{"data":[{"code":"DR-21-002-4R-B2-C0001","name":"21NPW","slug":"dr-21-002-4r-b2-c0001","description":"Sub-Woofer\/21inch\/Neo\/Paper\/1800W\/4ohm","url":"https:\/\/redcatt.net\/products\/dr-21-002-4r-b2-c0001","category":"LF","type":"Sub-woofer","size_inches":21,"is_featured":false,"general":{"nominal_impedance":"4","magnet":"Neodymium","basket_material":"Aluminum"},"power_handling":{"aes_watts":"1800","continuous_watts":"3600","peak_watts":"7200"},"voice_coil":{"diameter":"134.6","wire":"Copper","former":"Glass Fiber","winding_height":"33"},"thiele_small_parameters":{"fs_hz":35,"re_ohm":3,"qes":0.33,"qms":11.12,"qts":0.32,"vas_liters":149,"sd_cm2":1662,"sensitivity_db":96.32,"mms_grams":514,"rms":10.16,"cms":0.04,"bl_tm":32.9,"le_mh":1.14},"physical":{"overall_diameter_mm":546,"bolt_circle_diameter_mm":520,"baffle_cutout_diameter_mm":496,"mounting_holes":"8","depth_mm":245,"net_weight_kg":14.85,"xmax_mm":"9","xmech_mm":"24"},"materials":{"surround":"fabric","cone_dome":"Paper CF","spider":"Nomex"},"content":{"key_features":["5.3\u201d diameter voice coil","3600 watts program power handling","Triple silicone spider, heavy duty fiber reinforced cone with large surround"],"design_notes":"The 21NPW is a high efficiency, (96 dB 1watt \/ 1 meter) 21-inch woofer with incredibly linear frequency response characteristics, extreme high power handling capability while generating low harmonic distortion artifacts. The 21NPW uses a lightweight carbon fiber loaded cone assembly along with a high excursion triple roll constant geometry surround. This combination provides remarkable strength, high efficiency and a peak to peak maximum excursion of 31mm. \n\nPower Handling\nAt the core of the 21NPW is it\u2019s voice coil technology featuring a composite Polyimide former material capable of withstanding peak temperatures in excess of 350C, well beyond the thermal requirements of modern professional audio systems. The 21NPW delivers incredible performance. \n \nREDCATT has implemented a triple layer\/silicone spider design to ensure long term Fs memory, consistency and diminish anomalies associated with spider deterioration.","hero_text":null,"ai_summary":"The 21NPWX4-018 is a 21-inch professional sub-woofer driver rated at 1800 W AES (3600 W continuous) into a nominal 4-ohm impedance, designed for touring, large-venue installation, and high-SPL bass reinforcement systems requiring maximum output in the sub-bass frequency range. The driver delivers 96.32 dB sensitivity (1W\/1m), among the highest in its class for a 21-inch frame, and is built around a neodymium motor generating a Bl of 32.9 T.m  -  providing exceptionally tight cone control at high drive levels with reduced thermal compression over sustained operation.\n\nThe driver is rated for use with amplification of approx. 1800 W AES (3600 W continuous) into 4 ohms, with a high-pass filter recommended in the 24-35 Hz range depending on alignment. DSP processing with excursion limiting is essential at sustained high-power levels; below the tuning frequency, cone excursion increases rapidly and approaches the 9 mm Xmax before thermal limits are reached. Two drivers wired in parallel present a 2-ohm load; series wiring presents 8 ohms.\n\nThe 21NPWX4-018 is intended for professional touring sub arrays, stadium and large-venue ground stacks, club and nightclub subwoofer installations, concert infrastructure subwoofer systems, and fixed-install bass reinforcement in venues where the combination of high sensitivity, extreme power handling (Polyimide former rated to 350 degC), and maximum cone displacement define the required performance envelope.","recommended_enclosure":"Recommended enclosure alignments (bass reflex):\n- 125 liters tuned to 38 Hz: high output, strong mid-bass, reduced excursion; -3 dB approx. 35 Hz, HP filter 30 Hz\n- 150 liters tuned to 34 Hz: balanced response, general-purpose (recommended); -3 dB approx. 29 Hz, HP filter 24 Hz\n- 175 liters tuned to 29 Hz: extended low-frequency, requires HP filter protection; -3 dB approx. 25 Hz, HP filter 20 Hz"},"assets":{"photos":["https:\/\/redcatt.net\/storage\/products\/web\/DR-21-002-4R-B2-C0001-photo1.jpg","https:\/\/redcatt.net\/storage\/products\/web\/DR-21-002-4R-B2-C0001-photo2.jpg","https:\/\/redcatt.net\/storage\/products\/web\/DR-21-002-4R-B2-C0001-photo3.jpg"],"freq_response_image":"https:\/\/redcatt.net\/storage\/products\/web\/DR-21-002-4R-B2-C0001-freqResponseImpedance.jpg","drawing_2d_pdf":"https:\/\/redcatt.net\/storage\/products\/downloads\/DR-21-002-4R-B2-C0001-drawing2dPdf.pdf","drawing_2d_image":"https:\/\/redcatt.net\/storage\/products\/web\/DR-21-002-4R-B2-C0001-drawing2dJpg.jpg","step_3d":"https:\/\/redcatt.net\/storage\/products\/downloads\/DR-21-002-4R-B2-C0001-step3d.step"}},{"code":"DR-21-003-8R-B2-C0001","name":"21XR","slug":"dr-21-003-8r-b2-c0001","description":"Sub-Woofer\/21inch\/Neo\/Paper\/1500W\/8ohm","url":"https:\/\/redcatt.net\/products\/dr-21-003-8r-b2-c0001","category":"LF","type":"Sub-woofer","size_inches":21,"is_featured":false,"general":{"nominal_impedance":"8","magnet":"Neodymium","basket_material":"Aluminum"},"power_handling":{"aes_watts":"1800","continuous_watts":"3600","peak_watts":"7200"},"voice_coil":{"diameter":"134.6","wire":"Copper","former":"Glass Fiber","winding_height":"21"},"thiele_small_parameters":{"fs_hz":32.3,"re_ohm":4.5,"qes":0.51,"qms":16.79,"qts":0.5,"vas_liters":194.45,"sd_cm2":1662,"sensitivity_db":95.7,"mms_grams":488.58,"rms":5.9,"cms":0.05,"bl_tm":29.37,"le_mh":0.65},"physical":{"overall_diameter_mm":549,"bolt_circle_diameter_mm":525,"baffle_cutout_diameter_mm":503,"mounting_holes":"8","depth_mm":287,"net_weight_kg":23.8,"xmax_mm":"22.83","xmech_mm":"89.49"},"materials":{"surround":"fabric","cone_dome":"Paper CF","spider":"Nomex"},"content":{"key_features":["linear cone excursion 60mm peak TO peak !!","unparallel low distortion at low frequencies","patented design, innovative magnetic structure & venting system"],"design_notes":"The 21XR is a high efficiency, (96 dB 1watt \/ 1 meter) 21-inch woofer with incredibly linear frequency response characteristics. Our new and patented ground up motor design is a new approach to high-excursion woofers. The voice coil winding is always in the magnetic gap that is extremely wide. This feature ensures extremely low distortion across whole working range of this unique driver.  \n\nMotor Design\nThe magnetic design incorporates large neodymium magnets placed along the voice coil winding. This has allowed us to push the cone excursion to 50mm peak to peak. Unique gap venting ensures good air circulation and greatly improves the reliability of this driver. We have also developed a new technique for manufacturing deep copper caps that are implemented in this design and covering the whole voice coil movement.. \n \nThe design further utilizes triple, uncommonly large, spiders, spaced with spacers, hot-pressed tinsel wires onto the top spider, reinforced cone edge, reinforced surround to cone joint, reinforced spider to basket joints, etc.","hero_text":null,"ai_summary":"The 21XRX8-347A is a 21-inch high-output sub-woofer driver designed for professional subwoofer systems requiring high sensitivity (96 dB 1W\/1m) and controlled low-frequency behavior. The driver features a compliant suspension design suited to moderate-volume enclosures with extended low-frequency response.\n\nThe driver is intended for use with high-power amplification (approx. 1800 W AES \/ 3600 W continuous) and DSP control. A high-pass filter in the range of 20-29 Hz is recommended depending on enclosure tuning, along with proper limiting to manage thermal and mechanical stress. Typical operating bandwidth is 25-100 Hz, making it suitable for integration with mid-bass or full-range systems.\n\nThis design is particularly effective in single or multi-driver bass reflex systems used in touring, installation, and high-SPL applications, where consistent performance, durability, and output capability are critical.","recommended_enclosure":"Recommended enclosure alignments (bass reflex):\n- 105 liters tuned to 37 Hz: high output, strong mid-bass, reduced excursion; -3 dB approx. 34 Hz, HP filter 29 Hz\n- 120 liters tuned to 34 Hz: balanced response, general-purpose (recommended); -3 dB approx. 31 Hz, HP filter 24 Hz\n- 145 liters tuned to 31 Hz: extended low-frequency, requires HP filter protection; -3 dB approx. 26 Hz, HP filter 20 Hz"},"assets":{"photos":["https:\/\/redcatt.net\/storage\/products\/web\/DR-21-003-8R-B2-C0001-photo1.jpg","https:\/\/redcatt.net\/storage\/products\/web\/DR-21-003-8R-B2-C0001-photo2.jpg","https:\/\/redcatt.net\/storage\/products\/web\/DR-21-003-8R-B2-C0001-photo3.jpg","https:\/\/redcatt.net\/storage\/products\/web\/DR-21-003-8R-B2-C0001-photo4.jpg"],"freq_response_image":"https:\/\/redcatt.net\/storage\/products\/web\/DR-21-003-8R-B2-C0001-freqResponseImpedance.jpg","drawing_2d_pdf":"https:\/\/redcatt.net\/storage\/products\/downloads\/DR-21-003-8R-B2-C0001-drawing2dPdf.pdf","drawing_2d_image":"https:\/\/redcatt.net\/storage\/products\/web\/DR-21-003-8R-B2-C0001-drawing2dJpg.jpg","step_3d":"https:\/\/redcatt.net\/storage\/products\/downloads\/DR-21-003-8R-B2-C0001-step3d.step"}},{"code":"DR-18-001-4R-B2-C0001","name":"18XR","slug":"dr-18-001-4r-b2-c0001","description":"Woofer\/XR Woofer\/18inch\/Neo\/Paper\/1200W\/4ohm","url":"https:\/\/redcatt.net\/products\/dr-18-001-4r-b2-c0001","category":"LF","type":"Sub-woofer","size_inches":18,"is_featured":false,"general":{"nominal_impedance":"4","magnet":"Neodymium","basket_material":"Aluminum"},"power_handling":{"aes_watts":"1200","continuous_watts":"2400","peak_watts":"4800"},"voice_coil":{"diameter":"101.6","wire":"Copper","former":"Glass Fiber","winding_height":"22"},"thiele_small_parameters":{"fs_hz":21,"re_ohm":3.3,"qes":0.36,"qms":17,"qts":0.35,"vas_liters":300,"sd_cm2":1256.6,"sensitivity_db":92.07,"mms_grams":402,"rms":3.12,"cms":0.14,"bl_tm":22.2,"le_mh":0.54},"physical":{"overall_diameter_mm":467.6,"bolt_circle_diameter_mm":442,"baffle_cutout_diameter_mm":422,"mounting_holes":"8","depth_mm":257.2,"net_weight_kg":14.7,"xmax_mm":"17","xmech_mm":"36"},"materials":{"surround":"SBR","cone_dome":"Paper CF","spider":"Nomex"},"content":{"key_features":["Cone excursion 56mm !!                                                              Patented design.","1 demodulation copper ring, powerful and innovative motor structure, innovative venting system","Double spider with spacer, woven-in tinsel wires, optimized surround"],"design_notes":"The 18XR is a truly groundbreaking subwoofer. REDCATT team has spent countless hours creating something outstanding. Where the conventional sub-woofers stop performing due to the design limitations, the XR series just starts and shines. With huge excursion, high Bl, newly designed suspension system, we are giving you a product that will not limit you to achieve even your wildest sub-woofer dreams. \n\nMotor Design\nThe magnetic design incorporates large neodymium magnets placed along the voice coil winding. This has allowed us to push the cone excursion to 52mm peak to peak. Unique gap venting ensures good air circulation and greatly improves the reliability of this driver. We have also developed a new technique for manufacturing deep copper caps. \n \nThe design further utilizes two, uncommonly large, spiders, spaced apart with spacer, hot-pressed tinsel wires onto the top spider, reinforced cone. The suspension is designed for large excursions. Large lightweight surround sports resonant control features that we fully FEM designed and optimized to provide the best possible performance under large excursions.","hero_text":null,"ai_summary":"The 18XRX4-304B is an 18-inch sub-woofer and bass driver rated at 1200 W AES (2400 W continuous) into a nominal 4-ohm impedance, built around the patented XR (eXtended Range) radial neodymium motor system and featuring an exceptionally low free-air resonance of 21 Hz. Radial neodymium magnets are distributed along the full voice coil winding, maintaining the coil within the magnetic field through 17 mm of linear excursion (Xmax), eliminating the dominant source of harmonic distortion associated with coil overhang in conventional large-excursion drivers. A copper demodulation ring further reduces inductance to 0.54 mH, extending upper-frequency linearity and enabling clean crossover integration up to approximately 500 Hz. The double-spider suspension with spacer and FEM-optimised SBR rubber surround are engineered to provide consistent restoring force and constant cone geometry through the full excursion range.\n\nThe driver is rated for amplification of approx. 1200 W AES (2400 W continuous) into 4 ohms, with high-pass filtering in the 18-28 Hz range recommended for vented systems depending on tuning frequency. DSP control with excursion and thermal limiting is essential at sustained high-power operation. Sealed systems benefit from a Linkwitz Transform targeting fc = 21 Hz, Qtc = 0.707 to extend passive response to the infrasonic register, with the 17 mm Xmax providing sufficient mechanical headroom for the required bass correction.\n\nThe 18XRX4-304B is suited for a broad range of applications: professional touring sub arrays and large-venue PA systems, cinema LFE and screen-channel bass sections, large-format studio reference monitoring, high-end home cinema and audiophile listening room subwoofers, and high-power bass driver duty in large multi-way loudspeaker systems  -  anywhere that infrasonic-capable, low-distortion bass reproduction at sustained high output levels is required.","recommended_enclosure":"Recommended enclosure alignments (bass reflex):\n- 235 liters tuned to 24 Hz: high output, strong mid-bass, reduced excursion; -3 dB approx. 22 Hz, HP filter 25 Hz\n- 275 liters tuned to 21 Hz: balanced response, general-purpose (recommended); -3 dB approx. 19 Hz, HP filter 22 Hz\n- 275 liters tuned to 20 Hz: extended low-frequency, requires HP filter protection; -3 dB approx. 17 Hz, HP filter 20 Hz"},"assets":{"photos":["https:\/\/redcatt.net\/storage\/products\/web\/DR-18-001-4R-B2-C0001-photo1.png","https:\/\/redcatt.net\/storage\/products\/web\/DR-18-001-4R-B2-C0001-photo2.jpg","https:\/\/redcatt.net\/storage\/products\/web\/DR-18-001-4R-B2-C0001-photo3.jpg"],"freq_response_image":"https:\/\/redcatt.net\/storage\/products\/web\/DR-18-001-4R-B2-C0001-freqResponseImpedance.jpg","drawing_2d_pdf":"https:\/\/redcatt.net\/storage\/products\/downloads\/DR-18-001-4R-B2-C0001-drawing2dPdf.pdf","drawing_2d_image":"https:\/\/redcatt.net\/storage\/products\/web\/DR-18-001-4R-B2-C0001-drawing2dJpg.jpg","step_3d":"https:\/\/redcatt.net\/storage\/products\/downloads\/DR-18-001-4R-B2-C0001-step3d.step"}},{"code":"DR-18-003-8R-B2-C0001","name":"183FIND","slug":"dr-18-003-8r-b2-c0001","description":"Variant of DR-18-003","url":"https:\/\/redcatt.net\/products\/dr-18-003-8r-b2-c0001","category":"LF","type":"Woofer","size_inches":18,"is_featured":false,"general":{"nominal_impedance":"8","magnet":"Ferrite","basket_material":"Steel"},"power_handling":{"aes_watts":"600","continuous_watts":"1200","peak_watts":"2400"},"voice_coil":{"diameter":"76","wire":"Copper","former":"Glass Fiber","winding_height":"19.8"},"thiele_small_parameters":{"fs_hz":32,"re_ohm":5.9,"qes":0.43,"qms":13.2,"qts":0.42,"vas_liters":329.5,"sd_cm2":1225.4,"sensitivity_db":97.07,"mms_grams":165,"rms":2.51,"cms":0.15,"bl_tm":21.14,"le_mh":0.73},"physical":{"overall_diameter_mm":461,"bolt_circle_diameter_mm":442,"baffle_cutout_diameter_mm":422,"mounting_holes":"8","depth_mm":184,"net_weight_kg":8.8,"xmax_mm":"5.9","xmech_mm":"13.9"},"materials":{"surround":"fabric","cone_dome":"Paper GF","spider":"Conex"},"content":{"key_features":["Optimized ferrite magnetic structure","Lightweight, yet strong paper cone","Hi spl"],"design_notes":"183FIND is a cost-effective solution for subwoofers. Its lightweight yet strong cone allows the magnetic circuit to be size optimized while delivering a seizable amount of sound pressure. With its high efficiency (97 dB 1watt \/ 1 meter) and high power handling capabilities, this woofer will excel in all applications with tight budgets. The cone shape and material was developed to provide an optimum low-frequency response, making the woofer good choice for subwoofer systems.\u00a0\n\nPower Handling\nAt the core of the 183FIND is its voice coil technology featuring a composite Polyimide former material capable of withstanding peak temperatures above 280\u00b0C. The winding with high-temperature specification copper wire ensures the long life of the voice coil, without the costly service cycles.\u00a0\nThe cone is also extensively treated to withstand harsh environments and high humidity. Metal parts in the speaker assembly are coated for extreme weatherization protection.","hero_text":null,"ai_summary":"The 183FINDX8-297 is a 18-inch high-output mid-woofer driver designed for professional 2-way and multi-way systems requiring high sensitivity (97 dB 1W\/1m) and controlled low-frequency behavior. The driver uses a balanced motor-suspension design that provides good cone control while maintaining usable output across its operating bandwidth.\n\nThe driver is intended for use with high-power amplification (approx. 600 W AES \/ 1200 W continuous) and DSP control. A high-pass filter in the range of 20-29 Hz is recommended depending on enclosure tuning, along with proper limiting to manage thermal and mechanical stress. Typical operating bandwidth is 26-1500 Hz, covering bass through upper-mid frequencies for direct integration with a compression driver or tweeter in a two-way or multi-way system.\n\nThis design is particularly effective in single or multi-driver bass reflex systems used in professional two-way and multi-way PA systems, powered monitors, and compact bass-reflex enclosures, where extended bandwidth, controlled distortion across the full operating range, and versatile system integration are required.","recommended_enclosure":"Recommended enclosure alignments (bass reflex):\n- 215 liters tuned to 37 Hz: high output, strong mid-bass, reduced excursion; -3 dB approx. 34 Hz, HP filter 29 Hz\n- 250 liters tuned to 34 Hz: balanced response, general-purpose (recommended); -3 dB approx. 31 Hz, HP filter 24 Hz\n- 275 liters tuned to 30 Hz: extended low-frequency, requires HP filter protection; -3 dB approx. 26 Hz, HP filter 20 Hz"},"assets":{"photos":["https:\/\/redcatt.net\/storage\/products\/web\/DR-18-003-8R-B2-C0001-photo1.jpg","https:\/\/redcatt.net\/storage\/products\/web\/DR-18-003-8R-B2-C0001-photo2.jpg","https:\/\/redcatt.net\/storage\/products\/web\/DR-18-003-8R-B2-C0001-photo3.jpg","https:\/\/redcatt.net\/storage\/products\/web\/DR-18-003-8R-B2-C0001-photo4.jpg"],"freq_response_image":"https:\/\/redcatt.net\/storage\/products\/web\/DR-18-003-8R-B2-C0001-freqResponseImpedance.jpg","drawing_2d_pdf":"https:\/\/redcatt.net\/storage\/products\/downloads\/DR-18-003-8R-B2-C0001-drawing2dPdf.pdf","drawing_2d_image":"https:\/\/redcatt.net\/storage\/products\/web\/DR-18-003-8R-B2-C0001-drawing2dJpg.jpg","step_3d":"https:\/\/redcatt.net\/storage\/products\/downloads\/DR-18-003-8R-B2-C0001-step3d.step"}},{"code":"DR-18-004-8R-B2-C0001","name":"186FIND","slug":"dr-18-004-8r-b2-c0001","description":"Variant of DR-18-004","url":"https:\/\/redcatt.net\/products\/dr-18-004-8r-b2-c0001","category":"LF","type":"Woofer","size_inches":18,"is_featured":true,"general":{"nominal_impedance":"8","magnet":"Ferrite","basket_material":"Aluminum"},"power_handling":{"aes_watts":"1800","continuous_watts":"3600","peak_watts":"7200"},"voice_coil":{"diameter":"114.3","wire":"Copper","former":"Glass Fiber","winding_height":"31.8"},"thiele_small_parameters":{"fs_hz":33,"re_ohm":5.5,"qes":0.36,"qms":12.1,"qts":0.35,"vas_liters":174.2,"sd_cm2":1256,"sensitivity_db":96,"mms_grams":288,"rms":4.9,"cms":0.081,"bl_tm":30.2,"le_mh":1.51},"physical":{"overall_diameter_mm":468,"bolt_circle_diameter_mm":442,"baffle_cutout_diameter_mm":423,"mounting_holes":"8","depth_mm":212,"net_weight_kg":19.3,"xmax_mm":"8.4","xmech_mm":"23.4"},"materials":{"surround":"fabric","cone_dome":"Paper GF","spider":"Nomex"},"content":{"key_features":["4.5 inch high temperature voice coil","High Sound pressure level","Very high power handling"],"design_notes":"Introducing 186FIND, the powerhouse woofer designed for superior audio performance. With a staggering 3,600 watts of peak power and a 4.5\" voice coil that can withstand temperatures exceeding 350\u00b0C, this woofer is built to impress. Featuring a new paper pulp mixed with glass fibers, high excursion surround, and an extra large spider, it delivers unparalleled longevity and bass. The motor system's high grade ferrite magnet creates a strong symmetrical flux field, while the extended space below the voice coil allows for maximum excursion. Get ready to be blown away by the 186FIND woofer.","hero_text":null,"ai_summary":"The 186FINDX8-552A is a 18-inch high-output woofer driver designed for professional subwoofer systems requiring high sensitivity (96 dB 1W\/1m) and controlled low-frequency behavior. The motor and suspension are optimized to maintain consistent performance at high drive levels, with controlled excursion and reduced thermal compression during long-term operation.\n\nThe driver is intended for use with high-power amplification (approx. 1800 W AES \/ 3600 W continuous) and DSP control. A high-pass filter in the range of 20-29 Hz is recommended depending on enclosure tuning, along with proper limiting to manage thermal and mechanical stress. Typical operating bandwidth is 25-100 Hz, making it suitable for integration with mid-bass or full-range systems.\n\nThis design is particularly effective in single or multi-driver bass reflex systems used in touring, installation, and high-SPL applications, where consistent performance, durability, and output capability are critical.","recommended_enclosure":"Recommended enclosure alignments (bass reflex):\n- 135 liters tuned to 37 Hz: high output, strong mid-bass, reduced excursion; -3 dB approx. 34 Hz, HP filter 29 Hz\n- 160 liters tuned to 33 Hz: balanced response, general-purpose (recommended); -3 dB approx. 30 Hz, HP filter 23 Hz\n- 190 liters tuned to 29 Hz: extended low-frequency, requires HP filter protection; -3 dB approx. 25 Hz, HP filter 20 Hz"},"assets":{"photos":["https:\/\/redcatt.net\/storage\/products\/web\/DR-18-004-8R-B2-C0001-photo1.jpg","https:\/\/redcatt.net\/storage\/products\/web\/DR-18-004-8R-B2-C0001-photo2.jpg","https:\/\/redcatt.net\/storage\/products\/web\/DR-18-004-8R-B2-C0001-photo3.jpg","https:\/\/redcatt.net\/storage\/products\/web\/DR-18-004-8R-B2-C0001-photo4.jpg","https:\/\/redcatt.net\/storage\/products\/web\/DR-18-004-8R-B2-C0001-photo5.png"],"freq_response_image":"https:\/\/redcatt.net\/storage\/products\/web\/DR-18-004-8R-B2-C0001-freqResponseImpedance.jpg","drawing_2d_pdf":"https:\/\/redcatt.net\/storage\/products\/downloads\/DR-18-004-8R-B2-C0001-drawing2dPdf.pdf","drawing_2d_image":"https:\/\/redcatt.net\/storage\/products\/web\/DR-18-004-8R-B2-C0001-drawing2dJpg.jpg","step_3d":"https:\/\/redcatt.net\/storage\/products\/downloads\/DR-18-004-8R-B2-C0001-step3d.step"}},{"code":"DR-18-005-8R-B2-C0001","name":"182FIND","slug":"dr-18-005-8r-b2-c0001","description":"Variant of DR-18-005","url":"https:\/\/redcatt.net\/products\/dr-18-005-8r-b2-c0001","category":"LF","type":"Woofer","size_inches":18,"is_featured":false,"general":{"nominal_impedance":"8","magnet":"Ferrite","basket_material":"Aluminum"},"power_handling":{"aes_watts":"1000","continuous_watts":"2000","peak_watts":"4000"},"voice_coil":{"diameter":"101.6","wire":"Copper","former":"Glass Fiber","winding_height":"25.5"},"thiele_small_parameters":{"fs_hz":31,"re_ohm":5.5,"qes":0.24,"qms":8.85,"qts":0.23,"vas_liters":208.6,"sd_cm2":1257,"sensitivity_db":97.78,"mms_grams":281,"rms":6.18,"cms":0.093,"bl_tm":35.4,"le_mh":4.92},"physical":{"overall_diameter_mm":468,"bolt_circle_diameter_mm":442,"baffle_cutout_diameter_mm":426,"mounting_holes":"8","depth_mm":189,"net_weight_kg":14,"xmax_mm":"5.75","xmech_mm":"19.75"},"materials":{"surround":"fabric","cone_dome":"Paper GF","spider":"Nomex"},"content":{"key_features":["Inside \/ outside wound coil","Reinforced half pressed cone","Silicone nomex spider"],"design_notes":"The 182FIND is a high efficiency, (98 dB 1watt \/ 1 meter) 18-inch woofer with extended linear frequency response characteristics. The 182FIND uses durable half-pressed paper cone assembly along with a high excursion triple roll constant geometry surround. This combination provides remarkable strength at any given situation, high efficiency and a peak to peak maximum excursion of 27mm. \n\nPower Handling\nAt the core of the 182FIND is it\u2019s voice coil technology featuring a composite Polyimide former material capable of withstanding peak temperatures in excess of 250C, well beyond the thermal requirements of modern professional audio systems. Voice coil winding is wound inside and outside of the former in the 1-3 split.\n\nREDCATT has implemented a silicone spider design to ensure long term shape memory, consistency and diminish anomalies associated with spider deterioration.","hero_text":null,"ai_summary":"The 182FINDX8-127 is an 18-inch professional ferrite woofer designed for high-SPL touring PA, installed sound, and cinema LF applications requiring maximum motor force and deep bass extension from an 8-ohm ferrite motor system. The driver's most distinctive design feature is its inside\/outside wound voice coil (\"1-3 split\"), in which copper winding is applied to both the inner and outer surfaces of the 101.6 mm Polyimide former  -  a construction technique that doubles the effective conductor length in the magnetic gap and produces a Bl of 35.4 T.m, the highest motor force figure in the REDCATT ferrite woofer product range. The former is rated to 250 degC, and the dual-surface winding improves thermal dissipation by radiating heat from both coil faces simultaneously, contributing to the 1000 W AES and 2000 W continuous power handling. The resulting Qts of 0.23 places the 182FIND firmly in the extreme-motor-force professional woofer class. The trade-off of the inside\/outside winding geometry is an elevated voice coil inductance of Le=4.92 mH, which produces inductive rolloff onset at approximately 178 Hz; system designers should apply a low-pass crossover below 500 Hz in two-way configurations, or implement a 2.5-way or 3-way topology crossing the 182FIND to a midrange driver at 250-400 Hz for the cleanest programme integration. The reinforced half-pressed paper cone provides structural rigidity at the large Sd of 1257 cm2, and the silicone-impregnated Nomex spider is designed for long-term shape memory to maintain consistent Fs over the installation service life. The ferrite motor assembly accounts for the 14 kg net weight  -  higher than neodymium equivalents  -  while delivering motor performance that equals or exceeds the most demanding neodymium pro woofer designs.\n\nThe 182FINDX8-127 requires professional high-power amplification of 1000-2000 W into 8 ohms with DSP control mandatory for all alignments. A 24 dB\/octave high-pass filter at 38, 30, or 25 Hz depending on alignment is required to protect the driver below tuning, where cone excursion is unconstrained; displacement-limiting DSP protection is strongly recommended at full programme power given the gap between Fs=31 Hz and the low HP filter frequency in the extended alignments. For two-way integration, a passive RC Zobel network (R=5.5 ohm, Capprox.162 uF) across the voice coil terminals will partially compensate the Le-induced impedance rise through the crossover region and should be considered in all passive crossover designs. DSP active systems should apply Le-compensation EQ above 200 Hz if the crossover frequency exceeds 400 Hz.\n\nThe 182FINDX8-127 is suited for: compact and standard touring PA bass enclosures requiring top-tier motor force from a ferrite 18-inch driver; installed main LF speakers for theatres, houses of worship, stadia, and outdoor arenas; cinema main LF speaker assemblies requiring programme-consistent deep bass reproduction; 3-way professional PA systems using the 182FIND as the bass section with crossover at 250-400 Hz to a midrange driver; and high-SPL festival and touring club sound systems where the weight premium of ferrite over neodymium is acceptable in exchange for the cost advantage and Bl=35.4 T.m motor performance. Its inside\/outside wound coil technology, reinforced half-pressed cone, and silicone Nomex spider make it a distinctive ferrite-motor option in the REDCATT 18-inch professional woofer portfolio for applications where maximum motor force per unit cost is the primary specification driver.","recommended_enclosure":"Recommended enclosure alignments (bass reflex):\n- 250 liters tuned to 29 Hz: high output, strong mid-bass, reduced excursion; -3 dB approx. 25 Hz, HP filter 25 Hz\n- 275 liters tuned to 26 Hz: balanced response, general-purpose (recommended); -3 dB approx. 22 Hz, HP filter 22 Hz\n- 275 liters tuned to 25 Hz: extended low-frequency, requires HP filter protection; -3 dB approx. 21 Hz, HP filter 20 Hz"},"assets":{"photos":["https:\/\/redcatt.net\/storage\/products\/web\/DR-18-005-8R-B2-C0001-photo1.jpg","https:\/\/redcatt.net\/storage\/products\/web\/DR-18-005-8R-B2-C0001-photo2.jpg","https:\/\/redcatt.net\/storage\/products\/web\/DR-18-005-8R-B2-C0001-photo3.jpg"],"freq_response_image":"https:\/\/redcatt.net\/storage\/products\/web\/DR-18-005-8R-B2-C0001-freqResponseImpedance.jpg","drawing_2d_pdf":"https:\/\/redcatt.net\/storage\/products\/downloads\/DR-18-005-8R-B2-C0001-drawing2dPdf.pdf","drawing_2d_image":"https:\/\/redcatt.net\/storage\/products\/web\/DR-18-005-8R-B2-C0001-drawing2dJpg.jpg","step_3d":"https:\/\/redcatt.net\/storage\/products\/downloads\/DR-18-005-8R-B2-C0001-step3d.step"}},{"code":"DR-18-006-4R-B2-C0001","name":"181NPW","slug":"dr-18-006-4r-b2-c0001","description":"Woofer\/18inch\/Neo\/Paper\/1500W\/4ohm","url":"https:\/\/redcatt.net\/products\/dr-18-006-4r-b2-c0001","category":"LF","type":"Sub-woofer","size_inches":18,"is_featured":false,"general":{"nominal_impedance":"4","magnet":"Neodymium","basket_material":"Aluminum"},"power_handling":{"aes_watts":"1500","continuous_watts":"3000","peak_watts":"6000"},"voice_coil":{"diameter":"134.6","wire":"Copper","former":"Glass Fiber","winding_height":"32.8"},"thiele_small_parameters":{"fs_hz":28,"re_ohm":3.2,"qes":0.25,"qms":15.8,"qts":0.25,"vas_liters":167.7,"sd_cm2":1225.4,"sensitivity_db":94.8,"mms_grams":391.2,"rms":4.35,"cms":0.08,"bl_tm":29.7,"le_mh":1.76},"physical":{"overall_diameter_mm":468,"bolt_circle_diameter_mm":442,"baffle_cutout_diameter_mm":426,"mounting_holes":"8","depth_mm":210,"net_weight_kg":13.9,"xmax_mm":"8.9","xmech_mm":"23.9"},"materials":{"surround":"fabric","cone_dome":"Paper CF","spider":"Nomex"},"content":{"key_features":["5.3\u201d diameter voice coil, high power handling","Improved coil and magnet air-ventilation system, high temp. Capable voice coil winding","Carbon fiber reinforced paper cone, triple silicone spider"],"design_notes":"The 181NPW is a high efficiency, (95 dB 1watt \/ 1 meter) 18-inch woofer with incredibly linear frequency response characteristics, extreme high power handling capability while generating low harmonic distortion artifacts. The 181NPW uses a lightweight carbon fiber loaded cone assembly along with a high excursion triple roll constant geometry surround. This combination provides remarkable strength, high efficiency and a peak to peak maximum excursion of 30.5mm. \n\nPower Handling\nAt the core of the 181NPW is it\u2019s voice coil technology featuring a composite Polyimide former material capable of withstanding peak temperatures in excess of 350C, well beyond the thermal requirements of modern professional audio systems. The 181NPW delivers incredible performance. \n \nREDCATT has implemented a triple layer\/silicone spider design to ensure long term shape memory, consistency and diminish anomalies associated with spider deterioration.","hero_text":null,"ai_summary":"The 181NPWX4-099 is an 18-inch professional woofer and sub-woofer driver rated at 1500 W AES (3000 W continuous) into a nominal 4-ohm impedance, designed for touring, large-venue installation, and high-SPL bass reinforcement systems. The driver features a 5.3-inch (134.6 mm) voice coil wound on a Polyimide composite former rated to 350 degC, enabling sustained operation at continuous power levels that would thermally compromise standard glass fiber or paper formers. The motor-suspension design is optimized to maintain consistent performance at high drive levels, with controlled excursion and reduced thermal compression during long-term operation.\n\nThe driver is intended for use with high-power amplification of approx. 1500 W AES (3000 W continuous) into 4 ohms, with a recommended high-pass filter in the 24-35 Hz range depending on alignment. DSP control with excursion limiting and thermal protection is essential at sustained drive levels near the continuous rating. The 4-ohm impedance is suited to high-current solid-state amplification in direct or bridged configurations; parallel wiring of two drivers presents a 2-ohm load for compatible amplifiers.\n\nThe 181NPWX4-099 is intended for single and multi-driver bass reflex enclosures in professional touring and fixed installation applications, including concert sub arrays, club and venue subwoofer systems, cinema low-frequency systems, and large-format PA bass sections where the combination of high sensitivity (94.8 dB), extreme power handling, and very low Qts motor control define the performance envelope.","recommended_enclosure":"Recommended enclosure alignments (bass reflex):\n- 200 liters tuned to 26 Hz: high output, strong mid-bass, reduced excursion; -3 dB approx. 22 Hz, HP filter 25 Hz\n- 235 liters tuned to 23 Hz: balanced response, general-purpose (recommended); -3 dB approx. 20 Hz, HP filter 22 Hz\n- 275 liters tuned to 20 Hz: extended low-frequency, requires HP filter protection; -3 dB approx. 17 Hz, HP filter 20 Hz"},"assets":{"photos":["https:\/\/redcatt.net\/storage\/products\/web\/DR-18-006-4R-B2-C0001-photo1.jpg","https:\/\/redcatt.net\/storage\/products\/web\/DR-18-006-4R-B2-C0001-photo2.jpg","https:\/\/redcatt.net\/storage\/products\/web\/DR-18-006-4R-B2-C0001-photo3.jpg","https:\/\/redcatt.net\/storage\/products\/web\/DR-18-006-4R-B2-C0001-photo4.jpg"],"freq_response_image":"https:\/\/redcatt.net\/storage\/products\/web\/DR-18-006-4R-B2-C0001-freqResponseImpedance.jpg","drawing_2d_pdf":"https:\/\/redcatt.net\/storage\/products\/downloads\/DR-18-006-4R-B2-C0001-drawing2dPdf.pdf","drawing_2d_image":"https:\/\/redcatt.net\/storage\/products\/web\/DR-18-006-4R-B2-C0001-drawing2dJpg.jpg","step_3d":"https:\/\/redcatt.net\/storage\/products\/downloads\/DR-18-006-4R-B2-C0001-step3d.step"}},{"code":"DR-18-007-4R-B2-C0001","name":"181XR","slug":"dr-18-007-4r-b2-c0001","description":"XR Woofer\/18inch\/Neo\/Paper\/1200W\/4ohm","url":"https:\/\/redcatt.net\/products\/dr-18-007-4r-b2-c0001","category":"LF","type":"Woofer","size_inches":18,"is_featured":true,"general":{"nominal_impedance":"4","magnet":"Neodymium","basket_material":"Aluminum"},"power_handling":{"aes_watts":"1200","continuous_watts":"2400","peak_watts":"4800"},"voice_coil":{"diameter":"101.6","wire":"Copper","former":"Glass Fiber","winding_height":"22"},"thiele_small_parameters":{"fs_hz":30,"re_ohm":3.3,"qes":0.24,"qms":13.2,"qts":0.23,"vas_liters":195,"sd_cm2":1256.6,"sensitivity_db":96.54,"mms_grams":306,"rms":4.37,"cms":0.09,"bl_tm":28.3,"le_mh":1.3},"physical":{"overall_diameter_mm":467.6,"bolt_circle_diameter_mm":442,"baffle_cutout_diameter_mm":422,"mounting_holes":"8","depth_mm":257.2,"net_weight_kg":14.5,"xmax_mm":"17","xmech_mm":"36"},"materials":{"surround":"fabric","cone_dome":"Paper GF","spider":"Nomex"},"content":{"key_features":["Cone excursion 56mm !!                                                              Patented design.","1 demodulation copper ring, powerful and innovative motor structure, innovative venting system","Double spider with spacer, woven-in tinsel wires, reinforced cone edge."],"design_notes":"Designed based upon the 18XR, the 181XR was designed for professional audio segment.\nThe basic characters and design concept remains the same for the 181XR. We have used newly designed 4 roll waterproof fabric surround that fully supports the high cone excursions of this incredible loudspeaker. The target was to push the envelope of possibilities. We are giving you a product that will not limit you to achieve even your wildest sub-woofer dreams. \n\nMotor Design\nThe magnetic design incorporates large neodymium magnets placed along the voice coil winding. This has allowed us to push the cone excursion to 44mm peak to peak. Unique gap venting ensures good air circulation and greatly improves the reliability of this driver. We have also developed a new technique for manufacturing deep copper caps. \n \nThe design further utilizes dual, uncommonly large, spiders, spaced with spacer, hot-pressed tinsel wires onto the top spider, reinforced cone edge, reinforced surround to cone joint, reinforced spider to basket joints, etc.","hero_text":null,"ai_summary":"The 181XRX4-350 is a 18-inch high-output sub-woofer driver designed for professional subwoofer systems requiring high sensitivity (97 dB 1W\/1m) and controlled low-frequency behavior. The motor and suspension are optimized to maintain consistent performance at high drive levels, with controlled excursion and reduced thermal compression during long-term operation.\n\nThe driver is intended for use with high-power amplification (approx. 1200 W AES \/ 2400 W continuous) and DSP control. A high-pass filter in the range of 20-25 Hz is recommended depending on enclosure tuning, along with proper limiting to manage thermal and mechanical stress. Typical operating bandwidth is 20-100 Hz, making it suitable for integration with mid-bass or full-range systems.\n\nThis design is particularly effective in single or multi-driver bass reflex systems used in touring, installation, and high-SPL applications, where consistent performance, durability, and output capability are critical.","recommended_enclosure":"Recommended enclosure alignments (bass reflex):\n- 230 liters tuned to 28 Hz: high output, strong mid-bass, reduced excursion; -3 dB approx. 24 Hz, HP filter 25 Hz\n- 275 liters tuned to 25 Hz: balanced response, general-purpose (recommended); -3 dB approx. 21 Hz, HP filter 22 Hz\n- 275 liters tuned to 23 Hz: extended low-frequency, requires HP filter protection; -3 dB approx. 20 Hz, HP filter 20 Hz"},"assets":{"photos":["https:\/\/redcatt.net\/storage\/products\/web\/DR-18-007-4R-B2-C0001-photo1.jpg","https:\/\/redcatt.net\/storage\/products\/web\/DR-18-007-4R-B2-C0001-photo2.jpg","https:\/\/redcatt.net\/storage\/products\/web\/DR-18-007-4R-B2-C0001-photo3.jpg","https:\/\/redcatt.net\/storage\/products\/web\/DR-18-007-4R-B2-C0001-photo4.jpg"],"freq_response_image":"https:\/\/redcatt.net\/storage\/products\/web\/DR-18-007-4R-B2-C0001-freqResponseImpedance.jpg","drawing_2d_pdf":"https:\/\/redcatt.net\/storage\/products\/downloads\/DR-18-007-4R-B2-C0001-drawing2dPdf.pdf","drawing_2d_image":"https:\/\/redcatt.net\/storage\/products\/web\/DR-18-007-4R-B2-C0001-drawing2dJpg.jpg","step_3d":"https:\/\/redcatt.net\/storage\/products\/downloads\/DR-18-007-4R-B2-C0001-step3d.step"}},{"code":"DR-18-014-8R-B2-C0001","name":"18FIND","slug":"dr-18-014-8r-b2-c0001","description":"Woofer\/18inch\/Ferrite\/Paper\/1000W\/8ohm","url":"https:\/\/redcatt.net\/products\/dr-18-014-8r-b2-c0001","category":"LF","type":"Woofer","size_inches":18,"is_featured":false,"general":{"nominal_impedance":"8","magnet":"Ferrite","basket_material":"Aluminum"},"power_handling":{"aes_watts":"1000","continuous_watts":"2000","peak_watts":"4000"},"voice_coil":{"diameter":"101.6","wire":"Copper","former":"Glass Fiber","winding_height":"23.7"},"thiele_small_parameters":{"fs_hz":36,"re_ohm":5.2,"qes":0.44,"qms":8.4,"qts":0.42,"vas_liters":203.4,"sd_cm2":1257,"sensitivity_db":97.24,"mms_grams":211.8,"rms":5.7,"cms":0.09,"bl_tm":23.6,"le_mh":1.74},"physical":{"overall_diameter_mm":468,"bolt_circle_diameter_mm":442,"baffle_cutout_diameter_mm":426,"mounting_holes":"8","depth_mm":184,"net_weight_kg":13.7,"xmax_mm":"5.85","xmech_mm":"17.85"},"materials":{"surround":"fabric","cone_dome":"Paper CF","spider":"Nomex"},"content":{"key_features":["EXTENDED FREQUENCY RESPONSE","Optimized venting system","High power handling"],"design_notes":"The 18FIND is a high efficiency, (97 dB 1watt \/ 1 meter) 18-inch woofer with incredibly linear frequency response characteristics, high power handling capability while generating low harmonic distortion artifacts. The 18FIND uses a lightweight glass fiber loaded cone assembly along with a high excursion triple roll constant geometry surround. This combination provides remarkable strength, high efficiency and a peak to peak maximum excursion of 21mm. \n\nPower Handling\nAt the core of the 18FIND is it\u2019s voice coil technology featuring a composite Polyimide former material capable of withstanding peak temperatures in excess of 250C, well beyond the thermal requirements of modern professional audio systems. \n \nREDCATT has implemented a silicone spider design to ensure long term shape memory, consistency and diminish anomalies associated with spider deterioration.","hero_text":null,"ai_summary":"The 18FINDX8-036 is an 18-inch high-efficiency professional woofer rated at 1,000 W AES (2,000 W continuous) into a nominal 8-ohm load. Sensitivity is 97.24 dB (1 W\/1 m), placing it among the highest-efficiency 18-inch drivers in the REDCATT range. The Qts of 0.42 reflects a balanced motor-suspension design that provides good cone control while maintaining usable output across its operating bandwidth, with vented enclosures strongly preferred for PA subwoofer applications. The 101.6 mm (4-inch) voice coil on a glass fiber former with copper windings and Polyimide insulation (250  degC rated) delivers the thermal headroom required for sustained 2,000 W continuous operation. The carbon fiber loaded paper cone and fabric triple-roll constant geometry surround ensure high mechanical stability throughout the rated Xmax of 5.85 mm (one-way linear). An optimized motor venting system provides effective thermal management during extended high-power use.\n\nThe driver is rated for approximately 1,000 W AES (2,000 W continuous) and requires high-power professional amplification. A high-pass filter in the 26-38 Hz range (24 dB\/octave Linkwitz-Riley) is recommended depending on enclosure tuning, with excursion limiting below the port tuning frequency. Typical operating bandwidth is 28-120 Hz in professional PA subwoofer applications. DSP crossover management, peak limiting, and thermal protection are required for sustained high-power touring and installation use.\n\nThe 18FINDX8-036 is suited for touring PA subwoofers, fixed-installation bass cabinets, high-SPL single and multi-driver bass reflex enclosures, and outdoor sound systems requiring weather-resistant construction. The aluminum basket, silicone spider treatment, and optimized venting system provide long-term mechanical reliability under continuous professional use. The 8-ohm nominal impedance enables flexible wiring configurations for multi-driver subwoofer arrays.","recommended_enclosure":"Recommended enclosure alignments (bass reflex):\n- 130 liters tuned to 41 Hz: high output, strong mid-bass, reduced excursion; -3 dB approx. 38 Hz, HP filter 33 Hz\n- 155 liters tuned to 38 Hz: balanced response, general-purpose (recommended); -3 dB approx. 35 Hz, HP filter 28 Hz\n- 180 liters tuned to 34 Hz: extended low-frequency, requires HP filter protection; -3 dB approx. 29 Hz, HP filter 22 Hz"},"assets":{"photos":["https:\/\/redcatt.net\/storage\/products\/web\/DR-18-014-8R-B2-C0001-photo1.jpg","https:\/\/redcatt.net\/storage\/products\/web\/DR-18-014-8R-B2-C0001-photo2.jpg","https:\/\/redcatt.net\/storage\/products\/web\/DR-18-014-8R-B2-C0001-photo3.jpg","https:\/\/redcatt.net\/storage\/products\/web\/DR-18-014-8R-B2-C0001-photo4.jpg"],"freq_response_image":"https:\/\/redcatt.net\/storage\/products\/web\/DR-18-014-8R-B2-C0001-freqResponseImpedance.jpg","drawing_2d_pdf":"https:\/\/redcatt.net\/storage\/products\/downloads\/DR-18-014-8R-B2-C0001-drawing2dPdf.pdf","drawing_2d_image":"https:\/\/redcatt.net\/storage\/products\/web\/DR-18-014-8R-B2-C0001-drawing2dJpg.jpg","step_3d":"https:\/\/redcatt.net\/storage\/products\/downloads\/DR-18-014-8R-B2-C0001-step3d.step"}},{"code":"DR-18-015-8R-B2-C0001","name":"18FIND","slug":"dr-18-015-8r-b2-c0001","description":"Woofer\/18inch\/Ferrite\/Paper\/1000W\/8ohm","url":"https:\/\/redcatt.net\/products\/dr-18-015-8r-b2-c0001","category":"LF","type":"Woofer","size_inches":18,"is_featured":false,"general":{"nominal_impedance":"8","magnet":"Ferrite","basket_material":"Aluminum"},"power_handling":{"aes_watts":"1000","continuous_watts":"2000","peak_watts":"4000"},"voice_coil":{"diameter":"101.6","wire":"Copper","former":"Glass Fiber","winding_height":"23.7"},"thiele_small_parameters":{"fs_hz":34,"re_ohm":5.1,"qes":0.49,"qms":7.95,"qts":0.46,"vas_liters":221,"sd_cm2":1207,"sensitivity_db":96.33,"mms_grams":203.8,"rms":5.5,"cms":0.1,"bl_tm":21.3,"le_mh":1.4},"physical":{"overall_diameter_mm":468,"bolt_circle_diameter_mm":442,"baffle_cutout_diameter_mm":426,"mounting_holes":"8","depth_mm":183.5,"net_weight_kg":13.5,"xmax_mm":"5.85","xmech_mm":"17.85"},"materials":{"surround":"fabric","cone_dome":"Paper CF","spider":"Nomex"},"content":{"key_features":["EXTENDED LF FREQUENCY RESPONSE","Optimized venting system","Very wide B field"],"design_notes":"The 18FIND is a high efficiency, (97 dB 1watt \/ 1 meter) 18-inch woofer with incredibly linear frequency response characteristics, high power handling capability while generating low harmonic distortion artifacts. The 18FIND uses a lightweight glass fiber loaded cone assembly along with a high excursion triple roll constant geometry surround. This combination provides remarkable strength, high efficiency and a peak to peak maximum excursion of 30mm. \n\nPower Handling\nAt the core of the 18FIND is it\u2019s voice coil technology featuring a composite Polyimide former material capable of withstanding peak temperatures in excess of 250C, well beyond the thermal requirements of modern professional audio systems. \n \nREDCATT has implemented a silicone spider design to ensure long term shape memory, consistency and diminish anomalies associated with spider deterioration.","hero_text":null,"ai_summary":"The 18FINDX8-310B is an 18-inch professional ferrite woofer designed for high-SPL touring PA, installed sound reinforcement, and cinema LF applications where low harmonic distortion at large cone excursion, deep bass extension, and broad two-way system compatibility are the primary design requirements. The driver uses a 101.6 mm copper voice coil wound on a Polyimide former rated to 250 degC, delivering 1000 W AES and 2000 W continuous at 8 ohms. The motor system is designed around a wide magnetic field geometry  -  the -310B's defining engineering characteristic  -  in which the magnetic gap is dimensioned to maintain a more uniform Bl product across the full Xmax travel of 5.85 mm. This wide-field approach produces measurably lower BL(x) nonlinearity at large excursion compared to shorter-gap designs of similar peak Bl, resulting in reduced second and third harmonic distortion at sustained programme levels. The resulting Bl of 21.3 T.m at Qts=0.46 represents a deliberate optimization toward linearity rather than maximum motor force. The voice coil inductance of Le=1.40 mH is the lowest in the 18FIND product family, with an inductive rolloff onset at approximately 580 Hz  -  the best native HF bandwidth of the three variants  -  making the -310B directly compatible with standard two-way crossover designs at 800 Hz to 1.5 kHz without Le compensation or modified crossover topology. The silicone-impregnated Nomex spider ensures long-term Fs consistency, and the optimized aluminum basket venting reduces thermal resistance for sustained high-power operation.\n\nThe 18FINDX8-310B requires professional high-power amplification of 1000-2000 W into 8 ohms with DSP signal management mandatory for all alignments. A 24 dB\/octave high-pass filter at 40, 33, or 26 Hz depending on alignment is required to prevent excursion overshoot below the vented tuning frequency; displacement-limiting DSP is recommended for all sustained full-programme operation. The operating bandwidth is approximately 34 Hz to 1.5 kHz; a 24 dB\/octave low-pass crossover to a compression driver at 800 Hz-1.5 kHz is appropriate for standard two-way integration, with no additional Le compensation needed.\n\nThe 18FINDX8-310B is suited for: two-way touring PA enclosures in standard and large formats where reduced harmonic distortion at high programme levels is valued alongside high SPL capability; installed main LF speakers for theatres, cinema, houses of worship, stadia, and large outdoor venues requiring extended bass reproduction with low distortion at sustained power; high-fidelity and critical listening PA systems where the -310B's wide-field BL(x) linearity produces a perceptibly cleaner bass character compared to shorter-gap designs; and festival and outdoor event main bass cabinets in standard and extended LF configurations. Within the REDCATT 18-inch ferrite woofer family, the -310B is the appropriate selection when low distortion at Xmax, deep bass extension to 34 Hz, and unconstrained two-way system integration are the primary performance priorities, with the -036 preferred for higher sensitivity and smaller enclosure requirements, and the 182FIND for maximum motor force in 3-way topologies.","recommended_enclosure":"Recommended enclosure alignments (bass reflex):\n- 130 liters tuned to 39 Hz: high output, strong mid-bass, reduced excursion; -3 dB approx. 36 Hz, HP filter 31 Hz\n- 150 liters tuned to 36 Hz: balanced response, general-purpose (recommended); -3 dB approx. 33 Hz, HP filter 26 Hz\n- 180 liters tuned to 32 Hz: extended low-frequency, requires HP filter protection; -3 dB approx. 27 Hz, HP filter 20 Hz"},"assets":{"photos":["https:\/\/redcatt.net\/storage\/products\/web\/DR-18-015-8R-B2-C0001-photo1.jpg","https:\/\/redcatt.net\/storage\/products\/web\/DR-18-015-8R-B2-C0001-photo2.jpg","https:\/\/redcatt.net\/storage\/products\/web\/DR-18-015-8R-B2-C0001-photo3.jpg"],"freq_response_image":"https:\/\/redcatt.net\/storage\/products\/web\/DR-18-015-8R-B2-C0001-freqResponseImpedance.jpg","drawing_2d_pdf":"https:\/\/redcatt.net\/storage\/products\/downloads\/DR-18-015-8R-B2-C0001-drawing2dPdf.pdf","drawing_2d_image":"https:\/\/redcatt.net\/storage\/products\/web\/DR-18-015-8R-B2-C0001-drawing2dJpg.jpg","step_3d":"https:\/\/redcatt.net\/storage\/products\/downloads\/DR-18-015-8R-B2-C0001-step3d.step"}},{"code":"DR-18-019-8R-B2-C0001","name":"18NPW","slug":"dr-18-019-8r-b2-c0001","description":"Woofer\/18inch\/Neo\/Paper\/1200W\/8ohm","url":"https:\/\/redcatt.net\/products\/dr-18-019-8r-b2-c0001","category":"LF","type":"Woofer","size_inches":18,"is_featured":false,"general":{"nominal_impedance":"8","magnet":"Neodymium","basket_material":"Aluminum"},"power_handling":{"aes_watts":"1200","continuous_watts":"2400","peak_watts":"4800"},"voice_coil":{"diameter":"101.6","wire":"Copper","former":"Glass Fiber","winding_height":"23.7"},"thiele_small_parameters":{"fs_hz":36,"re_ohm":5.1,"qes":0.28,"qms":8.39,"qts":0.278,"vas_liters":211.5,"sd_cm2":1257,"sensitivity_db":99.14,"mms_grams":199.4,"rms":5.4,"cms":0.1,"bl_tm":27.3,"le_mh":1.51},"physical":{"overall_diameter_mm":468,"bolt_circle_diameter_mm":442,"baffle_cutout_diameter_mm":426,"mounting_holes":"8","depth_mm":189,"net_weight_kg":9.4,"xmax_mm":"4.85","xmech_mm":"18.85"},"materials":{"surround":"fabric","cone_dome":"Paper CF","spider":"Nomex"},"content":{"key_features":["Strong glass fiber loaded cone","High temperature voice coil, double layer silicone spider","High power handling"],"design_notes":"The 18NPW is a high efficiency, (99 dB 1watt \/ 1 meter) 18-inch woofer with incredibly linear frequency response characteristics, extreme high power handling capability while generating low harmonic distortion artifacts. The 18NPW uses a lightweight, but strong, glass fiber loaded cone assembly along with a high excursion triple roll constant geometry surround. This combination provides remarkable strength, high efficiency and a peak to peak maximum excursion of 21.5mm. \n\nPower Handling\nAt the core of the 18NPW is it\u2019s voice coil technology featuring a composite Polyimide former material capable of withstanding peak temperatures in excess of 350\u00b0C, well beyond the thermal requirements of modern professional audio systems. The 18NPW delivers incredible performance. \n \nREDCATT has implemented a double layer\/silicone spider design to ensure long term Fs memory, consistency and diminish anomalies associated with spider deterioration. The sealed spider works as a air pump and pushes the air trough out motor to increase heat transfer and cooling of the parts.","hero_text":null,"ai_summary":"The 18NPWX8-017 is a 18-inch high-output woofer driver designed for professional subwoofer systems where high efficiency (99 dB 1W\/1m) and maximum acoustic output are required. The motor and suspension are optimized to maintain consistent performance at high drive levels, with controlled excursion and reduced thermal compression during long-term operation.\n\nThe driver is intended for use with high-power amplification (approx. 1200 W AES \/ 2400 W continuous) and DSP control. A high-pass filter in the range of 20-29 Hz is recommended depending on enclosure tuning, along with proper limiting to manage thermal and mechanical stress. Typical operating bandwidth is 25-100 Hz, making it suitable for integration with mid-bass or full-range systems.\n\nThis design is particularly effective in single or multi-driver bass reflex systems used in touring, installation, and high-SPL applications, where consistent performance, durability, and output capability are critical.","recommended_enclosure":"Recommended enclosure alignments (bass reflex):\n- 210 liters tuned to 37 Hz: high output, strong mid-bass, reduced excursion; -3 dB approx. 34 Hz, HP filter 29 Hz\n- 245 liters tuned to 32 Hz: balanced response, general-purpose (recommended); -3 dB approx. 27 Hz, HP filter 22 Hz\n- 275 liters tuned to 29 Hz: extended low-frequency, requires HP filter protection; -3 dB approx. 25 Hz, HP filter 20 Hz"},"assets":{"photos":["https:\/\/redcatt.net\/storage\/products\/web\/DR-18-019-8R-B2-C0001-photo1.jpg","https:\/\/redcatt.net\/storage\/products\/web\/DR-18-019-8R-B2-C0001-photo2.jpg","https:\/\/redcatt.net\/storage\/products\/web\/DR-18-019-8R-B2-C0001-photo3.jpg","https:\/\/redcatt.net\/storage\/products\/web\/DR-18-019-8R-B2-C0001-photo4.jpg"],"freq_response_image":"https:\/\/redcatt.net\/storage\/products\/web\/DR-18-019-8R-B2-C0001-freqResponseImpedance.jpg","drawing_2d_pdf":"https:\/\/redcatt.net\/storage\/products\/downloads\/DR-18-019-8R-B2-C0001-drawing2dPdf.pdf","drawing_2d_image":"https:\/\/redcatt.net\/storage\/products\/web\/DR-18-019-8R-B2-C0001-drawing2dJpg.jpg","step_3d":"https:\/\/redcatt.net\/storage\/products\/downloads\/DR-18-019-8R-B2-C0001-step3d.step"}},{"code":"DR-15-007-8R-B2-C0001","name":"152FIND","slug":"dr-15-007-8r-b2-c0001","description":"Woofer\/15inch\/Ferrite\/Paper\/800W\/8ohm","url":"https:\/\/redcatt.net\/products\/dr-15-007-8r-b2-c0001","category":"LF","type":"Woofer","size_inches":15,"is_featured":false,"general":{"nominal_impedance":"8","magnet":"Ferrite","basket_material":"Aluminum"},"power_handling":{"aes_watts":"800","continuous_watts":"1600","peak_watts":"3200"},"voice_coil":{"diameter":"76","wire":"CCAW","former":"Glass Fiber","winding_height":"19"},"thiele_small_parameters":{"fs_hz":37,"re_ohm":4.6,"qes":0.46,"qms":10.2,"qts":0.44,"vas_liters":119,"sd_cm2":804,"sensitivity_db":95.62,"mms_grams":140,"rms":3.19,"cms":0.13,"bl_tm":18.4,"le_mh":0.55},"physical":{"overall_diameter_mm":392,"bolt_circle_diameter_mm":375,"baffle_cutout_diameter_mm":360,"mounting_holes":"8","depth_mm":143,"net_weight_kg":9,"xmax_mm":"4.5","xmech_mm":"14.5"},"materials":{"surround":"NBR","cone_dome":"Paper CF","spider":"Nomex"},"content":{"key_features":["EXTENDED LOW FREQUENCY RESPONSE","Carbon fiber reinforced cone","High excursion rubber surround"],"design_notes":"The 152FIND-333 is a high efficiency, (96 dB 1watt \/ 1 meter) 15-inch woofer with linear frequency response characteristics and high power handling capability. The 152FIND-333 uses a lightweight carbon fiber loaded cone assembly along with a high excursion rubber surround. This combination greatly improves low-frequency response and provides great level of control over the moving cone at high excursion levels. We have designed a lightweight surround, using our own rubber compound. As the result, the SPL is not compromised and the woofer can be used in professional audio applications, where high amounts of low frequencies are required.\n\nPower Handling\nAt the core of the 152FIND-333 is it\u2019s voice coil technology featuring a composite Polyimide former material capable of withstanding peak temperatures in excess of 280C, well beyond the thermal requirements of modern professional audio systems.\nThe 152FIND-333 cone is extensively treated to withstand harsh environments and high humidity. Metal parts in the speaker assembly are coated for extreme weatherization protection.","hero_text":null,"ai_summary":"The 152FINDX8-333 is a 15-inch professional mid-bass woofer designed for high-SPL two-way PA enclosures, fixed installation systems, and outdoor applications requiring extended low-frequency performance and high mechanical durability. The driver uses a 76 mm (3-inch) CCAW voice coil wound on a Polyimide former rated to 280 degC, delivering 800 W AES and 1600 W continuous power handling at 8 ohms. With a Ferrite motor producing a Bl of 18.4 T.m and a deliberately elevated moving mass of 140 g, the -333 is tuned to a lower resonant frequency of 37 Hz compared to other drivers in the 152FIND platform  -  a design choice that prioritizes bass extension and displacement control over peak sensitivity. The result is a measured sensitivity of 95.62 dB (1 W\/1 m), 3.4 dB below the higher-sensitivity -115 variant, with the trade-off being usable -3 dB output approximately 17 Hz lower. The voice coil inductance of Le=0.55 mH is significantly lower than competing 15-inch PA woofers of similar power class, reducing high-frequency inductance modulation distortion and preserving upper midrange clarity across the 50 Hz-1 kHz operating band at high displacement. The NBR rubber surround, produced from a REDCATT proprietary rubber compound, provides superior fatigue resistance, UV stability, ozone resistance, and compliance consistency compared to fabric surrounds under sustained high-excursion programme conditions, making the -333 the preferred choice for permanently installed outdoor systems and touring applications requiring extended service intervals.\n\nThe 152FINDX8-333 requires high-power professional amplification of 800-1600 W into 8 ohms, with DSP management mandatory including a 24 dB\/octave high-pass filter at 45, 38, or 33 Hz depending on alignment. Below the tuning frequency, enclosure acoustic loading is removed and cone excursion rises rapidly; the Xprot of 20 mm provides a generous mechanical safety margin, but displacement-limiting in DSP is still essential at full programme power. The recommended operating bandwidth extends from approximately 40 Hz to 1.0-1.5 kHz; a 24 dB\/octave low-pass crossover to a compression driver or high-frequency section at this frequency is standard for two-way system integration.\n\nThe 152FINDX8-333 is suited for: two-way touring PA enclosures requiring extended low-frequency performance and high mechanical durability from a 15-inch driver; permanently installed outdoor main speakers for amphitheatres, sports venues, festival sites, and theme parks where NBR rubber surround longevity is a primary service-life consideration; installed main speakers for theatres, houses of worship, and stadia where sub-bass coverage from the main enclosure is desirable; high-SPL club and venue systems operating at continuous programme levels with sustained high displacement; and cinema LF sections requiring bass guitar and low-drum fundamental reproduction without a supplementary subwoofer. Its combination of Fs=37 Hz, Le=0.55 mH, NBR rubber surround, and Polyimide former makes the -333 the acoustically deeper, mechanically more durable, and environmentally more robust variant within the 152FIND product platform.","recommended_enclosure":"Recommended enclosure alignments (bass reflex):\n- 75 liters tuned to 43 Hz: high output, strong mid-bass, reduced excursion; -3 dB approx. 40 Hz, HP filter 35 Hz\n- 85 liters tuned to 39 Hz: balanced response, general-purpose (recommended); -3 dB approx. 36 Hz, HP filter 29 Hz\n- 100 liters tuned to 35 Hz: extended low-frequency, requires HP filter protection; -3 dB approx. 30 Hz, HP filter 23 Hz"},"assets":{"photos":["https:\/\/redcatt.net\/storage\/products\/web\/DR-15-007-8R-B2-C0001-photo1.jpg","https:\/\/redcatt.net\/storage\/products\/web\/DR-15-007-8R-B2-C0001-photo2.jpg","https:\/\/redcatt.net\/storage\/products\/web\/DR-15-007-8R-B2-C0001-photo3.jpg","https:\/\/redcatt.net\/storage\/products\/web\/DR-15-007-8R-B2-C0001-photo4.jpg"],"freq_response_image":"https:\/\/redcatt.net\/storage\/products\/web\/DR-15-007-8R-B2-C0001-freqResponseImpedance.jpg","drawing_2d_pdf":"https:\/\/redcatt.net\/storage\/products\/downloads\/DR-15-007-8R-B2-C0001-drawing2dPdf.pdf","drawing_2d_image":"https:\/\/redcatt.net\/storage\/products\/web\/DR-15-007-8R-B2-C0001-drawing2dJpg.jpg","step_3d":"https:\/\/redcatt.net\/storage\/products\/downloads\/DR-15-007-8R-B2-C0001-step3d.step"}},{"code":"DR-15-008-8R-B2-C0001","name":"152FIND","slug":"dr-15-008-8r-b2-c0001","description":"Woofer\/15inch\/Ferrite\/Paper\/800W\/8ohm","url":"https:\/\/redcatt.net\/products\/dr-15-008-8r-b2-c0001","category":"LF","type":"Woofer","size_inches":15,"is_featured":false,"general":{"nominal_impedance":"8","magnet":"Ferrite","basket_material":"Aluminum"},"power_handling":{"aes_watts":"800","continuous_watts":"1600","peak_watts":"3200"},"voice_coil":{"diameter":"76","wire":"CCAW","former":"Glass Fiber","winding_height":"18.9"},"thiele_small_parameters":{"fs_hz":44,"re_ohm":4.8,"qes":0.38,"qms":13,"qts":0.37,"vas_liters":128.5,"sd_cm2":829.6,"sensitivity_db":99.03,"mms_grams":95.6,"rms":2,"cms":0.14,"bl_tm":18.3,"le_mh":0.98},"physical":{"overall_diameter_mm":392,"bolt_circle_diameter_mm":373,"baffle_cutout_diameter_mm":360,"mounting_holes":"8","depth_mm":137,"net_weight_kg":8.5,"xmax_mm":"4.45","xmech_mm":"14.45"},"materials":{"surround":"fabric","cone_dome":"Paper CF","spider":"Nomex"},"content":{"key_features":["EXTENDED LOW FREQUENCY RESPONSE","Lightweight carbon fiber loaded paper cone","High spl"],"design_notes":"The 152FIND is a high efficiency, (99 dB 1watt \/ 1 meter) 15-inch woofer with incredibly linear frequency response characteristics, high power handling capability while generating low harmonic distortion artifacts. The 152FIND uses a lightweight carbon fiber loaded cone assembly along with a high excursion triple roll constant geometry surround. This combination provides remarkable strength, high efficiency and a peak to peak maximum excursion of 15mm.\n\nPower Handling\nAt the core of the 152FIND is it\u2019s voice coil technology featuring a composite Polyimide former material capable of withstanding peak temperatures in excess of 280C, well beyond the thermal requirements of modern professional audio systems. \n\tThe 152FIND cone and dust cap are made using an advanced carbon fiber loaded REDCATT pulp. The woofer cone is also extensively treated to withstand harsh environments and high humidity. Metal parts in the speaker assembly are coated for extreme weatherization protection.","hero_text":null,"ai_summary":"The 152FINDX8-115 is a 15-inch professional mid-bass woofer designed for high-SPL two-way PA systems, installed loudspeakers, and touring enclosures operating across the 40-1000 Hz bandwidth. With a sensitivity of 99.03 dB (1 W\/1 m), it is among the highest-efficiency 15-inch woofer designs in the professional audio market, enabling competitive system SPL output from relatively compact enclosures and modest amplifier power. The driver uses a 76 mm (3-inch) CCAW voice coil wound on a Polyimide former rated to withstand peak temperatures in excess of 280 degC, providing sustained high-power handling without thermal compression across long-duration programme material. The Ferrite motor system delivers a Bl of 18.3 T.m at a Qts of 0.37, yielding a controlled, motor-damped response optimized for vented (bass reflex) alignment. The Qms of 13.0 indicates near-lossless mechanical suspension; essentially all system damping is provided by the motor and external amplifier, with the suspension contributing minimal resistive losses  -  a design approach that maximizes efficiency and sensitivity. The carbon fiber loaded REDCATT paper cone is treated against humidity and environmental exposure, and metal components are coated for weatherization, making the 152FIND suitable for permanent indoor and semi-outdoor installation.\n\nThe 152FINDX8-115 requires high-power professional amplification delivering 800-1600 W into 8 ohms, with DSP signal management mandatory for all alignments. A minimum 24 dB\/octave high-pass filter at 50, 40, or 35 Hz  -  depending on alignment  -  must be applied, as cone excursion rises rapidly below the vented tuning frequency where the enclosure no longer provides acoustic loading. Displacement and power limiting are recommended in all DSP presets. The recommended low-pass crossover frequency for integration with a compression driver or high-frequency section is 1.0-1.5 kHz at 24 dB\/octave, providing full programme bandwidth from a single two-way system. The CCAW voice coil winding, lighter than equivalent copper, contributes to the high sensitivity figure without sacrificing the current-carrying capacity required at 800 W AES power levels.\n\nThe 152FINDX8-115 is suited for: two-way touring PA enclosures where 15-inch woofer coverage and high sensitivity are required in a compact trapezoidal format; installed main and fill speakers for theatres, houses of worship, stadia, and outdoor amphitheatres; high-SPL club and venue main systems operating at continuous programme levels; mid-bass column and line array modules in large-format installation arrays; and cinema LF speaker assemblies requiring extended bass coverage from a single enclosure. Its 99.03 dB sensitivity, 800 W AES power handling, and Qms=13.0 near-lossless suspension make it a reference-class 15-inch professional woofer for applications where efficiency, SPL headroom, and thermal durability are the primary performance priorities.","recommended_enclosure":"Recommended enclosure alignments (bass reflex):\n- 95 liters tuned to 51 Hz: high output, strong mid-bass, reduced excursion; -3 dB approx. 47 Hz, HP filter 43 Hz\n- 110 liters tuned to 45 Hz: balanced response, general-purpose (recommended); -3 dB approx. 41 Hz, HP filter 35 Hz\n- 135 liters tuned to 39 Hz: extended low-frequency, requires HP filter protection; -3 dB approx. 33 Hz, HP filter 27 Hz"},"assets":{"photos":["https:\/\/redcatt.net\/storage\/products\/web\/DR-15-008-8R-B2-C0001-photo1.jpg","https:\/\/redcatt.net\/storage\/products\/web\/DR-15-008-8R-B2-C0001-photo2.jpg","https:\/\/redcatt.net\/storage\/products\/web\/DR-15-008-8R-B2-C0001-photo3.jpg"],"freq_response_image":"https:\/\/redcatt.net\/storage\/products\/web\/DR-15-008-8R-B2-C0001-freqResponseImpedance.jpg","drawing_2d_pdf":"https:\/\/redcatt.net\/storage\/products\/downloads\/DR-15-008-8R-B2-C0001-drawing2dPdf.pdf","drawing_2d_image":"https:\/\/redcatt.net\/storage\/products\/web\/DR-15-008-8R-B2-C0001-drawing2dJpg.jpg","step_3d":"https:\/\/redcatt.net\/storage\/products\/downloads\/DR-15-008-8R-B2-C0001-step3d.step"}},{"code":"DR-15-012-8R-B2-C0001","name":"154FIND","slug":"dr-15-012-8r-b2-c0001","description":"Mid-Woofer\/15inch\/Ferrite\/Paper\/500W\/8ohm","url":"https:\/\/redcatt.net\/products\/dr-15-012-8r-b2-c0001","category":"LF","type":"Mid-Woofer","size_inches":15,"is_featured":false,"general":{"nominal_impedance":"8","magnet":"Ferrite","basket_material":"Steel"},"power_handling":{"aes_watts":"500","continuous_watts":"1000","peak_watts":"2000"},"voice_coil":{"diameter":"63.5","wire":"Copper","former":"Glass Fiber","winding_height":"17"},"thiele_small_parameters":{"fs_hz":38,"re_ohm":5.6,"qes":0.43,"qms":8.1,"qts":0.4,"vas_liters":187.2,"sd_cm2":881,"sensitivity_db":97.38,"mms_grams":103,"rms":3.03,"cms":0.17,"bl_tm":18.1,"le_mh":0.97},"physical":{"overall_diameter_mm":387,"bolt_circle_diameter_mm":374,"baffle_cutout_diameter_mm":355,"mounting_holes":"8","depth_mm":155,"net_weight_kg":6.3,"xmax_mm":"4.5","xmech_mm":"12.5"},"materials":{"surround":"fabric","cone_dome":"Paper GF","spider":"Nomex"},"content":{"key_features":["Cost effective design, yet with high spl, extended mid frequency","Good power handling","Lightweight paper cone, conex spider"],"design_notes":"The 154FIND is a cost-effective solution for two-way and multi-way systems, together with subwoofers. It\u2019s lightweight yet strong cone allows the magnetic circuit to be size optimized while delivering a seizable amount of sound pressure. With its high efficiency (97 dB 1watt \/ 1 meter) and high power handling capabilities, this woofer will excel in all applications with tight budgets. The cone shape and material was developed to extend mid-frequency response, making the woofer good choice for two-way and multi-way systems.\u00a0\n\nPower Handling\nAt the core of the 154FIND is its voice coil technology featuring a composite Polyimide former material capable of withstanding peak temperatures above 280\u00b0C. The winding with high temperature handling copper wire ensures the long life of the voice coil, without the costly service cycles.\u00a0\nThe cone is also extensively treated to withstand harsh environments and high humidity. Metal parts in the speaker assembly are coated for extreme weatherization protection.","hero_text":null,"ai_summary":"The 154FINDX8-298 is a 15-inch high-output mid-woofer driver designed for professional 2-way and multi-way systems requiring high sensitivity (97 dB 1W\/1m) and controlled low-frequency behavior. The driver uses a balanced motor-suspension design that provides good cone control while maintaining usable output across its operating bandwidth.\n\nThe driver is intended for use with high-power amplification (approx. 500 W AES \/ 1000 W continuous) and DSP control. A high-pass filter in the range of 24-36 Hz is recommended depending on enclosure tuning, along with proper limiting to manage thermal and mechanical stress. Typical operating bandwidth is 31-1500 Hz, covering bass through upper-mid frequencies for direct integration with a compression driver or tweeter in a two-way or multi-way system.\n\nThis design is particularly effective in single or multi-driver bass reflex systems used in professional two-way and multi-way PA systems, powered monitors, and compact bass-reflex enclosures, where extended bandwidth, controlled distortion across the full operating range, and versatile system integration are required.","recommended_enclosure":"Recommended enclosure alignments (bass reflex):\n- 125 liters tuned to 44 Hz: high output, strong mid-bass, reduced excursion; -3 dB approx. 40 Hz, HP filter 36 Hz\n- 150 liters tuned to 40 Hz: balanced response, general-purpose (recommended); -3 dB approx. 37 Hz, HP filter 30 Hz\n- 150 liters tuned to 36 Hz: extended low-frequency, requires HP filter protection; -3 dB approx. 31 Hz, HP filter 24 Hz"},"assets":{"photos":["https:\/\/redcatt.net\/storage\/products\/web\/DR-15-012-8R-B2-C0001-photo1.jpg","https:\/\/redcatt.net\/storage\/products\/web\/DR-15-012-8R-B2-C0001-photo2.jpg","https:\/\/redcatt.net\/storage\/products\/web\/DR-15-012-8R-B2-C0001-photo3.jpg","https:\/\/redcatt.net\/storage\/products\/web\/DR-15-012-8R-B2-C0001-photo4.jpg"],"freq_response_image":"https:\/\/redcatt.net\/storage\/products\/web\/DR-15-012-8R-B2-C0001-freqResponseImpedance.jpg","drawing_2d_pdf":"https:\/\/redcatt.net\/storage\/products\/downloads\/DR-15-012-8R-B2-C0001-drawing2dPdf.pdf","drawing_2d_image":"https:\/\/redcatt.net\/storage\/products\/web\/DR-15-012-8R-B2-C0001-drawing2dJpg.jpg","step_3d":"https:\/\/redcatt.net\/storage\/products\/downloads\/DR-15-012-8R-B2-C0001-step3d.step"}},{"code":"DR-15-013-8R-B2-C0001","name":"155FIND","slug":"dr-15-013-8r-b2-c0001","description":"Woofer\/15inch\/Ferrite\/Paper\/400W\/8ohm","url":"https:\/\/redcatt.net\/products\/dr-15-013-8r-b2-c0001","category":"LF","type":"Woofer","size_inches":15,"is_featured":false,"general":{"nominal_impedance":"8","magnet":"Ferrite","basket_material":"Steel"},"power_handling":{"aes_watts":"400","continuous_watts":"800","peak_watts":"1600"},"voice_coil":{"diameter":"63.5","wire":"Copper","former":"Glass Fiber","winding_height":"15.5"},"thiele_small_parameters":{"fs_hz":40,"re_ohm":6.2,"qes":0.79,"qms":11.1,"qts":0.73,"vas_liters":166.5,"sd_cm2":881,"sensitivity_db":94.55,"mms_grams":102.6,"rms":2.32,"cms":0.15,"bl_tm":14.38,"le_mh":0.97},"physical":{"overall_diameter_mm":386,"bolt_circle_diameter_mm":373,"baffle_cutout_diameter_mm":352,"mounting_holes":"8","depth_mm":142,"net_weight_kg":4.5,"xmax_mm":"4.75","xmech_mm":"10.75"},"materials":{"surround":"fabric","cone_dome":"Paper GF","spider":"Nomex"},"content":{"key_features":["Cost effective design, yet with high spl, extended mid frequency","Good power handling","Lightweight paper cone, conex spider"],"design_notes":"The 154FIND is a cost-effective solution for two-way and multi-way systems, together with subwoofers. It\u2019s lightweight yet strong cone allows the magnetic circuit to be size optimized while delivering a seizable amount of sound pressure. With its high efficiency (97 dB 1watt \/ 1 meter) and high power handling capabilities, this woofer will excel in all applications with tight budgets. The cone shape and material was developed to extend mid-frequency response, making the woofer good choice for two-way and multi-way systems.\u00a0\n\nPower Handling\nAt the core of the 154FIND is its voice coil technology featuring a composite Polyimide former material capable of withstanding peak temperatures above 280\u00b0C. The winding with high temperature handling copper wire ensures the long life of the voice coil, without the costly service cycles.\u00a0\nThe cone is also extensively treated to withstand harsh environments and high humidity. Metal parts in the speaker assembly are coated for extreme weatherization protection.","hero_text":null,"ai_summary":"The 155FINDX8-367D is a 15-inch woofer designed for professional PA, live sound, and installed sound systems with 94.6 dB sensitivity (1W\/1m). The driver features a lightweight paper cone with fabric surround and Nomex spider, utilizing a ferrite magnet motor on a steel basket for cost-effective high-output performance. Weatherized construction with treated cone and coated metal parts supports operation in harsh environments.\n\nThe driver is intended for use with high-power amplification (approx. 400 W AES \/ 800 W continuous) and DSP control. A high-pass filter in the range of 32-45 Hz is recommended depending on enclosure tuning, along with proper limiting to manage thermal and mechanical stress. The extended cone geometry supports midrange response up to 2-2.5 kHz, making the driver suitable for two-way system configurations.\n\nThis design is particularly effective in single or multi-driver bass reflex systems used in PA, live sound, rental, and installed sound applications, where cost-effective performance, weatherized durability, and high output capability are required.","recommended_enclosure":"Recommended enclosure alignments (bass reflex):\n- 55 liters tuned to 46 Hz: high output, strong mid-bass, reduced excursion; -3 dB approx. 42 Hz, HP filter 38 Hz\n- 65 liters tuned to 42 Hz: balanced response, general-purpose (recommended); -3 dB approx. 39 Hz, HP filter 32 Hz\n- 80 liters tuned to 38 Hz: extended low-frequency, requires HP filter protection; -3 dB approx. 32 Hz, HP filter 26 Hz"},"assets":{"photos":["https:\/\/redcatt.net\/storage\/products\/web\/DR-15-013-8R-B2-C0001-photo1.jpg","https:\/\/redcatt.net\/storage\/products\/web\/DR-15-013-8R-B2-C0001-photo2.jpg","https:\/\/redcatt.net\/storage\/products\/web\/DR-15-013-8R-B2-C0001-photo3.jpg"],"freq_response_image":"https:\/\/redcatt.net\/storage\/products\/web\/DR-15-013-8R-B2-C0001-freqResponseImpedance.jpg","drawing_2d_pdf":"https:\/\/redcatt.net\/storage\/products\/downloads\/DR-15-013-8R-B2-C0001-drawing2dPdf.pdf","drawing_2d_image":"https:\/\/redcatt.net\/storage\/products\/web\/DR-15-013-8R-B2-C0001-drawing2dJpg.jpg","step_3d":"https:\/\/redcatt.net\/storage\/products\/downloads\/DR-15-013-8R-B2-C0001-step3d.step"}},{"code":"DR-15-016-8R-B2-C0001","name":"15FHW","slug":"dr-15-016-8r-b2-c0001","description":"Woofer\/15inch\/Ferrite\/Paper\/400W\/8ohm","url":"https:\/\/redcatt.net\/products\/dr-15-016-8r-b2-c0001","category":"LF","type":"Woofer","size_inches":15,"is_featured":false,"general":{"nominal_impedance":"8","magnet":"Ferrite","basket_material":"Steel"},"power_handling":{"aes_watts":"400","continuous_watts":"800","peak_watts":"1600"},"voice_coil":{"diameter":"76","wire":"Copper","former":"Glass Fiber","winding_height":"19.7"},"thiele_small_parameters":{"fs_hz":24,"re_ohm":5.8,"qes":0.63,"qms":11.9,"qts":0.6,"vas_liters":221.2,"sd_cm2":804,"sensitivity_db":90.67,"mms_grams":169.6,"rms":2.15,"cms":0.26,"bl_tm":15.8,"le_mh":0.96},"physical":{"overall_diameter_mm":385,"bolt_circle_diameter_mm":371,"baffle_cutout_diameter_mm":349,"mounting_holes":"8","depth_mm":168.1,"net_weight_kg":6.8,"xmax_mm":"4.85","xmech_mm":"14.85"},"materials":{"surround":"NBR","cone_dome":"Paper GF","spider":null},"content":{"key_features":["Hi sensitivity, low resonant frequency","Nomex spider","Strong, yet lightweight cone"],"design_notes":"The 15FHW is an ultra low frequency sub-woofer, designed to deliver large amounts of very low frequencies. With 91 dB 1watt \/ 1 meter sensitivity, you find this 15-inch sub-woofer with incredibly linear frequency response characteristics ideally assembled in sub-woofers for hi-fi, gaming, studios or cinema. The 15FHW uses a strong paper cone, along with a high excursion single roll rubber surround. Rubber surround material was specifically developed for this application. The shape of the surround roll was FEM optimized to ensure low distortion in whole working range. \n\nPower Handling\nAt the core of the 15FHW is it\u2019s voice coil technology featuring a composite Polyimide former material capable of withstanding peak temperatures in excess of 200\u00b0C, well beyond the thermal requirements of modern professional audio systems. \n \nREDCATT has implemented a Nomex(r) spider design to ensure long term Fs memory, consistency and diminish anomalies associated with spider deterioration.","hero_text":null,"ai_summary":"The 15FHWX8-089 is a 15-inch cost-effective deep-bass subwoofer designed for home cinema, KTV, studio monitoring, and hi-fi systems where very low-frequency extension is the primary performance objective. With a free-air resonant frequency of 24 Hz  -  among the lowest available in a 15-inch driver format  -  the 15FHW is optimized to reproduce the full audible bass spectrum and the tactile infrasonic range required by modern object-based cinema audio formats such as Dolby Atmos and DTS:X. The driver uses a 76 mm copper voice coil on a Polyimide former rated to 200 degC, delivering 400 W AES at 8 ohms in a cost-optimized package that includes a steel basket, ferrite motor, and glass fiber reinforced paper cone  -  a construction approach that concentrates the acoustic performance budget in the motor system and moving assembly rather than in structural materials. The NBR rubber surround is produced using a FEM-optimized single-roll profile designed to minimize geometric nonlinearity across the full Xmax excursion range, and the Nomex spider is specified for long-term Fs consistency, ensuring that the driver's critically low resonant frequency remains stable over the service life of the installation.\n\nSealed alignments of 40, 60, and 80 litres produce system Qtc values of 1.53, 1.30, and 1.16 respectively, with natural -3dB points at 43, 37, and 35 Hz. These alignments are particularly suited to DSP-active subwoofer systems employing Linkwitz Transform (LT) equalization, which corrects the rising sealed response to a flat target alignment and extends usable bass output to 16-20 Hz from compact enclosures. The 40 L sealed cabinet achieves extension to approximately 20 Hz with LT correction from an enclosure of approximately 380x380x320mm external  -  a practical size for built-in, in-wall, and under-seat home cinema installations. The amplifier must provide headroom of approximately 11-14 dB at the target low-frequency extension point relative to the unequalized response; a high-quality Class-D amplifier of 400 W or greater with DSP LT capability is the appropriate system amplification for all three sealed alignments.\n\nThe 15FHWX8-089 is suited for: home cinema subwoofer systems requiring LFE channel reproduction to 20-30 Hz from a single 15-inch driver; KTV and entertainment venue bass cabinets where deep tactile bass impact is valued at controlled cost; professional studio monitoring subwoofer extensions for bass verification in music production, film post-production, and game audio; audiophile hi-fi subwoofers for music systems where bass guitar, double bass, pipe organ, and synthesizer sub-register reproduction is required; and multimedia subwoofer systems in themed entertainment, simulation, and exhibit environments. Its Fs=24 Hz, FEM-optimized surround, and Nomex spider make it the appropriate choice in the REDCATT portfolio for deep-bass civilian applications where cost-effectiveness and infrasonic extension take precedence over maximum sensitivity and professional output capability.","recommended_enclosure":"Recommended enclosure alignments (bass reflex):\n- 90 liters tuned to 28 Hz: high output, strong mid-bass, reduced excursion; -3 dB approx. 26 Hz, HP filter 25 Hz\n- 105 liters tuned to 25 Hz: balanced response, general-purpose (recommended); -3 dB approx. 23 Hz, HP filter 22 Hz\n- 125 liters tuned to 23 Hz: extended low-frequency, requires HP filter protection; -3 dB approx. 20 Hz, HP filter 20 Hz"},"assets":{"photos":["https:\/\/redcatt.net\/storage\/products\/web\/DR-15-016-8R-B2-C0001-photo1.jpg","https:\/\/redcatt.net\/storage\/products\/web\/DR-15-016-8R-B2-C0001-photo2.jpg","https:\/\/redcatt.net\/storage\/products\/web\/DR-15-016-8R-B2-C0001-photo3.jpg","https:\/\/redcatt.net\/storage\/products\/web\/DR-15-016-8R-B2-C0001-photo4.jpg"],"freq_response_image":"https:\/\/redcatt.net\/storage\/products\/web\/DR-15-016-8R-B2-C0001-freqResponseImpedance.jpg","drawing_2d_pdf":"https:\/\/redcatt.net\/storage\/products\/downloads\/DR-15-016-8R-B2-C0001-drawing2dPdf.pdf","drawing_2d_image":"https:\/\/redcatt.net\/storage\/products\/web\/DR-15-016-8R-B2-C0001-drawing2dJpg.jpg","step_3d":"https:\/\/redcatt.net\/storage\/products\/downloads\/DR-15-016-8R-B2-C0001-step3d.step"}},{"code":"DR-15-017-8R-B2-C0001","name":"15FIND","slug":"dr-15-017-8r-b2-c0001","description":"Woofer\/15inch\/Ferrite\/Paper\/1000W\/8ohm","url":"https:\/\/redcatt.net\/products\/dr-15-017-8r-b2-c0001","category":"LF","type":"Woofer","size_inches":15,"is_featured":false,"general":{"nominal_impedance":"8","magnet":"Ferrite","basket_material":"Aluminum"},"power_handling":{"aes_watts":"1000","continuous_watts":"2000","peak_watts":"4000"},"voice_coil":{"diameter":"101.6","wire":"Copper","former":"Glass Fiber","winding_height":"25.5"},"thiele_small_parameters":{"fs_hz":42,"re_ohm":5.4,"qes":0.37,"qms":8.31,"qts":0.36,"vas_liters":96.4,"sd_cm2":881,"sensitivity_db":96.65,"mms_grams":159.6,"rms":5.1,"cms":0.09,"bl_tm":24.6,"le_mh":1.18},"physical":{"overall_diameter_mm":392,"bolt_circle_diameter_mm":373,"baffle_cutout_diameter_mm":360,"mounting_holes":"8","depth_mm":150,"net_weight_kg":12,"xmax_mm":"6.75","xmech_mm":"18.75"},"materials":{"surround":"fabric","cone_dome":"Paper GF","spider":"Nomex"},"content":{"key_features":["Glass fiber and rib reinforced paper cone","fem optimized air circulation","Silicone sealed surround"],"design_notes":"The 15FIND is a high efficiency, (97 dB 1watt \/ 1 meter) 15-inch woofer with incredibly linear frequency response characteristics, extreme high power handling capability while generating low harmonic distortion artifacts. The 15FIND uses a lightweight, but strong, glass fiber loaded cone assembly along with a high excursion triple roll constant geometry surround. This combination provides remarkable strength, high efficiency and a peak to peak maximum excursion of 21mm. \n\nPower Handling\nAt the core of the 15FIND is it\u2019s voice coil technology featuring a composite Polyimide former material capable of withstanding peak temperatures in excess of 250\u00b0C, well beyond the thermal requirements of modern professional audio systems. Winding if winded on the outside and inside of the former.\n \nREDCATT has implemented a silicone spider design to ensure long term Fs memory, consistency and diminish anomalies associated with spider deterioration. The sealed spider works as a air pump and pushes the air trough out motor to","hero_text":null,"ai_summary":"The 15FINDX8-035 is a 15-inch high-efficiency professional woofer rated at 1,000 W AES (2,000 W continuous) into a nominal 8-ohm load. Sensitivity is 96.65 dB (1 W\/1 m), among the highest in the 15-inch format. The Qts of 0.36 reflects a motor-suspension design optimized to maintain consistent performance at high drive levels, with controlled excursion and reduced thermal compression during long-term operation. The 101.6 mm (4-inch) voice coil on a glass fiber former with copper windings and Polyimide insulation (250  degC rated) provides the thermal headroom required for sustained high-power operation. A silicone-treated Nomex spider ensures long-term resonant frequency stability and mechanical consistency under high-excursion cycling. The glass fiber loaded paper cone and fabric triple-roll constant geometry surround deliver robust mechanical performance throughout the rated Xmax of 6.75 mm (one-way linear).\n\nThe driver is rated for approximately 1,000 W AES (2,000 W continuous) and requires high-power professional amplification. A high-pass filter in the 33-42 Hz range (24 dB\/octave Linkwitz-Riley) is recommended depending on enclosure tuning, with excursion limiting applied below the port tuning frequency. Typical operating bandwidth is 35-200 Hz in subwoofer applications. DSP processing with peak limiting and crossover control is required for sustained high-power touring and fixed-installation use.\n\nThe 15FINDX8-035 is particularly effective in single or multi-driver bass reflex subwoofer enclosures for touring PA, fixed-installation bass systems, and high-SPL bass reproduction where high sensitivity, 1,000 W AES power handling, and the proven glass fiber cone assembly provide consistent, durable performance. The 8-ohm nominal impedance enables flexible series\/parallel wiring configurations for multi-driver subwoofer arrays.","recommended_enclosure":"Recommended enclosure alignments (bass reflex):\n- 75 liters tuned to 48 Hz: high output, strong mid-bass, reduced excursion; -3 dB approx. 44 Hz, HP filter 40 Hz\n- 85 liters tuned to 42 Hz: balanced response, general-purpose (recommended); -3 dB approx. 39 Hz, HP filter 32 Hz\n- 100 liters tuned to 37 Hz: extended low-frequency, requires HP filter protection; -3 dB approx. 31 Hz, HP filter 25 Hz"},"assets":{"photos":["https:\/\/redcatt.net\/storage\/products\/web\/DR-15-017-8R-B2-C0001-photo1.jpg","https:\/\/redcatt.net\/storage\/products\/web\/DR-15-017-8R-B2-C0001-photo2.jpg","https:\/\/redcatt.net\/storage\/products\/web\/DR-15-017-8R-B2-C0001-photo3.jpg","https:\/\/redcatt.net\/storage\/products\/web\/DR-15-017-8R-B2-C0001-photo4.jpg"],"freq_response_image":"https:\/\/redcatt.net\/storage\/products\/web\/DR-15-017-8R-B2-C0001-freqResponseImpedance.jpg","drawing_2d_pdf":"https:\/\/redcatt.net\/storage\/products\/downloads\/DR-15-017-8R-B2-C0001-drawing2dPdf.pdf","drawing_2d_image":"https:\/\/redcatt.net\/storage\/products\/web\/DR-15-017-8R-B2-C0001-drawing2dJpg.jpg","step_3d":"https:\/\/redcatt.net\/storage\/products\/downloads\/DR-15-017-8R-B2-C0001-step3d.step"}},{"code":"DR-15-018-8R-B2-C0001","name":"15FPM","slug":"dr-15-018-8r-b2-c0001","description":"Mid-Woofer\/15inch\/Ferrite\/Paper\/1000W\/8ohm","url":"https:\/\/redcatt.net\/products\/dr-15-018-8r-b2-c0001","category":"LF","type":"Mid-Woofer","size_inches":15,"is_featured":false,"general":{"nominal_impedance":"8","magnet":"Ferrite","basket_material":"Aluminum"},"power_handling":{"aes_watts":"1000","continuous_watts":"2000","peak_watts":"4000"},"voice_coil":{"diameter":"101.6","wire":null,"former":"Glass Fiber","winding_height":"21"},"thiele_small_parameters":{"fs_hz":41,"re_ohm":5.2,"qes":0.38,"qms":8.07,"qts":0.36,"vas_liters":134.9,"sd_cm2":908,"sensitivity_db":97.87,"mms_grams":126.6,"rms":4.04,"cms":0.12,"bl_tm":21.3,"le_mh":1.17},"physical":{"overall_diameter_mm":392,"bolt_circle_diameter_mm":373,"baffle_cutout_diameter_mm":360,"mounting_holes":"8","depth_mm":150,"net_weight_kg":12,"xmax_mm":"4.5","xmech_mm":"16.5"},"materials":{"surround":"fabric","cone_dome":"Paper CF","spider":"Nomex"},"content":{"key_features":["Carbon fiber reinforced paper cone","Square Aluminum winding wire (ALR)","Great option for powerful 2-way systems"],"design_notes":"The 15FPM is a high efficiency, (98 dB 1watt \/ 1 meter) 15-inch woofer with incredibly linear frequency response characteristics. The 15FPM uses a lightweight, but strong, carbon fiber loaded cone assembly along with a high excursion triple roll constant geometry surround. Cone material was specifically developed with 2-way or multi-way application in mind. The 15FPM has extended mid frequency range, providing possibility for cross overs at higher frequencies.\n\nPower Handling\nAt the core of the 15FPM is it\u2019s voice coil technology featuring a composite Polyimide former material capable of withstanding peak temperatures in excess of 250\u00b0C, well beyond the thermal requirements of modern professional audio systems. The coil is wound on the outside of the former. Winding material is aluminum ribbon, material that provides ideal transient response.\n \nREDCATT has implemented a silicone spider design to ensure long term Fs memory, consistency and diminish anomalies associated with spider deterioration. The sealed spi","hero_text":null,"ai_summary":"The 15FPMX8-063 is a 15-inch high-efficiency professional mid-woofer rated at 1,000 W AES (2,000 W continuous) into a nominal 8-ohm load. Sensitivity is 97.87 dB (1 W\/1 m), among the highest in the 15-inch format. The Qts of 0.36 reflects a motor-suspension design optimized to maintain consistent performance at high drive levels with controlled excursion and reduced thermal compression. The 101.6 mm (4-inch) voice coil uses aluminum ribbon wire (ALR) wound on a glass fiber former with Polyimide insulation (250  degC rated), providing a low-mass, high-conductivity winding that delivers excellent transient response and thermal headroom for 2,000 W continuous operation. The carbon fiber loaded paper cone extends the pistonic operating range into the midrange, enabling crossover integration with compression drivers at 1-2 kHz and making the 15FPM the preferred mid-woofer choice for powerful 2-way and multi-way PA systems.\n\nThe driver is rated for approximately 1,000 W AES (2,000 W continuous) and requires high-power professional amplification. A high-pass filter in the 32-42 Hz range (24 dB\/octave Linkwitz-Riley) is recommended depending on enclosure tuning. The extended midrange response supports crossover to a compression driver in the 1-2 kHz range, with a 24 dB\/octave Linkwitz-Riley crossover at 1-1.5 kHz recommended. DSP alignment and peak limiting are required for sustained high-power professional applications.\n\nThe 15FPMX8-063 is particularly effective in 2-way and 3-way touring PA top cabinets, powered monitor systems, and high-power bass reflex enclosures where a 15-inch mid-woofer with extended midrange response, very high sensitivity, and aluminum ribbon voice coil technology is required. Good to use with 1.4-inch or 1.8-inch compression drivers such as 140FCDX8-087, 140NCDX8-077, 180FCDPX8-330, or 180FCDX8-044 in 2-way high-power PA top cabinets.","recommended_enclosure":"Recommended enclosure alignments (bass reflex):\n- 105 liters tuned to 47 Hz: high output, strong mid-bass, reduced excursion; -3 dB approx. 43 Hz, HP filter 39 Hz\n- 120 liters tuned to 41 Hz: balanced response, general-purpose (recommended); -3 dB approx. 38 Hz, HP filter 31 Hz\n- 145 liters tuned to 36 Hz: extended low-frequency, requires HP filter protection; -3 dB approx. 31 Hz, HP filter 24 Hz"},"assets":{"photos":["https:\/\/redcatt.net\/storage\/products\/web\/DR-15-018-8R-B2-C0001-photo1.jpg","https:\/\/redcatt.net\/storage\/products\/web\/DR-15-018-8R-B2-C0001-photo2.jpg","https:\/\/redcatt.net\/storage\/products\/web\/DR-15-018-8R-B2-C0001-photo3.jpg","https:\/\/redcatt.net\/storage\/products\/web\/DR-15-018-8R-B2-C0001-photo4.jpg"],"freq_response_image":"https:\/\/redcatt.net\/storage\/products\/web\/DR-15-018-8R-B2-C0001-freqResponseImpedance.jpg","drawing_2d_pdf":"https:\/\/redcatt.net\/storage\/products\/downloads\/DR-15-018-8R-B2-C0001-drawing2dPdf.pdf","drawing_2d_image":"https:\/\/redcatt.net\/storage\/products\/web\/DR-15-018-8R-B2-C0001-drawing2dJpg.jpg","step_3d":"https:\/\/redcatt.net\/storage\/products\/downloads\/DR-15-018-8R-B2-C0001-step3d.step"}},{"code":"DR-15-025-8R-B2-C0001","name":"15NPM","slug":"dr-15-025-8r-b2-c0001","description":"Mid-Woofer\/15inch\/Neo\/Paper\/800W\/8ohm","url":"https:\/\/redcatt.net\/products\/dr-15-025-8r-b2-c0001","category":"LF","type":"Mid-Woofer","size_inches":15,"is_featured":false,"general":{"nominal_impedance":"8","magnet":"Neodymium","basket_material":"Aluminum"},"power_handling":{"aes_watts":"800","continuous_watts":"1600","peak_watts":"3200"},"voice_coil":{"diameter":"101.6","wire":null,"former":"Glass Fiber","winding_height":"23"},"thiele_small_parameters":{"fs_hz":48,"re_ohm":4.7,"qes":0.47,"qms":16.5,"qts":0.46,"vas_liters":89.9,"sd_cm2":855.3,"sensitivity_db":97.73,"mms_grams":123,"rms":2.25,"cms":0.09,"bl_tm":19.3,"le_mh":0.68},"physical":{"overall_diameter_mm":392,"bolt_circle_diameter_mm":373,"baffle_cutout_diameter_mm":360,"mounting_holes":"8","depth_mm":149.5,"net_weight_kg":6.65,"xmax_mm":"5.25","xmech_mm":"17.75"},"materials":{"surround":"fabric","cone_dome":"Paper CF","spider":"Nomex"},"content":{"key_features":["EXTENDED FREQUENCY RESPONSE","2 demodulation rings, lightweight carbon fiber loaded paper cone","Hi BL, Double air-gap, powerful motor structure"],"design_notes":"The 15NPM is a truly unique full range woofer. We have designed cutting edge product, using the best available materials and highly optimized design for the best performance in its class. It delivers very high efficiency, (98 dB 1watt \/ 1 meter), incredibly linear frequency response characteristics with extended HF frequency response, high power handling capability, while generating ultra low harmonic distortion artifacts. The 15NPM uses a lightweight carbon fiber loaded cone assembly along with a high excursion triple roll constant geometry surround. This combination provides remarkable strength, high efficiency and a peak to peak linear excursion of 21mm.\n\nMagnetic Circuit\nThe magnetic circuit sports two aluminum shorting rings, double air-gap front plate. The cooling system and the air flow has been designed using modern FEM techniques and further optimized to provide the highest levels of cooling efficiency. The magnetic circuit design is optimized to generate the minimum amount of flux modulation, providing exceptional stability..","hero_text":null,"ai_summary":"The 15NPMX8-262 is a 15-inch high-output mid-woofer driver designed for professional 2-way and multi-way systems requiring high sensitivity (98 dB 1W\/1m) and controlled low-frequency behavior. The driver features a compliant suspension design suited to moderate-volume enclosures with extended low-frequency response.\n\nThe driver is intended for use with high-power amplification (approx. 800 W AES \/ 1600 W continuous) and DSP control. A high-pass filter in the range of 34-47 Hz is recommended depending on enclosure tuning, along with proper limiting to manage thermal and mechanical stress. Typical operating bandwidth is 39-1500 Hz, covering bass through upper-mid frequencies for direct integration with a compression driver or tweeter in a two-way or multi-way system.\n\nThis design is particularly effective in single or multi-driver bass reflex systems used in professional two-way and multi-way PA systems, powered monitors, and compact bass-reflex enclosures, where extended bandwidth, controlled distortion across the full operating range, and versatile system integration are required.","recommended_enclosure":"Recommended enclosure alignments (bass reflex):\n- 50 liters tuned to 55 Hz: high output, strong mid-bass, reduced excursion; -3 dB approx. 51 Hz, HP filter 47 Hz\n- 60 liters tuned to 50 Hz: balanced response, general-purpose (recommended); -3 dB approx. 46 Hz, HP filter 40 Hz\n- 75 liters tuned to 46 Hz: extended low-frequency, requires HP filter protection; -3 dB approx. 39 Hz, HP filter 34 Hz"},"assets":{"photos":["https:\/\/redcatt.net\/storage\/products\/web\/DR-15-025-8R-B2-C0001-photo1.jpg","https:\/\/redcatt.net\/storage\/products\/web\/DR-15-025-8R-B2-C0001-photo2.jpg","https:\/\/redcatt.net\/storage\/products\/web\/DR-15-025-8R-B2-C0001-photo3.jpg","https:\/\/redcatt.net\/storage\/products\/web\/DR-15-025-8R-B2-C0001-photo4.jpg"],"freq_response_image":"https:\/\/redcatt.net\/storage\/products\/web\/DR-15-025-8R-B2-C0001-freqResponseImpedance.jpg","drawing_2d_pdf":"https:\/\/redcatt.net\/storage\/products\/downloads\/DR-15-025-8R-B2-C0001-drawing2dPdf.pdf","drawing_2d_image":"https:\/\/redcatt.net\/storage\/products\/web\/DR-15-025-8R-B2-C0001-drawing2dJpg.jpg","step_3d":"https:\/\/redcatt.net\/storage\/products\/downloads\/DR-15-025-8R-B2-C0001-step3d.step"}},{"code":"DR-15-027-8R-B2-C0001","name":"15NPW","slug":"dr-15-027-8r-b2-c0001","description":"Woofer\/15inch\/Neo\/Paper\/1200W\/8ohm","url":"https:\/\/redcatt.net\/products\/dr-15-027-8r-b2-c0001","category":"LF","type":"Woofer","size_inches":15,"is_featured":false,"general":{"nominal_impedance":"8","magnet":"Neodymium","basket_material":"Aluminum"},"power_handling":{"aes_watts":"1200","continuous_watts":"2400","peak_watts":"4800"},"voice_coil":{"diameter":"4","wire":"Copper","former":"Glass Fiber","winding_height":"25.5"},"thiele_small_parameters":{"fs_hz":40,"re_ohm":5.6,"qes":0.28,"qms":8.77,"qts":0.27,"vas_liters":107,"sd_cm2":881,"sensitivity_db":97.34,"mms_grams":155.1,"rms":4.44,"cms":0.1,"bl_tm":28.3,"le_mh":1.65},"physical":{"overall_diameter_mm":392,"bolt_circle_diameter_mm":373,"baffle_cutout_diameter_mm":360,"mounting_holes":"8","depth_mm":155.5,"net_weight_kg":8.5,"xmax_mm":"5.75","xmech_mm":"19.75"},"materials":{"surround":null,"cone_dome":null,"spider":"Nomex"},"content":{"key_features":["Carbon fiber loaded paper cone","Double silicone spider","High power handling"],"design_notes":"The 15NPW is a high efficiency, (97 dB 1watt \/ 1 meter) 15-inch woofer with linear frequency response characteristics, high power handling capability while generating low harmonic distortion artifacts. The 15NPW uses a lightweight carbon fiber loaded cone assembly along with a high excursion triple roll constant geometry surround. This combination provides remarkable strength, high efficiency and a peak to peak maximum excursion of 15mm. Woofer features REDCATT double silicone sealed spider. \n\nPower Handling\nAt the core of the 15NPW is it\u2019s voice coil technology featuring a composite Polyimide former material capable of withstanding peak temperatures in excess of 350degC, well beyond the thermal requirements of modern professional audio systems. \n\tThe 15NPW cone and dust cap are made using an advanced carbon fiber loaded REDCATT pulp. The woofer cone is also extensively treated to withstand harsh environments and high humidity. Metal parts in the speaker assembly are coated for extreme weatherization protection.","hero_text":null,"ai_summary":"The 15NPWX8-016 is a 15-inch professional woofer designed for the highest-demand touring PA, installed sound, and cinema applications requiring maximum acoustic output, thermal durability, and motor linearity from a single 15-inch driver. With a sensitivity of 97.34 dB (1 W\/1 m) and an AES power handling of 1200 W at 8 ohms, the driver delivers a calculated maximum SPL of approximately 128 dB at 1 metre  -  among the highest figures available in the professional 15-inch woofer category. The motor system uses a 4-inch copper voice coil wound on a Polyimide former rated to withstand peak temperatures in excess of 350 degC, providing sustained operation at continuous programme levels without thermal compression or former failure under the most demanding long-term drive conditions. The Neodymium magnet structure produces a Bl of 28.3 T.m at a Qts of 0.27, placing the 15NPW in the strong-motor professional woofer class where vented (bass reflex) enclosures are the only appropriate alignment. The carbon fiber loaded REDCATT paper cone assembly is treated against humidity and environmental exposure; the double silicone sealed Nomex spider provides moisture ingress protection for permanent installation and touring use.\n\nThe 15NPWX8-016 requires professional high-power amplification of 1200-2400 W into 8 ohms, with DSP control mandatory for all alignments. A 24 dB\/octave high-pass filter set at 50, 42, or 36 Hz depending on the alignment is required; the vented enclosure unloads the cone below Fb, and with Xprot=14.6 mm, displacement limiting must be active at full amplifier power to prevent progressive mechanical overload below the tuning frequency at high programme levels. The recommended operating bandwidth is approximately 40 Hz to 1.5 kHz, with a 24 dB\/octave low-pass crossover to a compression driver or high-frequency section at 1.0-1.5 kHz appropriate for standard two-way system integration.\n\nThe 15NPWX8-016 is suited for: two-way touring PA enclosures requiring maximum SPL from a single 15-inch driver; flyable and fixed-install main speakers for theatres, stadia, arenas, houses of worship, and outdoor festivals; cinema main LF speaker assemblies where thermal durability and programme-consistent output across extended programme durations are required; high-SPL column array woofer sections; and reference two-way installed PA systems for venues where a single 15-inch cabinet must deliver full-bandwidth coverage at continuous programme levels without supplementary sub-bass reinforcement. Its combination of 97.34 dB sensitivity, 1200 W AES power handling, Neodymium motor with 350 degC-rated Polyimide former, and carbon fiber loaded cone positions the 15NPW as the highest-output 15-inch driver in the REDCATT NPW platform for mid-to-large-scale professional audio applications.","recommended_enclosure":"Recommended enclosure alignments (bass reflex):\n- 110 liters tuned to 40 Hz: high output, strong mid-bass, reduced excursion; -3 dB approx. 37 Hz, HP filter 32 Hz\n- 130 liters tuned to 35 Hz: balanced response, general-purpose (recommended); -3 dB approx. 30 Hz, HP filter 25 Hz\n- 150 liters tuned to 31 Hz: extended low-frequency, requires HP filter protection; -3 dB approx. 26 Hz, HP filter 20 Hz"},"assets":{"photos":["https:\/\/redcatt.net\/storage\/products\/web\/DR-15-027-8R-B2-C0001-photo1.jpg","https:\/\/redcatt.net\/storage\/products\/web\/DR-15-027-8R-B2-C0001-photo2.jpg","https:\/\/redcatt.net\/storage\/products\/web\/DR-15-027-8R-B2-C0001-photo3.jpg","https:\/\/redcatt.net\/storage\/products\/web\/DR-15-027-8R-B2-C0001-photo4.jpg"],"freq_response_image":"https:\/\/redcatt.net\/storage\/products\/web\/DR-15-027-8R-B2-C0001-freqResponseImpedance.jpg","drawing_2d_pdf":"https:\/\/redcatt.net\/storage\/products\/downloads\/DR-15-027-8R-B2-C0001-drawing2dPdf.pdf","drawing_2d_image":"https:\/\/redcatt.net\/storage\/products\/web\/DR-15-027-8R-B2-C0001-drawing2dJpg.jpg","step_3d":"https:\/\/redcatt.net\/storage\/products\/downloads\/DR-15-027-8R-B2-C0001-step3d.step"}},{"code":"DR-12-004-8R-B2-C0001","name":"12NPM","slug":"dr-12-004-8r-b2-c0001","description":"Variant of DR-12-004","url":"https:\/\/redcatt.net\/products\/dr-12-004-8r-b2-c0001","category":"LF","type":"Mid-Woofer","size_inches":12,"is_featured":false,"general":{"nominal_impedance":"8","magnet":"Neodymium","basket_material":"Aluminum"},"power_handling":{"aes_watts":"450","continuous_watts":"900","peak_watts":"1800"},"voice_coil":{"diameter":"76","wire":"CCAW","former":"Glass Fiber","winding_height":"18.6"},"thiele_small_parameters":{"fs_hz":49,"re_ohm":4.7,"qes":0.32,"qms":9.95,"qts":0.31,"vas_liters":63.6,"sd_cm2":531,"sensitivity_db":98,"mms_grams":65.6,"rms":2.03,"cms":0.161,"bl_tm":17.3,"le_mh":0.65},"physical":{"overall_diameter_mm":315,"bolt_circle_diameter_mm":298,"baffle_cutout_diameter_mm":285,"mounting_holes":"8","depth_mm":142.5,"net_weight_kg":4.1,"xmax_mm":"4.05","xmech_mm":"14.55"},"materials":{"surround":"fabric","cone_dome":"Paper GF","spider":"Nomex"},"content":{"key_features":["Carbon fiber loaded paper cone","Very high efficiency","Lightweight mechanical structure"],"design_notes":"The 12NPM is a high efficiency, (98 dB 1watt \/ 1 meter) 12-inch mid bass woofer with incredibly linear frequency response characteristics, extreme high power handling capability while generating low harmonic distortion artifacts.-\nThe 12NPM uses a lightweight carbon fiber loaded cone assembly along with a precision double roll constant geometry surround. This combination provides remarkable strength, high efficiency and a excursion linearity of 18.2mm.\n\nMagnetic Circuit\nREDCATT engineers have developed a lightweight, inside-neodymium slug based magnetic circuit capable of delivering the highest level of performance providing a consistent, high integrity magnetic flux gap, ultra low distortion characteristic and high efficiency cooling system. The magnetic circuit design is optimized to generate the minimum amount of flux modulation, providing exceptional stability.","hero_text":null,"ai_summary":"The 12NPMX8-054 is a 12-inch mid-woofer driver designed for professional 2-way and multi-way systems requiring high sensitivity (98 dB 1W\/1m) and controlled low-frequency behavior. The motor and suspension are optimized to maintain consistent performance at high drive levels, with controlled excursion and reduced thermal compression during long-term operation.\n\nThe driver is intended for use with high-power amplification (approx. 450 W AES \/ 900 W continuous) and DSP control. A high-pass filter in the range of 28-45 Hz is recommended depending on enclosure tuning, along with proper limiting to manage thermal and mechanical stress. Typical operating bandwidth is 34-2000 Hz, covering bass through upper-mid frequencies for direct integration with a compression driver or tweeter in a two-way or multi-way system.\n\nThis design is particularly effective in single or multi-driver bass reflex systems used in professional two-way and multi-way PA systems, powered monitors, and compact bass-reflex enclosures, where extended bandwidth, controlled distortion across the full operating range, and versatile system integration are required.","recommended_enclosure":"Recommended enclosure alignments (bass reflex):\n- 55 liters tuned to 53 Hz: high output, strong mid-bass, reduced excursion; -3 dB approx. 49 Hz, HP filter 45 Hz\n- 65 liters tuned to 46 Hz: balanced response, general-purpose (recommended); -3 dB approx. 39 Hz, HP filter 36 Hz\n- 80 liters tuned to 40 Hz: extended low-frequency, requires HP filter protection; -3 dB approx. 34 Hz, HP filter 28 Hz"},"assets":{"photos":["https:\/\/redcatt.net\/storage\/products\/web\/DR-12-004-8R-B2-C0001-photo1.jpg","https:\/\/redcatt.net\/storage\/products\/web\/DR-12-004-8R-B2-C0001-photo2.jpg","https:\/\/redcatt.net\/storage\/products\/web\/DR-12-004-8R-B2-C0001-photo3.jpg","https:\/\/redcatt.net\/storage\/products\/web\/DR-12-004-8R-B2-C0001-photo4.jpg"],"freq_response_image":"https:\/\/redcatt.net\/storage\/products\/web\/DR-12-004-8R-B2-C0001-freqResponseImpedance.jpg","drawing_2d_pdf":"https:\/\/redcatt.net\/storage\/products\/downloads\/DR-12-004-8R-B2-C0001-drawing2dPdf.pdf","drawing_2d_image":"https:\/\/redcatt.net\/storage\/products\/web\/DR-12-004-8R-B2-C0001-drawing2dJpg.jpg","step_3d":"https:\/\/redcatt.net\/storage\/products\/downloads\/DR-12-004-8R-B2-C0001-step3d.step"}},{"code":"DR-12-012-4R-B2-C0001","name":"121FIND","slug":"dr-12-012-4r-b2-c0001","description":"Mid-Woofer\/12inch\/Ferrite\/Paper\/250W\/4ohm","url":"https:\/\/redcatt.net\/products\/dr-12-012-4r-b2-c0001","category":"LF","type":"Mid-Woofer","size_inches":12,"is_featured":false,"general":{"nominal_impedance":"4","magnet":"Ferrite","basket_material":"Steel"},"power_handling":{"aes_watts":"250","continuous_watts":"500","peak_watts":"1000"},"voice_coil":{"diameter":"50.8","wire":"CCAW","former":"Glass Fiber","winding_height":"11.7"},"thiele_small_parameters":{"fs_hz":59,"re_ohm":3.1,"qes":0.56,"qms":7.34,"qts":0.52,"vas_liters":59.1,"sd_cm2":531,"sensitivity_db":96.4,"mms_grams":49.1,"rms":2.48,"cms":0.15,"bl_tm":10.2,"le_mh":0.32},"physical":{"overall_diameter_mm":320,"bolt_circle_diameter_mm":302,"baffle_cutout_diameter_mm":282,"mounting_holes":"8","depth_mm":124,"net_weight_kg":4.6,"xmax_mm":"1.85","xmech_mm":"9.85"},"materials":{"surround":"fabric","cone_dome":"Paper GF","spider":"Nomex"},"content":{"key_features":["EXTENDED FREQUENCY RESPONSE","Proven cost effective design","Nomex spider, water-repellent & non-flammable paper cone"],"design_notes":"The 121FIND is a high efficiency, (96 dB 1watt\/ 1 meter) 12inch woofer with incredibly linear frequency response characteristics, high power handling capability while generating low harmonic distortion artifacts. 121FIND uses lightweight cone which movement is controlled by \u201cM\u201d shaped surround. Pistonic behavior and the long term stability\nIs supported by Nomex spider. The woofer cone is treated to withstand harsh environments and high humidity.\n\n\tThe 121FIND was design for its best use in the 2-way applications, where excellent midrange response is required. Speaker provides good low frequency extension and delivers seizable amounts of low frequencies.\n\nThe metal parts in the speaker are coated and tested to ensure extreme weatherization protection.","hero_text":null,"ai_summary":"The 121FINDX4-233 is a 12-inch ferrite pro mid-woofer designed for professional 2-way PA speaker systems, compact touring cabinets, and permanently installed enclosures crossed to a compression driver or horn. It features a weatherized glass fiber treated paper cone, M-shaped fabric surround, non-flammable Nomex spider, and coated steel basket for harsh environment and high-humidity protection. The 50.8mm CCAW voice coil on a glass fiber former is rated at 250W AES. Sensitivity is 96.4 dB (1W\/1m). With a Qts of 0.52, this driver uses a compliant suspension design suited to moderate-volume enclosures, and operates effectively in both sealed and vented configurations depending on application.\n\nThe 121FINDX4-233 handles approx. 250 W AES and 500 W continuous power into 4 ohms; two drivers wired in series present an 8-ohm load with a combined +3 dB sensitivity gain. A high-pass filter at 40-60 Hz is recommended depending on alignment. The operating bandwidth is approximately 65-843 Hz, with cone beaming onset near 843 Hz defining the practical upper limit; a crossover to a compression driver on horn at 800 Hz to 1.2 kHz is required. The very low Le of 0.32 mH keeps impedance rise minimal through the crossover region, simplifying passive network design and improving crossover accuracy compared to higher-inductance alternatives.\n\nThis driver is suited for compact single-driver vented 2-way PA touring cabinets; 2-way portable and installed PA enclosures for live sound and fixed-venue reinforcement; stage monitor wedges crossed to a compression horn at 800 Hz to 1.0 kHz; and compact sealed installed 2-way systems where a subwoofer provides low-frequency support below 80-100 Hz. The weatherized cone, fabric surround, and coated steel basket are suited to demanding outdoor and touring environments where moisture, humidity, and mechanical stress are factors.","recommended_enclosure":"Recommended enclosure alignments (bass reflex):\n- 30 liters tuned to 68 Hz: high output, strong mid-bass, reduced excursion; -3 dB approx. 63 Hz, HP filter 60 Hz\n- 35 liters tuned to 62 Hz: balanced response, general-purpose (recommended); -3 dB approx. 57 Hz, HP filter 52 Hz\n- 40 liters tuned to 56 Hz: extended low-frequency, requires HP filter protection; -3 dB approx. 48 Hz, HP filter 44 Hz"},"assets":{"photos":["https:\/\/redcatt.net\/storage\/products\/web\/DR-12-012-4R-B2-C0001-photo1.jpg","https:\/\/redcatt.net\/storage\/products\/web\/DR-12-012-4R-B2-C0001-photo2.jpg"],"freq_response_image":"https:\/\/redcatt.net\/storage\/products\/web\/DR-12-012-4R-B2-C0001-freqResponseImpedance.jpg","drawing_2d_pdf":"https:\/\/redcatt.net\/storage\/products\/downloads\/DR-12-012-4R-B2-C0001-drawing2dPdf.pdf","drawing_2d_image":"https:\/\/redcatt.net\/storage\/products\/web\/DR-12-012-4R-B2-C0001-drawing2dJpg.jpg","step_3d":"https:\/\/redcatt.net\/storage\/products\/downloads\/DR-12-012-4R-B2-C0001-step3d.step"}},{"code":"DR-12-012-8R-B2-C0001","name":"121FIND","slug":"dr-12-012-8r-b2-c0001","description":"Mid-Woofer\/12inch\/Ferrite\/Paper\/250W\/8ohm","url":"https:\/\/redcatt.net\/products\/dr-12-012-8r-b2-c0001","category":"LF","type":"Mid-Woofer","size_inches":12,"is_featured":false,"general":{"nominal_impedance":"8","magnet":"Ferrite","basket_material":"Steel"},"power_handling":{"aes_watts":"250","continuous_watts":"500","peak_watts":"1000"},"voice_coil":{"diameter":"50.8","wire":"CCAW","former":"Glass Fiber","winding_height":"15.5"},"thiele_small_parameters":{"fs_hz":63,"re_ohm":5.3,"qes":0.65,"qms":7.47,"qts":0.6,"vas_liters":49.8,"sd_cm2":531,"sensitivity_db":96.6,"mms_grams":50.8,"rms":2.69,"cms":0.13,"bl_tm":12.9,"le_mh":0.52},"physical":{"overall_diameter_mm":320,"bolt_circle_diameter_mm":302,"baffle_cutout_diameter_mm":282,"mounting_holes":"8","depth_mm":124,"net_weight_kg":4.6,"xmax_mm":"3.75","xmech_mm":"11.75"},"materials":{"surround":"fabric","cone_dome":"Paper GF","spider":"Nomex"},"content":{"key_features":["EXTENDED FREQUENCY RESPONSE","Proven cost effective design","Good power handling, nomex spider, water-repellent & non-flammable paper    cone"],"design_notes":"The 121FIND is a high efficiency, (96.5 dB 1watt\/ 1 meter) 12inch woofer with incredibly linear frequency response characteristics, high power handling capability while generating low harmonic distortion artifacts. 121FIND uses lightweight cone which movement is controlled by \u201cM\u201d shaped surround. Pistonic behavior and the long term stability\nIs supported by Nomex spider. The woofer cone is treated to withstand harsh environments and high humidity.\n\n\tThe 121FIND was design for its best use in the 2-way applications, where excellent midrange response is required. Speaker provides good low frequency extension and delivers seizable amounts of low frequencies.\n\nThe metal parts in the speaker are coated and tested to ensure extreme weatherization protection.","hero_text":null,"ai_summary":"The 121FINDX8-234 is a 12-inch ferrite pro mid-woofer designed for professional 2-way PA speaker systems, touring cabinets, and permanently installed enclosures crossed to a compression driver or horn. It shares the 121FIND platform with the 4-ohm 121FINDX4-233, featuring the same weatherized glass fiber treated paper cone, M-shaped fabric surround, non-flammable Nomex spider, and coated steel basket. The 8-ohm nominal impedance provides a standard single-driver amplifier load. Sensitivity is 96.6 dB (1W\/1m). With a Qts of 0.60, this driver uses a compliant suspension design suited to moderate-volume enclosures with extended low-frequency response; sealed enclosures are the preferred alignment for this Qts value, with vented available for higher efficiency PA applications.\n\nThe 121FINDX8-234 handles approx. 250 W AES and 500 W continuous power, delivering a peak SPL of 121 dB at 1 metre (AES). A high-pass filter at 45-80 Hz is recommended depending on alignment. Operating bandwidth is approximately 70-843 Hz, with cone beaming onset near 843 Hz defining the upper limit and a required crossover to horn at 800 Hz to 1.2 kHz. The higher Le of 0.52 mH compared to the 4ohm-233 variant makes a Zobel network (5.6 ohm \/ 18 uF) more important to flatten impedance rise through the crossover region.\n\nCompared to the 121FINDX4-233, this 8ohm variant offers twice the Xmax (3.75 mm vs 1.85 mm) and twice the volume displacement, providing substantially more bass output capability at high excursion and better suitability for standalone bass reproduction. It is suited for sealed 2-way PA and stage monitor enclosures; vented touring PA cabinets requiring deeper bass extension; and permanently installed 2-way systems in venues where standard 8-ohm amplifier matching and increased excursion headroom are required.","recommended_enclosure":"Recommended enclosure alignments (bass reflex):\n- 20 liters tuned to 72 Hz: high output, strong mid-bass, reduced excursion; -3 dB approx. 66 Hz, HP filter 64 Hz\n- 25 liters tuned to 66 Hz: balanced response, general-purpose (recommended); -3 dB approx. 61 Hz, HP filter 56 Hz\n- 30 liters tuned to 60 Hz: extended low-frequency, requires HP filter protection; -3 dB approx. 51 Hz, HP filter 48 Hz"},"assets":{"photos":["https:\/\/redcatt.net\/storage\/products\/web\/DR-12-012-8R-B2-C0001-photo1.jpg","https:\/\/redcatt.net\/storage\/products\/web\/DR-12-012-8R-B2-C0001-photo2.jpg"],"freq_response_image":null,"drawing_2d_pdf":"https:\/\/redcatt.net\/storage\/products\/downloads\/DR-12-012-8R-B2-C0001-drawing2dPdf.pdf","drawing_2d_image":"https:\/\/redcatt.net\/storage\/products\/web\/DR-12-012-8R-B2-C0001-drawing2dJpg.jpg","step_3d":"https:\/\/redcatt.net\/storage\/products\/downloads\/DR-12-012-8R-B2-C0001-step3d.step"}},{"code":"DR-12-016-8R-B2-C0001","name":"121NPM","slug":"dr-12-016-8r-b2-c0001","description":"Mid woofer\/12inch\/Neo\/Paper\/450W\/8ohm","url":"https:\/\/redcatt.net\/products\/dr-12-016-8r-b2-c0001","category":"LF","type":"Mid-Woofer","size_inches":12,"is_featured":false,"general":{"nominal_impedance":"8","magnet":"Neodymium","basket_material":"Aluminum"},"power_handling":{"aes_watts":"450","continuous_watts":"900","peak_watts":"1800"},"voice_coil":{"diameter":"76","wire":"CCAW","former":"Glass Fiber","winding_height":"13"},"thiele_small_parameters":{"fs_hz":50,"re_ohm":6,"qes":0.16,"qms":7.51,"qts":0.16,"vas_liters":59.2,"sd_cm2":531,"sensitivity_db":99.97,"mms_grams":66.7,"rms":2.79,"cms":0.15,"bl_tm":27.8,"le_mh":0.51},"physical":{"overall_diameter_mm":315,"bolt_circle_diameter_mm":298,"baffle_cutout_diameter_mm":285,"mounting_holes":"8","depth_mm":123.5,"net_weight_kg":4,"xmax_mm":"1.5","xmech_mm":"11.5"},"materials":{"surround":"fabric","cone_dome":"Paper CF","spider":"Nomex"},"content":{"key_features":["Very high efficiency mid-woofer","Linear frequency response, low harmonic distortion","Lightweight carbon fiber loaded paper cone, nomex spider"],"design_notes":"The 121NPM is a ultra high efficiency, (100dB 1watt \/ 1 meter) 12-inch mid bass woofer with incredibly linear frequency response characteristics, extreme high power handling capability while generating low harmonic distortion artifacts.-\nThe 121NPM uses a lightweight carbon fiber loaded cone assembly along with a precision double roll constant geometry surround. This combination provides remarkable strength, high efficiency and a excursion linearity of 14.2mm.\n\nMagnetic Circuit\nREDCATT engineers have developed a lightweight, neodymium outside ring based magnetic circuit capable of delivering the highest level of performance providing a consistent, high integrity magnetic flux gap, ultra low distortion characteristic and high efficiency cooling system. The magnetic circuit design is optimized to generate the minimum amount of flux modulation, providing exceptional stability.","hero_text":null,"ai_summary":"The 121NPMX8-079 is a 12-inch neodymium pro mid-woofer designed for professional high-efficiency 2-way PA speaker systems, compact touring cabinets, and permanently installed enclosures crossed to a compression driver or horn. It features a carbon fiber paper cone, double-roll constant-geometry fabric surround, Nomex spider, and a 3-inch CCAW voice coil on a glass fiber former, driven by a neodymium outside ring magnetic circuit optimized for minimum flux modulation and maximum motor linearity. Sensitivity is 99.97 dB (1W\/1m)  -  approximately 3.5 dB higher than the ferrite 121FIND variants from the same platform. With a Qts of 0.16, this driver uses a low Qts, high motor strength design optimized to maintain consistent performance at high drive levels, with controlled excursion and reduced thermal compression during long-term operation.\n\nThe 121NPMX8-079 handles approx. 450 W AES and 900 W continuous power, delivering a peak SPL of 126.5 dB at 1 metre (AES)  -  the highest of the three 12-inch variants in the 121 family, and 6 dB above the ferrite FIND models at equivalent power. A high-pass filter at 40-60 Hz is recommended depending on alignment. The operating bandwidth is approximately 55-843 Hz; cone beaming onset at 843 Hz defines the upper limit, and a crossover to a compression driver on horn at 800 Hz to 1.5 kHz is required. Third or fourth-order crossover slopes are recommended to control directivity above 843 Hz.\n\nThis driver is suited for compact high-efficiency vented 2-way PA touring cabinets where maximum SPL per cabinet weight is the design objective; permanently installed 2-way enclosures in large venues requiring high sensitivity; 2-way stage monitor wedges with horn crossover at 1.0-1.2 kHz; and line array or column system applications where high sensitivity, low distortion, and precise midrange reproduction are required. The neodymium outside ring motor and CCAW voice coil on glass fiber former provide a lightweight, high-efficiency transducer capable of sustained high-power output with minimal thermal compression.","recommended_enclosure":"Recommended enclosure alignments (bass reflex):\n- 70 liters tuned to 47 Hz: high output, strong mid-bass, reduced excursion; -3 dB approx. 40 Hz, HP filter 39 Hz\n- 85 liters tuned to 41 Hz: balanced response, general-purpose (recommended); -3 dB approx. 35 Hz, HP filter 31 Hz\n- 90 liters tuned to 38 Hz: extended low-frequency, requires HP filter protection; -3 dB approx. 32 Hz, HP filter 26 Hz"},"assets":{"photos":["https:\/\/redcatt.net\/storage\/products\/web\/DR-12-016-8R-B2-C0001-photo1.jpg","https:\/\/redcatt.net\/storage\/products\/web\/DR-12-016-8R-B2-C0001-photo2.jpg","https:\/\/redcatt.net\/storage\/products\/web\/DR-12-016-8R-B2-C0001-photo3.jpg","https:\/\/redcatt.net\/storage\/products\/web\/DR-12-016-8R-B2-C0001-photo4.jpg"],"freq_response_image":"https:\/\/redcatt.net\/storage\/products\/web\/DR-12-016-8R-B2-C0001-freqResponseImpedance.jpg","drawing_2d_pdf":"https:\/\/redcatt.net\/storage\/products\/downloads\/DR-12-016-8R-B2-C0001-drawing2dPdf.pdf","drawing_2d_image":"https:\/\/redcatt.net\/storage\/products\/web\/DR-12-016-8R-B2-C0001-drawing2dJpg.jpg","step_3d":"https:\/\/redcatt.net\/storage\/products\/downloads\/DR-12-016-8R-B2-C0001-step3d.step"}},{"code":"DR-12-017-8R-B2-C0001","name":"121XR","slug":"dr-12-017-8r-b2-c0001","description":"XR Woofer\/12inch\/Neo\/Paper\/500W\/8ohm","url":"https:\/\/redcatt.net\/products\/dr-12-017-8r-b2-c0001","category":"LF","type":"Woofer","size_inches":12,"is_featured":false,"general":{"nominal_impedance":"8","magnet":"Neodymium","basket_material":"Aluminum"},"power_handling":{"aes_watts":"500","continuous_watts":"1000","peak_watts":"2000"},"voice_coil":{"diameter":"63.5","wire":"Copper","former":"Glass Fiber","winding_height":"18.3"},"thiele_small_parameters":{"fs_hz":46,"re_ohm":5.6,"qes":0.42,"qms":1.56,"qts":0.33,"vas_liters":69.1,"sd_cm2":531,"sensitivity_db":95.78,"mms_grams":66.8,"rms":12.37,"cms":0.18,"bl_tm":16,"le_mh":0.16},"physical":{"overall_diameter_mm":320,"bolt_circle_diameter_mm":299,"baffle_cutout_diameter_mm":281,"mounting_holes":"8","depth_mm":172.5,"net_weight_kg":5.1,"xmax_mm":"6.35","xmech_mm":"29.85"},"materials":{"surround":"fabric","cone_dome":"Paper CF","spider":"Nomex"},"content":{"key_features":["EXTENDED FREQUENCY RESPONSE, high excursion, ultra low THD","Static demodulation coil, large spider with stitched tinsel wires","Carbon fiber loaded paper cone"],"design_notes":"The 121XR was designed to be simply the best driver for 2-way and multi-way systems on the market, yet this driver will also shine in sub-woofer applications. The combination of our XR patented technology with static shorting coil brings an nonparallel opportunity to the audio designers. The common request for 2-way speakers is \u201cmore of everything\u201d. Designers wishes for more bass, more mids. Well, there you have it! But not only that. We bring this with clarity in the mid-frequencies and undistorted bass. Our designers were able to achieve THD below 0.5% from 20Hz up to 2.5kHz. There isn\u2019t another driver like this on the market.\n\nMotor Design\nThe magnetic design incorporates large neodymium magnets placed along the voice coil winding, together with the 2nd and static coil placed on the pole piece. This has allowed us to push the cone excursion to 25mm peak to peak, while lowering the inductance. The shorting coil covers the complete main coil excursion. This is also an improvement compared to some previous designs on the market. Unique gap venting ensures good air circulation and greatly improves the reliability of this driver.","hero_text":null,"ai_summary":"The 121XRX8-352 is a 12-inch mid-woofer driver designed for professional 2-way and multi-way systems requiring high sensitivity (96 dB 1W\/1m) and controlled low-frequency behavior. The motor and suspension are optimized to maintain consistent performance at high drive levels, with controlled excursion and reduced thermal compression during long-term operation.\n\nThe driver is intended for use with high-power amplification (approx. 500 W AES \/ 1000 W continuous) and DSP control. A high-pass filter in the range of 27-43 Hz is recommended depending on enclosure tuning, along with proper limiting to manage thermal and mechanical stress. Typical operating bandwidth is 33-2000 Hz, covering bass through upper-mid frequencies for direct integration with a compression driver or tweeter in a two-way or multi-way system.\n\nThis design is particularly effective in single or multi-driver bass reflex systems used in professional two-way and multi-way PA systems, powered monitors, and compact bass-reflex enclosures, where extended bandwidth, controlled distortion across the full operating range, and versatile system integration are required.","recommended_enclosure":"Recommended enclosure alignments (bass reflex):\n- 55 liters tuned to 51 Hz: high output, strong mid-bass, reduced excursion; -3 dB approx. 47 Hz, HP filter 43 Hz\n- 65 liters tuned to 45 Hz: balanced response, general-purpose (recommended); -3 dB approx. 38 Hz, HP filter 35 Hz\n- 80 liters tuned to 39 Hz: extended low-frequency, requires HP filter protection; -3 dB approx. 33 Hz, HP filter 27 Hz"},"assets":{"photos":["https:\/\/redcatt.net\/storage\/products\/web\/DR-12-017-8R-B2-C0001-photo1.jpg","https:\/\/redcatt.net\/storage\/products\/web\/DR-12-017-8R-B2-C0001-photo2.jpg","https:\/\/redcatt.net\/storage\/products\/web\/DR-12-017-8R-B2-C0001-photo3.jpg"],"freq_response_image":"https:\/\/redcatt.net\/storage\/products\/web\/DR-12-017-8R-B2-C0001-freqResponseImpedance.jpg","drawing_2d_pdf":"https:\/\/redcatt.net\/storage\/products\/downloads\/DR-12-017-8R-B2-C0001-drawing2dPdf.pdf","drawing_2d_image":"https:\/\/redcatt.net\/storage\/products\/web\/DR-12-017-8R-B2-C0001-drawing2dJpg.jpg","step_3d":"https:\/\/redcatt.net\/storage\/products\/downloads\/DR-12-017-8R-B2-C0001-step3d.step"}},{"code":"DR-12-018-8R-B2-C0001","name":"122NPW","slug":"dr-12-018-8r-b2-c0001","description":"Woofer\/12inch\/Neo\/Paper\/800W\/8ohm","url":"https:\/\/redcatt.net\/products\/dr-12-018-8r-b2-c0001","category":"LF","type":"Woofer","size_inches":12,"is_featured":false,"general":{"nominal_impedance":"8","magnet":"Neodymium","basket_material":"Aluminum"},"power_handling":{"aes_watts":"800","continuous_watts":"1600","peak_watts":"3200"},"voice_coil":{"diameter":"101.6","wire":"Copper","former":"Glass Fiber","winding_height":"25.5"},"thiele_small_parameters":{"fs_hz":35,"re_ohm":5.5,"qes":0.17,"qms":6.65,"qts":0.17,"vas_liters":81.9,"sd_cm2":551,"sensitivity_db":96.88,"mms_grams":81.9,"rms":2.71,"cms":0.25,"bl_tm":27,"le_mh":1.27},"physical":{"overall_diameter_mm":322,"bolt_circle_diameter_mm":302,"baffle_cutout_diameter_mm":287,"mounting_holes":"8","depth_mm":154,"net_weight_kg":7.6,"xmax_mm":"5.75","xmech_mm":"19.75"},"materials":{"surround":"fabric","cone_dome":"Paper CF","spider":"Nomex"},"content":{"key_features":["Carbon fiber filled paper cone","Double silicone spider","High power handling"],"design_notes":"The 122NPW is a high efficiency, (97 dB 1watt \/ 1 meter) 12-inch woofer with incredibly linear frequency response characteristics, extreme high power handling capability while generating low harmonic distortion artifacts. The 122NPW uses a lightweight carbon fiber loaded cone assembly along with a high excursion triple roll constant geometry surround. This combination provides remarkable strength, high efficiency and a peak to peak maximum excursion of 19mm. Woofer features REDCATT double silicone sealed spider. \n\nPower Handling\nAt the core of the 122NPW is it\u2019s voice coil technology featuring a composite Polyimide former material capable of withstanding peak temperatures in excess of 350degC, well beyond the thermal requirements of modern professional audio systems. \n\tThe woofer cone is also extensively treated to withstand harsh environments and high humidity. Metal parts in the speaker assembly are coated for extreme weatherization protection.","hero_text":null,"ai_summary":"The 122NPWX8-102 is a 12-inch professional woofer designed for high-SPL PA, touring, and fixed installation systems operating across the 40-2000 Hz bandwidth. With a measured sensitivity of 96.88 dB (1 W\/1 m) and a 101.6 mm (4-inch) copper voice coil wound on a composite Polyimide former rated to withstand peak temperatures in excess of 350 degC, the driver delivers exceptional acoustic output per watt across continuous programme material without thermal compression. The Neodymium motor system produces a Bl of 27 T.m at a Qts of 0.17, placing it in the extreme-motor-force category of professional woofer design. This combination of high motor strength, high sensitivity, and superior thermal management makes the 122NPW a direct competitor to the most demanding 12-inch PA woofer applications in touring, theatre, and high-SPL installation markets. The carbon fiber loaded paper cone assembly is extensively treated for humidity and environmental resistance, and the double silicone sealed Nomex spider provides additional protection against contaminants in field and permanent-installation environments.\n\nThe 122NPWX8-102 requires high-power professional amplification in the 800-1600 W range into 8 ohms, with DSP-controlled signal management mandatory for all alignments. A 24 dB\/octave high-pass filter is required at 55, 40, or 35 Hz depending on alignment tuning, as the vented enclosure rapidly unloads the cone below the tuning frequency and the Qts=0.17 motor provides no passive self-limiting below resonance. Displacement-limiting and power-limiting algorithms should be included in any DSP preset for this driver. The operating bandwidth is approximately 40 Hz to 2 kHz; low-pass crossover to a compression driver or mid-high section at 1.0-1.5 kHz with a 24 dB\/octave slope is standard for two-way system designs using the 122NPW as the LF component.\n\nThe 122NPWX8-102 is suited for: compact and mid-size touring PA enclosures requiring maximum SPL from a 12-inch footprint; two-way professional speaker systems for live sound reinforcement, houses of worship, theatre, and stadium installation; line array bass extension and mid-bass column modules; club and venue main speaker systems operating at continuous high power levels; and cinema LF speaker assemblies where programme-consistent output, thermal durability, and motor linearity across the operating band are required. Its 96.88 dB sensitivity, 800 W AES power handling, and Neodymium motor with Polyimide former represent the specification combination typical of reference-class professional 12-inch woofer designs for mid-to-large-scale sound reinforcement applications.","recommended_enclosure":"Recommended enclosure alignments (bass reflex):\n- 70 liters tuned to 38 Hz: high output, strong mid-bass, reduced excursion; -3 dB approx. 35 Hz, HP filter 30 Hz\n- 90 liters tuned to 33 Hz: balanced response, general-purpose (recommended); -3 dB approx. 28 Hz, HP filter 23 Hz\n- 90 liters tuned to 31 Hz: extended low-frequency, requires HP filter protection; -3 dB approx. 26 Hz, HP filter 20 Hz"},"assets":{"photos":["https:\/\/redcatt.net\/storage\/products\/web\/DR-12-018-8R-B2-C0001-photo1.jpg","https:\/\/redcatt.net\/storage\/products\/web\/DR-12-018-8R-B2-C0001-photo2.jpg","https:\/\/redcatt.net\/storage\/products\/web\/DR-12-018-8R-B2-C0001-photo3.jpg","https:\/\/redcatt.net\/storage\/products\/web\/DR-12-018-8R-B2-C0001-photo4.jpg"],"freq_response_image":"https:\/\/redcatt.net\/storage\/products\/web\/DR-12-018-8R-B2-C0001-freqResponseImpedance.jpg","drawing_2d_pdf":"https:\/\/redcatt.net\/storage\/products\/downloads\/DR-12-018-8R-B2-C0001-drawing2dPdf.pdf","drawing_2d_image":"https:\/\/redcatt.net\/storage\/products\/web\/DR-12-018-8R-B2-C0001-drawing2dJpg.jpg","step_3d":"https:\/\/redcatt.net\/storage\/products\/downloads\/DR-12-018-8R-B2-C0001-step3d.step"}},{"code":"DR-12-020-4R-B2-C0001","name":"123FPM","slug":"dr-12-020-4r-b2-c0001","description":"Mid-woofer\/12inch\/Ferrite\/Paper\/300W\/4ohm","url":"https:\/\/redcatt.net\/products\/dr-12-020-4r-b2-c0001","category":"LF","type":"Mid-Woofer","size_inches":12,"is_featured":false,"general":{"nominal_impedance":"4","magnet":"Ferrite","basket_material":"Steel"},"power_handling":{"aes_watts":"300","continuous_watts":"600","peak_watts":"1200"},"voice_coil":{"diameter":"63.5","wire":"CCAW","former":"Glass Fiber","winding_height":"13.5"},"thiele_small_parameters":{"fs_hz":45,"re_ohm":3.1,"qes":0.29,"qms":4.96,"qts":0.27,"vas_liters":98.5,"sd_cm2":531,"sensitivity_db":97.75,"mms_grams":52.1,"rms":2.97,"cms":0.24,"bl_tm":12.8,"le_mh":0.42},"physical":{"overall_diameter_mm":320,"bolt_circle_diameter_mm":302,"baffle_cutout_diameter_mm":282,"mounting_holes":"8","depth_mm":127.8,"net_weight_kg":5,"xmax_mm":"2.75","xmech_mm":"10.75"},"materials":{"surround":"fabric","cone_dome":"Paper GF","spider":"Nomex"},"content":{"key_features":["EXTENDED FREQUENCY RESPONSE","Rib reinforced paper cone","High power handling"],"design_notes":"The 123FPM is a high efficiency, (98 dB 1watt \/ 1 meter) 12-inch mid bass woofer with incredibly linear frequency response characteristics. The 123FPM uses a lightweight rib-reinforced cone assembly along with a precision double roll constant geometry surround. This combination provides remarkable strength, high efficiency and a excursion linearity of 10.2mm.\n\n\nMagnetic Circuit\nREDCATT engineers have developed a lightweight, inside-neodymium slug based magnetic circuit capable of delivering the highest level of performance providing a consistent, high integrity magnetic flux gap, ultra low distortion characteristic and high efficiency cooling system. The magnetic circuit design is optimized to generate the minimum amount of flux modulation, providing exceptional stability.","hero_text":null,"ai_summary":"The 123FPMX4-188B is a 12-inch mid-woofer driver designed for professional 2-way and multi-way systems requiring high sensitivity (98 dB 1W\/1m) and controlled low-frequency behavior. The motor and suspension are optimized to maintain consistent performance at high drive levels, with controlled excursion and reduced thermal compression during long-term operation.\n\nThe driver is intended for use with high-power amplification (approx. 300 W AES \/ 600 W continuous) and DSP control. A high-pass filter in the range of 31-44 Hz is recommended depending on enclosure tuning, along with proper limiting to manage thermal and mechanical stress. Typical operating bandwidth is 37-2000 Hz, covering bass through upper-mid frequencies for direct integration with a compression driver or tweeter in a two-way or multi-way system.\n\nThis design is particularly effective in single or multi-driver bass reflex systems used in professional two-way and multi-way PA systems, powered monitors, and compact bass-reflex enclosures, where extended bandwidth, controlled distortion across the full operating range, and versatile system integration are required.","recommended_enclosure":"Recommended enclosure alignments (bass reflex):\n- 70 liters tuned to 52 Hz: high output, strong mid-bass, reduced excursion; -3 dB approx. 48 Hz, HP filter 44 Hz\n- 90 liters tuned to 46 Hz: balanced response, general-purpose (recommended); -3 dB approx. 42 Hz, HP filter 36 Hz\n- 90 liters tuned to 43 Hz: extended low-frequency, requires HP filter protection; -3 dB approx. 37 Hz, HP filter 31 Hz"},"assets":{"photos":["https:\/\/redcatt.net\/storage\/products\/web\/DR-12-020-4R-B2-C0001-photo1.jpg","https:\/\/redcatt.net\/storage\/products\/web\/DR-12-020-4R-B2-C0001-photo2.jpg","https:\/\/redcatt.net\/storage\/products\/web\/DR-12-020-4R-B2-C0001-photo3.jpg"],"freq_response_image":"https:\/\/redcatt.net\/storage\/products\/web\/DR-12-020-4R-B2-C0001-freqResponseImpedance.jpg","drawing_2d_pdf":"https:\/\/redcatt.net\/storage\/products\/downloads\/DR-12-020-4R-B2-C0001-drawing2dPdf.pdf","drawing_2d_image":"https:\/\/redcatt.net\/storage\/products\/web\/DR-12-020-4R-B2-C0001-drawing2dJpg.jpg","step_3d":"https:\/\/redcatt.net\/storage\/products\/downloads\/DR-12-020-4R-B2-C0001-step3d.step"}},{"code":"DR-12-021-8R-B2-C0001","name":"123NPM","slug":"dr-12-021-8r-b2-c0001","description":"Mid-Woofer\/12inch\/Neo\/Paper\/800W\/8ohm","url":"https:\/\/redcatt.net\/products\/dr-12-021-8r-b2-c0001","category":"LF","type":"Mid-Woofer","size_inches":12,"is_featured":false,"general":{"nominal_impedance":"8","magnet":"Neodymium","basket_material":"Aluminum"},"power_handling":{"aes_watts":"800","continuous_watts":"1600","peak_watts":"3200"},"voice_coil":{"diameter":"101.6","wire":null,"former":"TIL","winding_height":"23"},"thiele_small_parameters":{"fs_hz":58,"re_ohm":4.7,"qes":0.45,"qms":12.6,"qts":0.43,"vas_liters":31.6,"sd_cm2":551,"sensitivity_db":95.82,"mms_grams":100,"rms":2.89,"cms":0.0753,"bl_tm":19.6,"le_mh":0.71},"physical":{"overall_diameter_mm":320.35,"bolt_circle_diameter_mm":299,"baffle_cutout_diameter_mm":281.9,"mounting_holes":"8","depth_mm":140.5,"net_weight_kg":6.2,"xmax_mm":"5.25","xmech_mm":"17.75"},"materials":{"surround":"fabric","cone_dome":"Paper GF","spider":"Nomex"},"content":{"key_features":["High sensitivity, EXTENDED FREQUENCY RESPONSE","3 demodulation rings, powerful motor structure, dual air-gap","High power handling"],"design_notes":"The 123NPM is a truly unique full range woofer. We have designed cutting edge product, using the best avail-able materials and highly optimized design for the best performance in its class. It delivers very high efficiency, (96 dB 1watt \/ 1 meter), incredibly linear frequency response characteristics with extended HF frequency response, extreme high power handling capability, while generating ultra low harmonic distortion artifacts. The 123NPM uses a lightweight carbon fiber loaded cone assembly along with a high excursion triple roll constant geometry surround. This combination provides remarkable strength, high efficiency and a peak to peak linear excursion of 21mm.\n\nMagnetic Circuit\nThe magnetic circuit features two aluminum shorting rings, double air-gap front plate. The cooling system and the air flow has been designed using the modern FEM techniques and further optimized to provide the highest levels of cooling efficiency. The magnetic circuit design is optimized to generate the minimum amount of flux modulation, providing exceptional stability.","hero_text":null,"ai_summary":"The 123NPMX8-185 is a 12-inch mid-woofer driver designed for professional 2-way and multi-way systems requiring high sensitivity (96 dB 1W\/1m) and controlled low-frequency behavior. The driver uses a balanced motor-suspension design that provides good cone control while maintaining usable output across its operating bandwidth.\n\nThe driver is intended for use with high-power amplification (approx. 800 W AES \/ 1600 W continuous) and DSP control. A high-pass filter in the range of 35-58 Hz is recommended depending on enclosure tuning, along with proper limiting to manage thermal and mechanical stress. Typical operating bandwidth is 40-2000 Hz, covering bass through upper-mid frequencies for direct integration with a compression driver or tweeter in a two-way or multi-way system.\n\nThis design is particularly effective in single or multi-driver bass reflex systems used in professional two-way and multi-way PA systems, powered monitors, and compact bass-reflex enclosures, where extended bandwidth, controlled distortion across the full operating range, and versatile system integration are required.","recommended_enclosure":"Recommended enclosure alignments (bass reflex):\n- 20 liters tuned to 67 Hz: high output, strong mid-bass, reduced excursion; -3 dB approx. 62 Hz, HP filter 59 Hz\n- 25 liters tuned to 61 Hz: balanced response, general-purpose (recommended); -3 dB approx. 56 Hz, HP filter 51 Hz\n- 30 liters tuned to 55 Hz: extended low-frequency, requires HP filter protection; -3 dB approx. 47 Hz, HP filter 43 Hz"},"assets":{"photos":["https:\/\/redcatt.net\/storage\/products\/web\/DR-12-021-8R-B2-C0001-photo1.jpg","https:\/\/redcatt.net\/storage\/products\/web\/DR-12-021-8R-B2-C0001-photo2.jpg","https:\/\/redcatt.net\/storage\/products\/web\/DR-12-021-8R-B2-C0001-photo3.jpg","https:\/\/redcatt.net\/storage\/products\/web\/DR-12-021-8R-B2-C0001-photo4.jpg"],"freq_response_image":"https:\/\/redcatt.net\/storage\/products\/web\/DR-12-021-8R-B2-C0001-freqResponseImpedance.jpg","drawing_2d_pdf":"https:\/\/redcatt.net\/storage\/products\/downloads\/DR-12-021-8R-B2-C0001-drawing2dPdf.pdf","drawing_2d_image":"https:\/\/redcatt.net\/storage\/products\/web\/DR-12-021-8R-B2-C0001-drawing2dJpg.jpg","step_3d":"https:\/\/redcatt.net\/storage\/products\/downloads\/DR-12-021-8R-B2-C0001-step3d.step"}},{"code":"DR-12-026-8R-B2-C0001","name":"125FPM","slug":"dr-12-026-8r-b2-c0001","description":"Mid-woofer\/12inch\/Ferrite\/Paper\/300W\/8ohm","url":"https:\/\/redcatt.net\/products\/dr-12-026-8r-b2-c0001","category":"LF","type":"Mid-Woofer","size_inches":12,"is_featured":false,"general":{"nominal_impedance":"8","magnet":"Ferrite","basket_material":"Aluminum"},"power_handling":{"aes_watts":"300","continuous_watts":"600","peak_watts":"1200"},"voice_coil":{"diameter":"76","wire":"CCAW","former":"Glass Fiber","winding_height":"15.1"},"thiele_small_parameters":{"fs_hz":63,"re_ohm":4.5,"qes":0.33,"qms":7.13,"qts":0.31,"vas_liters":48.1,"sd_cm2":531,"sensitivity_db":100,"mms_grams":53.2,"rms":2.95,"cms":0.12,"bl_tm":17.2,"le_mh":0.64},"physical":{"overall_diameter_mm":311,"bolt_circle_diameter_mm":295,"baffle_cutout_diameter_mm":282,"mounting_holes":"8","depth_mm":127.3,"net_weight_kg":7,"xmax_mm":"2.55","xmech_mm":"12.55"},"materials":{"surround":"fabric","cone_dome":"Paper CF","spider":"Nomex"},"content":{"key_features":["EXTENDED FREQUENCY RESPONSE","Good power handling, nomex spider, water-repellent & non-flammable paper    cone"],"design_notes":"The 125FPM is a high efficiency, (97.6 dB 1watt\/ 1 meter) 12inch woofer with incredibly linear frequency response characteristics, high power handling capability while generating low harmonic distortion artifacts. 125FPM uses lightweight and reinforced cone which movement is controlled by \u201cM\u201d shaped surround. The woofer cone is treated to withstand harsh environments and high humidity.\n\n\tThe 125FPM was design for its best use in the 2-way applications, where excellent midrange response is required. Speaker provides good low frequency extension and delivers seizable amounts of low frequencies.\n\nThe metal parts in the speaker are coated and tested to ensure extreme weatherization protection.","hero_text":null,"ai_summary":"The 125FPMX8-187 is a 12-inch professional mid-woofer built around a ferrite magnetic circuit with a 76mm CCAW voice coil wound on a glass fiber former and a carbon fiber reinforced paper cone treated for weather resistance, high humidity, and extended outdoor use. The M-shaped constant-geometry fabric surround and Nomex spider provide precise mechanical control across the operating band, while the aluminum basket supports structural rigidity in both permanently installed and portable professional enclosures. Sensitivity is 97.65 dB (1W\/1m) \/ 100.0 dB (2.83V\/1m) with a Bl of 17.2 T.m, supporting 300W AES \/ 600W continuous power handling. Qts = 0.31 reflects a low Qts, high motor strength design optimized to maintain consistent performance at high drive levels, with controlled excursion and reduced thermal compression during long-term operation.\n\n- 15 L \/ 68 Hz  -  compact monitor or stage wedge; port ~137 mm physical; 13.1 m\/s\n  - 20 L \/ 60 Hz  -  standard general-purpose 2-way PA; port ~130 mm physical; 11.6 m\/s\n  - 28 L \/ 52 Hz  -  extended low-frequency; port ~121 mm physical; 10.0 m\/s\n\nAmplification of 300-600W from an 8ohm-rated power amplifier is appropriate, delivering a peak SPL of 122.4 dB at 1 metre (AES rating). A subsonic high-pass filter at the cabinet tuning frequency is mandatory given the 2.55mm Xmax  -  excursion rises steeply below the port tuning frequency and unprotected operation risks mechanical damage. Crossover to a compression driver or horn at 800-1000 Hz is required; cone beaming onset occurs at approximately 842 Hz and inductance rolloff begins at 1,119 Hz. Third or fourth-order crossover slopes are recommended to maintain controlled directivity above 842 Hz. A Zobel network (4.5ohm series with 31.6 uF, placed across the driver terminals) is recommended for passive crossover designs to compensate for voice coil inductance rise.\n\nThe 125FPMX8-187 is suited for compact vented 2-way PA enclosures requiring environmental durability and weather resistance; permanently installed systems in outdoor venues, arenas, and harsh-environment applications where humidity and temperature cycling would degrade standard paper-cone drivers; stage monitor wedges crossed to a compression driver or horn at 1.0 kHz; and portable PA systems requiring a combination of high sensitivity, controlled power handling, and extended service life in demanding conditions.","recommended_enclosure":"Recommended enclosure alignments (bass reflex):\n- 45 liters tuned to 68 Hz: high output, strong mid-bass, reduced excursion; -3 dB approx. 63 Hz, HP filter 60 Hz\n- 50 liters tuned to 59 Hz: balanced response, general-purpose (recommended); -3 dB approx. 50 Hz, HP filter 49 Hz\n- 60 liters tuned to 52 Hz: extended low-frequency, requires HP filter protection; -3 dB approx. 44 Hz, HP filter 40 Hz"},"assets":{"photos":["https:\/\/redcatt.net\/storage\/products\/web\/DR-12-026-8R-B2-C0001-photo1.jpg","https:\/\/redcatt.net\/storage\/products\/web\/DR-12-026-8R-B2-C0001-photo2.jpg","https:\/\/redcatt.net\/storage\/products\/web\/DR-12-026-8R-B2-C0001-photo3.jpg"],"freq_response_image":"https:\/\/redcatt.net\/storage\/products\/web\/DR-12-026-8R-B2-C0001-freqResponseImpedance.jpg","drawing_2d_pdf":"https:\/\/redcatt.net\/storage\/products\/downloads\/DR-12-026-8R-B2-C0001-drawing2dPdf.pdf","drawing_2d_image":"https:\/\/redcatt.net\/storage\/products\/web\/DR-12-026-8R-B2-C0001-drawing2dJpg.jpg","step_3d":"https:\/\/redcatt.net\/storage\/products\/downloads\/DR-12-026-8R-B2-C0001-step3d.step"}},{"code":"DR-12-043-8R-B2-C0001","name":"12XR","slug":"dr-12-043-8r-b2-c0001","description":"XR Sub-Woofer\/12inch\/Neo\/Paper\/500W\/8ohm","url":"https:\/\/redcatt.net\/products\/dr-12-043-8r-b2-c0001","category":"LF","type":"Sub-woofer","size_inches":12,"is_featured":false,"general":{"nominal_impedance":"8","magnet":"Neodymium","basket_material":"Aluminum"},"power_handling":{"aes_watts":"500","continuous_watts":"1000","peak_watts":"2000"},"voice_coil":{"diameter":"63.5","wire":"Copper","former":"Glass Fiber","winding_height":"12.6"},"thiele_small_parameters":{"fs_hz":35,"re_ohm":5.7,"qes":0.73,"qms":10.5,"qts":0.68,"vas_liters":89.7,"sd_cm2":531,"sensitivity_db":90.95,"mms_grams":88.3,"rms":1.85,"cms":0.23,"bl_tm":12.3,"le_mh":0.24},"physical":{"overall_diameter_mm":320,"bolt_circle_diameter_mm":299,"baffle_cutout_diameter_mm":281,"mounting_holes":"8","depth_mm":172.5,"net_weight_kg":5.7,"xmax_mm":"9.2","xmech_mm":"32.7"},"materials":{"surround":"NBR","cone_dome":"Paper CF","spider":"Nomex"},"content":{"key_features":["Very high cone excursion, with very low THD","Capable to handle very low frequencies","High power handling, copper cap, stitched tinsel wires"],"design_notes":"The 12XR was designed around our new approach to the magnetic system. Our XR series speaker motors were designed so the voice coil winding doesn\u2019t leave the gap for most of the cone excursion. The desired cone excursion is carefully evaluated and incorporated into the design. The 12XR allows the designer to design sub-woofers with very large cone excursions, without the otherwise present harmonic distortion due to the voice coil leaving the magnetic gap. If you like the sound of a clean, undistorted bass, then the 12XR is the right transducer for your application. \n\nMotor Design\nThe magnetic design incorporates large neodymium magnets placed along the voice coil winding. This has allowed us to push the cone excursion to 28mm peak to peak. Unique gap venting ensures good air circulation and greatly improves the reliability of this driver. We have also developed a new technique for manufacturing deep copper caps. \n \nThe design further sports a large spider on top of which is hot-pressed tinsel wires. Cone is carbon fiber reinforced, with a lightweight foamed rubber surround. The suspension was designed for large excursions.","hero_text":null,"ai_summary":"The 12XRX8-270 is a 12-inch sub-woofer and bass driver rated at 500 W AES (1000 W continuous) into a nominal 8-ohm impedance, built around the XR (eXtended Range) radial neodymium motor system. Large neodymium magnets are positioned along the voice coil winding so the entire coil remains within the magnetic field throughout the rated excursion, minimizing harmonic distortion associated with coil-to-gap overhang at high drive levels. A deep copper cap reduces voice coil inductance to 0.24 mH, extending frequency response and lowering inductance-modulation distortion without the use of a static shorting coil. The high Qms (10.5) indicates a near-lossless suspension in which system damping is governed primarily by the amplifier and enclosure.\n\nThe driver is rated for amplification of approx. 500 W AES (1000 W continuous) into 8 ohms, with a recommended high-pass filter in the 22-33 Hz range for vented alignments depending on tuning. Active sealed systems benefit from DSP shelf correction below 50 Hz, with excursion limiting applied below 25 Hz. The 8-ohm impedance suits bridged amplifier configurations, and the low inductance (0.24 mH) enables clean integration at crossover frequencies up to approximately 500 Hz, making the driver suitable as a bass driver in multi-way speaker systems.\n\nThe 12XRX8-270 is intended for dedicated hi-fi subwoofer enclosures, 2.1 and multi-channel home theater systems, large 2-way or 3-way floorstanding loudspeakers, and studio reference monitoring applications where the XR motor's extended linear excursion, the CF paper cone's rigidity, and the low voice coil inductance combine to deliver accurate, low-distortion bass reproduction.","recommended_enclosure":"Recommended enclosure alignments (bass reflex):\n- 30 liters tuned to 40 Hz: high output, strong mid-bass, reduced excursion; -3 dB approx. 37 Hz, HP filter 32 Hz\n- 35 liters tuned to 37 Hz: balanced response, general-purpose (recommended); -3 dB approx. 34 Hz, HP filter 27 Hz\n- 40 liters tuned to 33 Hz: extended low-frequency, requires HP filter protection; -3 dB approx. 28 Hz, HP filter 21 Hz"},"assets":{"photos":["https:\/\/redcatt.net\/storage\/products\/web\/DR-12-043-8R-B2-C0001-photo1.jpg","https:\/\/redcatt.net\/storage\/products\/web\/DR-12-043-8R-B2-C0001-photo2.jpg"],"freq_response_image":"https:\/\/redcatt.net\/storage\/products\/web\/DR-12-043-8R-B2-C0001-freqResponseImpedance.jpg","drawing_2d_pdf":"https:\/\/redcatt.net\/storage\/products\/downloads\/DR-12-043-8R-B2-C0001-drawing2dPdf.pdf","drawing_2d_image":"https:\/\/redcatt.net\/storage\/products\/web\/DR-12-043-8R-B2-C0001-drawing2dJpg.jpg","step_3d":"https:\/\/redcatt.net\/storage\/products\/downloads\/DR-12-043-8R-B2-C0001-step3d.step"}},{"code":"DR-12-047-4R-B2-C0001","name":"Twiggy12","slug":"dr-12-047-4r-b2-c0001","description":"Slim Sub\/12inch\/Ferrite\/Honeycomb\/200W\/4ohm","url":"https:\/\/redcatt.net\/products\/dr-12-047-4r-b2-c0001","category":"LF","type":"Sub-woofer","size_inches":12,"is_featured":true,"general":{"nominal_impedance":"4","magnet":"Ferrite","basket_material":"Steel"},"power_handling":{"aes_watts":"200","continuous_watts":"400","peak_watts":"800"},"voice_coil":{"diameter":"76","wire":"CCAW","former":"Glass Fiber","winding_height":"26.5"},"thiele_small_parameters":{"fs_hz":30,"re_ohm":3.6,"qes":1.16,"qms":16,"qts":1.08,"vas_liters":59.8,"sd_cm2":506.7,"sensitivity_db":84.2,"mms_grams":160.7,"rms":1.9,"cms":0.175,"bl_tm":9.9,"le_mh":1},"physical":{"overall_diameter_mm":323,"bolt_circle_diameter_mm":305,"baffle_cutout_diameter_mm":293.5,"mounting_holes":"8","depth_mm":73.7,"net_weight_kg":5.1,"xmax_mm":"9.25","xmech_mm":"17.25"},"materials":{"surround":"NBR","cone_dome":"GF Honey Comb","spider":"Nomex"},"content":{"key_features":["Shallow, yet high cone excursion","Honeycomb cone","Ideal for 4x4\" wall subwoofer, car underseat subwoofers"],"design_notes":"The ultimate in shallow depth woofer design! We created this powerhouse of a speaker with limited spaces in mind, allowing you to fit it into the most compact areas while still delivering massive low frequencies. The extreme shallowness of the Twiggy 12 opens up a world of possibilities, allowing designers to craft enclosures that seamlessly integrate into typical 4x4\" wall structures, under vehicle seats, beneath sofas, and more.\nBut don't be fooled by its shallow design \u2013 the cone excursion approaches an impressive 22.4mm peak to peak, ensuring that this woofer will deliver sizable amounts of low frequencies without compromising on performance. The cone is constructed with a honeycomb structure and layers of woven glass fibers, adding not only to its strength but also to the overall rigidity and performance.\nOur patented design guarantees that the depth versus cone excursion ratio is the best available in the market, ensuring optimal sound quality in any installation. The unique magnetic structure of the Twiggy 12 delivers a high-strength B field with minimal distortion artifacts, further enhancing the audio experience.\nTo top it off, this little powerhouse can handle up to 800 watts of peak power amplification, making it the go-to choice for delivering excelent sound experience.","hero_text":null,"ai_summary":"The Twiggy12X4-470A is a 12-inch sub-woofer driver designed for hi-fi subwoofer systems, home theater, in-wall and under-seat installations, and similar domestic or automotive applications. It operates at 84.2 dB sensitivity (1W\/1m). The driver features a compliant suspension design suited to moderate-volume enclosures with extended low-frequency response.\n\nThe driver is intended for use with moderate amplification (approx. 200 W AES \/ 400 W continuous) and DSP control. A high-pass filter set at approximately 50 Hz is recommended to protect the driver below its usable range. Typical operating bandwidth is 60-100 Hz, making it suitable for integration with a mid-bass or full-range system.\n\nThis design is particularly effective in sealed enclosure systems used in hi-fi subwoofer systems, home theater, in-wall installations, automotive, and under-seat applications, where low-frequency extension and compact form factor are prioritized over high acoustic efficiency.","recommended_enclosure":"Recommended enclosure alignments (bass reflex):\n- 20 liters tuned to 34 Hz: high output, strong mid-bass, reduced excursion; -3 dB approx. 31 Hz, HP filter 26 Hz\n- 25 liters tuned to 32 Hz: balanced response, general-purpose (recommended); -3 dB approx. 29 Hz, HP filter 22 Hz\n- 30 liters tuned to 28 Hz: extended low-frequency, requires HP filter protection; -3 dB approx. 24 Hz, HP filter 20 Hz"},"assets":{"photos":["https:\/\/redcatt.net\/storage\/products\/web\/DR-12-047-4R-B2-C0001-photo1.jpg","https:\/\/redcatt.net\/storage\/products\/web\/DR-12-047-4R-B2-C0001-photo2.jpg","https:\/\/redcatt.net\/storage\/products\/web\/DR-12-047-4R-B2-C0001-photo3.jpg","https:\/\/redcatt.net\/storage\/products\/web\/DR-12-047-4R-B2-C0001-photo4.jpg","https:\/\/redcatt.net\/storage\/products\/web\/DR-12-047-4R-B2-C0001-photo5.png"],"freq_response_image":"https:\/\/redcatt.net\/storage\/products\/web\/DR-12-047-4R-B2-C0001-freqResponseImpedance.jpg","drawing_2d_pdf":"https:\/\/redcatt.net\/storage\/products\/downloads\/DR-12-047-4R-B2-C0001-drawing2dPdf.pdf","drawing_2d_image":"https:\/\/redcatt.net\/storage\/products\/web\/DR-12-047-4R-B2-C0001-drawing2dJpg.jpg","step_3d":"https:\/\/redcatt.net\/storage\/products\/downloads\/DR-12-047-4R-B2-C0001-step3d.step"}},{"code":"DR-10-005-8R-B2-C0001","name":"10INOF","slug":"dr-10-005-8r-b2-c0001","description":"Woofer\/10inch\/Ferrite\/Paper\/250W\/8ohm","url":"https:\/\/redcatt.net\/products\/dr-10-005-8r-b2-c0001","category":"LF","type":"Mid-Woofer","size_inches":10,"is_featured":false,"general":{"nominal_impedance":"8","magnet":"Ferrite","basket_material":"Steel"},"power_handling":{"aes_watts":"250","continuous_watts":"500","peak_watts":"1000"},"voice_coil":{"diameter":"63.5","wire":"Copper","former":"TIL","winding_height":"16.1"},"thiele_small_parameters":{"fs_hz":56.2,"re_ohm":7.2,"qes":0.32,"qms":3.66,"qts":0.29,"vas_liters":32.75,"sd_cm2":349,"sensitivity_db":95,"mms_grams":42.38,"rms":4.09,"cms":0.19,"bl_tm":18.2,"le_mh":0.7},"physical":{"overall_diameter_mm":256,"bolt_circle_diameter_mm":246.5,"baffle_cutout_diameter_mm":228.5,"mounting_holes":"8","depth_mm":109.5,"net_weight_kg":4.5,"xmax_mm":"4.05","xmech_mm":"12.05"},"materials":{"surround":"fabric","cone_dome":"Paper CF","spider":"Nomex"},"content":{"key_features":null,"design_notes":null,"hero_text":null,"ai_summary":"The 103FINDX8-583B is a 10-inch ferrite mid-woofer designed for professional 2-way PA speaker systems, compact touring cabinets, and permanent installation enclosures crossed to a compression driver or horn. It features a carbon fiber paper cone, fabric surround, Nomex spider, and a 63.5mm copper voice coil on a Titanium Imide Laminate (TIL) former, providing high thermal stability for sustained high-power operation. Sensitivity is 95 dB (1W\/1m). With a Qts of 0.29, this driver uses a low Qts, high motor strength design optimized to maintain consistent performance at high drive levels, with controlled excursion and reduced thermal compression during long-term operation.\n\nThe 103FINDX8-583B handles approx. 250 W AES and 500 W continuous power, with a peak SPL of 119 dB at 1 metre (AES) and 122 dB at continuous rated power. A high-pass filter in the 45-60 Hz range is recommended depending on alignment. The operating bandwidth is approximately 65-1,000 Hz, with cone beaming onset near 1,039 Hz and inductance rolloff near 1,637 Hz; a crossover to a compression driver on horn at 800 Hz to 1.5 kHz is required. Third or fourth-order crossover slopes are recommended to control directivity above 1,039 Hz.\n\nThis driver is suited for compact single-driver vented 2-way PA touring cabinets; 2-way portable and installed PA enclosures for live sound and fixed venue reinforcement; stage monitor wedges crossed to a compression horn at 1 kHz; and installed permanent-mount 2-way enclosures in venues where a dedicated subwoofer is available. The high motor strength, TIL former, Nomex spider, and fabric surround prioritize consistent output and thermal reliability during sustained high-power operation.","recommended_enclosure":"Recommended enclosure alignments (bass reflex):\n- 30 liters tuned to 59 Hz: high output, strong mid-bass, reduced excursion; -3 dB approx. 54 Hz, HP filter 51 Hz\n- 35 liters tuned to 51 Hz: balanced response, general-purpose (recommended); -3 dB approx. 43 Hz, HP filter 41 Hz\n- 45 liters tuned to 45 Hz: extended low-frequency, requires HP filter protection; -3 dB approx. 38 Hz, HP filter 33 Hz"},"assets":{"photos":["https:\/\/redcatt.net\/storage\/products\/web\/DR-10-005-8R-B2-C0001-photo1.jpg","https:\/\/redcatt.net\/storage\/products\/web\/DR-10-005-8R-B2-C0001-photo2.jpg","https:\/\/redcatt.net\/storage\/products\/web\/DR-10-005-8R-B2-C0001-photo3.jpg"],"freq_response_image":null,"drawing_2d_pdf":"https:\/\/redcatt.net\/storage\/products\/downloads\/DR-10-005-8R-B2-C0001-drawing2dPdf.pdf","drawing_2d_image":"https:\/\/redcatt.net\/storage\/products\/web\/DR-10-005-8R-B2-C0001-drawing2dJpg.jpg","step_3d":"https:\/\/redcatt.net\/storage\/products\/downloads\/DR-10-005-8R-B2-C0001-step3d.step"}},{"code":"DR-10-006-8R-B2-C0001","name":"101FHW","slug":"dr-10-006-8r-b2-c0001","description":"Subwoofer\/10inch\/Ferrite\/Paper\/200W\/8ohm","url":"https:\/\/redcatt.net\/products\/dr-10-006-8r-b2-c0001","category":"LF","type":"Sub-woofer","size_inches":10,"is_featured":false,"general":{"nominal_impedance":"8","magnet":"Ferrite","basket_material":"Aluminum"},"power_handling":{"aes_watts":"200","continuous_watts":"400","peak_watts":"800"},"voice_coil":{"diameter":"50.8","wire":"Copper","former":"Aluminum","winding_height":"32.3"},"thiele_small_parameters":{"fs_hz":25,"re_ohm":5.8,"qes":0.43,"qms":1.76,"qts":0.34,"vas_liters":73.3,"sd_cm2":363,"sensitivity_db":87,"mms_grams":100.2,"rms":8.94,"cms":0.4,"bl_tm":14.6,"le_mh":0.63},"physical":{"overall_diameter_mm":269,"bolt_circle_diameter_mm":257,"baffle_cutout_diameter_mm":238,"mounting_holes":"8","depth_mm":123,"net_weight_kg":6,"xmax_mm":"12.15","xmech_mm":"20.15"},"materials":{"surround":"NBR","cone_dome":"Paper GF","spider":"Nomex"},"content":{"key_features":["FIBER REINFORCED PAPER CONE","TWO DEMODULATION RINGS","OPTMIZED AIR VENTILATION"],"design_notes":"Introducing the 101FHW: the latest iteration of our award-winning 10FHW woofer model. This high-efficiency 10-inch subwoofer delivers an impressive 87dB sensitivity (1 watt \/ 1 meter), offering extended low-frequency response and robust power handling capabilities.\n\nCrafted with a fiber-reinforced paper cone assembly and a single roll rubber surround, the 101FHW is built for durability and performance. Its Nomex spider, featuring stitched tinsel wires, ensures long-lasting reliability even in high-powered applications. Enhanced back plate space and additional venting have been integrated to optimize power handling and cooling, making this woofer truly exceptional.\n\nThe carefully selected materials provide remarkable strength, high efficiency, and sustained output under extreme conditions.\n\nOn the magnetic front, our REDCATT engineers have designed a cutting-edge ferrite-based magnetic circuit that sets a new standard for performance. This innovative design features a consistent, high-integrity magnetic flux gap, ultra-low distortion characteristics, and an efficient cooling system. With integrated aluminum shorting rings, the magnetic circuit minimizes flux modulation, ensuring exceptional stability and reliability.\n\nExperience the power and precision of the 101FHW\u2014where cutting-edge technology meets outstanding performance.","hero_text":null,"ai_summary":"The 101FHWX8-118D is a 10-inch hi-fi subwoofer driver rated at 200 W AES (400 W continuous) with a nominal 8-ohm impedance, designed for high-fidelity home audio, studio monitoring, and active bass management systems. Featuring a ferrite-based magnetic circuit with two aluminum demodulation rings, the driver provides low inductance, reduced flux modulation, and extended linearity throughout its operating range. The motor-suspension design is optimized to maintain consistent performance at high drive levels, with controlled excursion and reduced thermal compression during long-term operation.\n\nThe driver is intended for use with amplification of approx. 200 W AES (400 W continuous) into 8 ohms, with a recommended high-pass filter in the 18-25 Hz range for vented systems, depending on tuning frequency. Sealed active systems should incorporate a Linkwitz Transform targeting fc = 25 Hz, Qtc = 0.707 with appropriate power limiting below 25 Hz. Cone excursion increases rapidly below enclosure tuning in vented systems, and below the transform frequency in DSP-corrected sealed systems; active protection is essential.\n\nThe 101FHWX8-118D is suited for single-driver hi-fi subwoofers, 2.1 and multi-channel home theater systems, studio reference monitoring with sub-bass extension, and audiophile-grade active loudspeaker systems where low distortion, deep extension, and precise transient reproduction are required.","recommended_enclosure":"Recommended enclosure alignments (bass reflex):\n- 40 liters tuned to 29 Hz: high output, strong mid-bass, reduced excursion; -3 dB approx. 27 Hz, HP filter 25 Hz\n- 50 liters tuned to 26 Hz: balanced response, general-purpose (recommended); -3 dB approx. 24 Hz, HP filter 22 Hz\n- 50 liters tuned to 24 Hz: extended low-frequency, requires HP filter protection; -3 dB approx. 20 Hz, HP filter 20 Hz"},"assets":{"photos":["https:\/\/redcatt.net\/storage\/products\/web\/DR-10-006-8R-B2-C0001-photo1.jpg","https:\/\/redcatt.net\/storage\/products\/web\/DR-10-006-8R-B2-C0001-photo2.jpg","https:\/\/redcatt.net\/storage\/products\/web\/DR-10-006-8R-B2-C0001-photo3.jpg"],"freq_response_image":"https:\/\/redcatt.net\/storage\/products\/web\/DR-10-006-8R-B2-C0001-freqResponseImpedance.jpg","drawing_2d_pdf":"https:\/\/redcatt.net\/storage\/products\/downloads\/DR-10-006-8R-B2-C0001-drawing2dPdf.pdf","drawing_2d_image":"https:\/\/redcatt.net\/storage\/products\/web\/DR-10-006-8R-B2-C0001-drawing2dJpg.jpg","step_3d":"https:\/\/redcatt.net\/storage\/products\/downloads\/DR-10-006-8R-B2-C0001-step3d.step"}},{"code":"DR-10-007-8R-B2-C0001","name":"101NPM","slug":"dr-10-007-8r-b2-c0001","description":"Mid-woofer\/10inch\/Neo\/Paper\/150W\/8ohm","url":"https:\/\/redcatt.net\/products\/dr-10-007-8r-b2-c0001","category":"LF","type":"Mid-Woofer","size_inches":10,"is_featured":false,"general":{"nominal_impedance":"8","magnet":"Neodymium","basket_material":"Aluminum"},"power_handling":{"aes_watts":"150","continuous_watts":"300","peak_watts":"600"},"voice_coil":{"diameter":"50.8","wire":"CCAR","former":"Glass Fiber","winding_height":"14.5"},"thiele_small_parameters":{"fs_hz":53,"re_ohm":5,"qes":0.61,"qms":5.51,"qts":0.55,"vas_liters":49.7,"sd_cm2":363,"sensitivity_db":94.56,"mms_grams":32.6,"rms":1.97,"cms":0.28,"bl_tm":9.6,"le_mh":0.53},"physical":{"overall_diameter_mm":262,"bolt_circle_diameter_mm":246,"baffle_cutout_diameter_mm":230,"mounting_holes":"8","depth_mm":111.5,"net_weight_kg":1.97,"xmax_mm":"3.25","xmech_mm":"11.25"},"materials":{"surround":"fabric","cone_dome":"Paper CF","spider":"Nomex"},"content":{"key_features":["Ultra lightweight, designed for portable products","High efficiency, low harmonic distortion","Carbon fiber loaded paper cone"],"design_notes":"The 101NPM is a high efficiency, (95 dB 1watt \/ 1 meter) 10-inch mid-woofer with incredibly linear frequency response characteristics, high power handling capability, while generating ultra low harmonic distortion artifacts. The 101NPM uses a lightweight glass fiber loaded cone assembly along with a high excursion triple roll surround. This combination provides a lightweight, yet strong, piston, high efficiency and a peak to peak maximum excursion of 13.6.\n\nMagnetic Circuit\nREDCATT engineers have developed a ultra lightweight, inside neodymium slug based magnetic circuit, capable of delivering the highest level of performance, providing a consistent, high integrity magnetic flux gap, ultra low distortion characteristic and high efficiency cooling system. The magnetic structure has integrated two aluminum shorting rings. The magnetic circuit design is optimized to generate the minimum amount of flux modulation, providing exceptional stability.","hero_text":null,"ai_summary":"The 101NPMX8-119 is a 10-inch high-efficiency neodymium mid-woofer designed for lightweight, portable professional loudspeaker systems where minimum weight and maximum sensitivity are critical design parameters. It features a 2-inch CCAR (copper clad aluminum round wire) voice coil on a glass fiber former, a carbon fiber loaded paper cone with a triple roll fabric surround, and an inside neodymium slug motor with 2 aluminum shorting rings for minimized flux modulation and very low harmonic distortion. At 95 dB sensitivity (1W\/1m) with an exceptionally light moving mass of 32.6 grams  -  roughly half that of a typical professional 10-inch woofer  -  the driver achieves its high output through efficiency rather than excursion, making it ideal for portable systems where amplifier power and cabinet weight must be minimized.\n\nThe driver is rated for approximately 150 W AES \/ 300 W continuous power handling and is intended for use with DSP-controlled amplification. A high-pass filter in the range of 40-51 Hz (24 dB\/octave Linkwitz-Riley) is recommended for vented alignments depending on enclosure tuning, with a typical crossover to a high-frequency driver at 1.5-3 kHz. The modest linear excursion (3.25 mm) reflects the efficiency-first design approach  -  the driver's 95 dB sensitivity delivers high SPL from moderate amplifier power, with the triple roll surround providing controlled mechanical excursion to 13.6 mm peak-to-peak for transient headroom.\n\nThis driver is particularly effective in lightweight portable 2-way and multi-way PA tops, stage monitors, column speakers, and installation systems where system weight, high sensitivity, and low distortion are priorities. The inside neodymium slug motor, carbon fiber loaded paper cone, aluminum basket, and triple roll surround provide a lightweight, durable package suited to demanding portable and touring applications where equipment must be carried, rigged, and transported frequently.","recommended_enclosure":"Recommended enclosure alignments (bass reflex):\n- 25 liters tuned to 61 Hz: high output, strong mid-bass, reduced excursion; -3 dB approx. 56 Hz, HP filter 53 Hz\n- 25 liters tuned to 56 Hz: balanced response, general-purpose (recommended); -3 dB approx. 52 Hz, HP filter 46 Hz\n- 30 liters tuned to 50 Hz: extended low-frequency, requires HP filter protection; -3 dB approx. 42 Hz, HP filter 38 Hz"},"assets":{"photos":["https:\/\/redcatt.net\/storage\/products\/web\/DR-10-007-8R-B2-C0001-photo1.jpg","https:\/\/redcatt.net\/storage\/products\/web\/DR-10-007-8R-B2-C0001-photo2.jpg","https:\/\/redcatt.net\/storage\/products\/web\/DR-10-007-8R-B2-C0001-photo3.jpg","https:\/\/redcatt.net\/storage\/products\/web\/DR-10-007-8R-B2-C0001-photo4.jpg"],"freq_response_image":"https:\/\/redcatt.net\/storage\/products\/web\/DR-10-007-8R-B2-C0001-freqResponseImpedance.jpg","drawing_2d_pdf":"https:\/\/redcatt.net\/storage\/products\/downloads\/DR-10-007-8R-B2-C0001-drawing2dPdf.pdf","drawing_2d_image":"https:\/\/redcatt.net\/storage\/products\/web\/DR-10-007-8R-B2-C0001-drawing2dJpg.jpg","step_3d":"https:\/\/redcatt.net\/storage\/products\/downloads\/DR-10-007-8R-B2-C0001-step3d.step"}},{"code":"DR-10-009-8R-B2-C0001","name":"10FHW","slug":"dr-10-009-8r-b2-c0001","description":"Subwoofer\/10inch\/Ferrite\/Aluminum\/200W\/8ohm","url":"https:\/\/redcatt.net\/products\/dr-10-009-8r-b2-c0001","category":"LF","type":"Sub-woofer","size_inches":10,"is_featured":true,"general":{"nominal_impedance":"8","magnet":"Ferrite","basket_material":"Aluminum"},"power_handling":{"aes_watts":"200","continuous_watts":"400","peak_watts":"800"},"voice_coil":{"diameter":"50.8","wire":"Copper","former":"Aluminum","winding_height":"32.3"},"thiele_small_parameters":{"fs_hz":24,"re_ohm":5.7,"qes":0.45,"qms":2.37,"qts":0.37,"vas_liters":65.9,"sd_cm2":346,"sensitivity_db":86,"mms_grams":113.4,"rms":7.21,"cms":0.3882,"bl_tm":14.7,"le_mh":0.58},"physical":{"overall_diameter_mm":269,"bolt_circle_diameter_mm":257,"baffle_cutout_diameter_mm":238,"mounting_holes":"8","depth_mm":123,"net_weight_kg":6,"xmax_mm":"12.15","xmech_mm":"20.15"},"materials":{"surround":"NBR","cone_dome":"Aluminum","spider":"Nomex"},"content":{"key_features":["ANODIZED ALUMINUM CONE","TWO DEMODULATION RINGS","OPTMIZED AIR VENTILATION"],"design_notes":"Introducing the 10FHW: the latest evolution of our acclaimed 10FHW woofer model. This high-efficiency 10-inch subwoofer boasts an impressive 86dB sensitivity (1 watt \/ 1 meter), delivering extended low-frequency response and exceptional power handling capabilities.\n\nCrafted with a robust anodized aluminum cone assembly and a single roll rubber surround, the 101FHW is designed for durability and performance. Its Nomex spider, complete with stitched tinsel wires, ensures longevity even in high-powered scenarios. Enhanced back plate space and additional venting optimize power handling and cooling, making this woofer a standout in its class.\n\nOur innovative material selection guarantees remarkable strength, high efficiency, and sustained output under the most demanding conditions.\n\nOn the magnetic front, REDCATT engineers have developed a cutting-edge ferrite-based magnetic circuit that elevates performance to new heights. This design features a consistent, high-integrity magnetic flux gap, ultra-low distortion characteristics, and an efficient cooling system. With integrated aluminum shorting rings, our optimized magnetic circuit minimizes flux modulation, ensuring exceptional stability and reliability.\n\nExperience the power and precision of the 101FHW\u2014where innovation meets performance.","hero_text":null,"ai_summary":"The 10FHWX8-117D is a 10-inch sub-woofer driver designed for professional bass reflex enclosures, compact touring subwoofers, and high-output installation systems. It operates with 85 dB sensitivity (1W\/1m) and delivers a free-air resonance of 24 Hz  -  unusually low for this cone size  -  enabling genuine infra-bass extension in a compact format. The driver uses a balanced motor-suspension design with Qts=0.37 that provides good cone control while maintaining usable output across the operating bandwidth. A large volume displacement of 420 cm3 (Sd=346cm2 x Xmax=12.15mm) places this driver in the output class of many 12-inch PA woofers.\n\nIn bass reflex enclosures, the driver performs best in net internal volumes of 50 liters, tuned between 23 and 28 Hz. In the balanced alignment (25 Hz tuning), the system achieves an estimated -3dB point at approximately 23 Hz with a 76mm round port of 370mm length and peak port velocity of 14.7 m\/s at full rated excursion  -  comfortably within hi-fi and installation noise limits. The high-SPL alignment (28 Hz tuning, 306mm port) maximises output and cone control for touring applications; the extended alignment (23 Hz tuning, 465mm port) provides the deepest bass extension and is recommended where infra-bass reproduction and DSP-managed protection are available. The driver is intended for use with high-power amplification (approx. 200W AES \/ 400W continuous) and requires an active high-pass filter in the 20-25 Hz range depending on alignment, with appropriate excursion limiting below the port tuning frequency.\n\nThis design is particularly effective in single or multi-driver compact bass reflex systems used in touring, permanent installation, and cinema subwoofer applications where consistent thermal performance, low distortion at high excursion levels, and extended low-frequency output in a 10-inch format are the primary requirements.","recommended_enclosure":"Recommended enclosure alignments (bass reflex):\n- 50 liters tuned to 28 Hz: high output, strong mid-bass, reduced excursion; -3 dB approx. 26 Hz, HP filter 25 Hz\n- 50 liters tuned to 25 Hz: balanced response, general-purpose (recommended); -3 dB approx. 23 Hz, HP filter 22 Hz\n- 50 liters tuned to 23 Hz: extended low-frequency, requires HP filter protection; -3 dB approx. 20 Hz, HP filter 20 Hz"},"assets":{"photos":["https:\/\/redcatt.net\/storage\/products\/web\/DR-10-009-8R-B2-C0001-photo1.jpg","https:\/\/redcatt.net\/storage\/products\/web\/DR-10-009-8R-B2-C0001-photo2.jpg","https:\/\/redcatt.net\/storage\/products\/web\/DR-10-009-8R-B2-C0001-photo3.jpg","https:\/\/redcatt.net\/storage\/products\/web\/DR-10-009-8R-B2-C0001-photo4.jpg"],"freq_response_image":"https:\/\/redcatt.net\/storage\/products\/web\/DR-10-009-8R-B2-C0001-freqResponseImpedance.jpg","drawing_2d_pdf":"https:\/\/redcatt.net\/storage\/products\/downloads\/DR-10-009-8R-B2-C0001-drawing2dPdf.pdf","drawing_2d_image":"https:\/\/redcatt.net\/storage\/products\/web\/DR-10-009-8R-B2-C0001-drawing2dJpg.jpg","step_3d":"https:\/\/redcatt.net\/storage\/products\/downloads\/DR-10-009-8R-B2-C0001-step3d.step"}},{"code":"DR-10-012-8R-B2-C0001","name":"10FIND","slug":"dr-10-012-8r-b2-c0001","description":"Mid-Woofer\/10inch\/Ferrite\/Paper\/250W\/8ohm","url":"https:\/\/redcatt.net\/products\/dr-10-012-8r-b2-c0001","category":"LF","type":"Mid-Woofer","size_inches":10,"is_featured":false,"general":{"nominal_impedance":"8","magnet":"Ferrite","basket_material":"Aluminum"},"power_handling":{"aes_watts":"250","continuous_watts":"500","peak_watts":"1000"},"voice_coil":{"diameter":"63.5","wire":"CCAW","former":"Glass Fiber","winding_height":"13.5"},"thiele_small_parameters":{"fs_hz":66,"re_ohm":5.5,"qes":0.41,"qms":13.13,"qts":0.39,"vas_liters":23.5,"sd_cm2":346,"sensitivity_db":95.81,"mms_grams":41.3,"rms":1.3,"cms":0.14,"bl_tm":15.5,"le_mh":0.68},"physical":{"overall_diameter_mm":262,"bolt_circle_diameter_mm":246,"baffle_cutout_diameter_mm":230,"mounting_holes":"8","depth_mm":108.5,"net_weight_kg":4.55,"xmax_mm":"2.75","xmech_mm":"10.75"},"materials":{"surround":"fabric","cone_dome":"Paper GF","spider":"Nomex"},"content":{"key_features":["Glass fiber loaded paper cone","2 demodulation rings,  powerful motor structure","High spl, low thd"],"design_notes":"The 10FIND is a high efficiency, (96 dB 1watt \/ 1 meter) 10-inch woofer with linear frequency response characteristics, high power handling capability, while generating ultra low harmonic distortion artifacts. The 10FIND uses a lightweight glass fiber loaded cone assembly along with a high excursion double roll surround. This combination provides a lightweight, yet strong, piston.\n\n\nMagnetic Circuit\nREDCATT engineers have developed a ferrite based magnetic circuit, capable of delivering the highest level of performance, providing a consistent, high integrity magnetic flux gap, ultra low distortion characteristic and high efficiency cooling system. The magnetic structure has integrated two aluminum shorting rings. The magnetic circuit design is optimized to generate the minimum amount of flux modulation, providing exceptional stability.","hero_text":null,"ai_summary":"The 10FINDX8-033 is a 10-inch mid-woofer driver designed for professional 2-way and multi-way systems requiring high sensitivity (96 dB 1W\/1m) and controlled low-frequency behavior. The driver uses a balanced motor-suspension design that provides good cone control while maintaining usable output across its operating bandwidth.\n\nThe driver is intended for use with high-power amplification (approx. 250 W AES \/ 500 W continuous) and DSP control. A high-pass filter in the range of 48-68 Hz is recommended depending on enclosure tuning, along with proper limiting to manage thermal and mechanical stress. Typical operating bandwidth is 51-2000 Hz, covering bass through upper-mid frequencies for direct integration with a compression driver or tweeter in a two-way or multi-way system.\n\nThis design is particularly effective in single or multi-driver bass reflex systems used in professional two-way and multi-way PA systems, powered monitors, and compact bass-reflex enclosures, where extended bandwidth, controlled distortion across the full operating range, and versatile system integration are required.","recommended_enclosure":"Recommended enclosure alignments (bass reflex):\n- 15 liters tuned to 76 Hz: high output, strong mid-bass, reduced excursion; -3 dB approx. 70 Hz, HP filter 68 Hz\n- 20 liters tuned to 69 Hz: balanced response, general-purpose (recommended); -3 dB approx. 63 Hz, HP filter 59 Hz\n- 25 liters tuned to 60 Hz: extended low-frequency, requires HP filter protection; -3 dB approx. 51 Hz, HP filter 48 Hz"},"assets":{"photos":["https:\/\/redcatt.net\/storage\/products\/web\/DR-10-012-8R-B2-C0001-photo1.jpg","https:\/\/redcatt.net\/storage\/products\/web\/DR-10-012-8R-B2-C0001-photo2.jpg","https:\/\/redcatt.net\/storage\/products\/web\/DR-10-012-8R-B2-C0001-photo3.jpg","https:\/\/redcatt.net\/storage\/products\/web\/DR-10-012-8R-B2-C0001-photo4.jpg"],"freq_response_image":"https:\/\/redcatt.net\/storage\/products\/web\/DR-10-012-8R-B2-C0001-freqResponseImpedance.jpg","drawing_2d_pdf":"https:\/\/redcatt.net\/storage\/products\/downloads\/DR-10-012-8R-B2-C0001-drawing2dPdf.pdf","drawing_2d_image":"https:\/\/redcatt.net\/storage\/products\/web\/DR-10-012-8R-B2-C0001-drawing2dJpg.jpg","step_3d":"https:\/\/redcatt.net\/storage\/products\/downloads\/DR-10-012-8R-B2-C0001-step3d.step"}},{"code":"DR-10-017-8R-B2-C0001","name":"10NPM","slug":"dr-10-017-8r-b2-c0001","description":"Mid-Woofer\/10inch\/Neo\/Paper\/400W\/8ohm","url":"https:\/\/redcatt.net\/products\/dr-10-017-8r-b2-c0001","category":"LF","type":"Mid-Woofer","size_inches":10,"is_featured":false,"general":{"nominal_impedance":"8","magnet":"Neodymium","basket_material":"Aluminum"},"power_handling":{"aes_watts":"400","continuous_watts":"800","peak_watts":"1600"},"voice_coil":{"diameter":"76.2","wire":"CCAW","former":"Glass Fiber","winding_height":"18.6"},"thiele_small_parameters":{"fs_hz":64,"re_ohm":4.7,"qes":0.29,"qms":7.7,"qts":0.28,"vas_liters":23,"sd_cm2":363,"sensitivity_db":97.48,"mms_grams":50.7,"rms":2.65,"cms":0.125,"bl_tm":18.3,"le_mh":0.52},"physical":{"overall_diameter_mm":262,"bolt_circle_diameter_mm":246,"baffle_cutout_diameter_mm":234,"mounting_holes":"4","depth_mm":107.8,"net_weight_kg":3.8,"xmax_mm":"4.05","xmech_mm":"14.55"},"materials":{"surround":"fabric","cone_dome":"Paper CF","spider":"Nomex"},"content":{"key_features":["Hi sensitivity, hi power handling","Carbon fiber loaded paper cone, nomex spider","Excellent frequency response"],"design_notes":"The 10NPM is a high efficiency, (95 dB 1watt \/ 1 meter) 10-inch mid bass woofer with incredibly linear frequency response characteristics, extreme high power handling capability while generating low harmonic distortion artifacts.-\nThe 10NPM uses a lightweight carbon fiber loaded cone assembly along with a precision double roll constant geometry surround. This combination provides remarkable strength, high efficiency and a excursion linearity of 7.5mm.\n\nMagnetic Circuit\nREDCATT engineers have developed a lightweight, inside-neodymium slug based magnetic circuit capable of delivering the highest level of performance providing a consistent, high integrity magnetic flux gap, ultra low distortion characteristic and high efficiency cooling system. The magnetic circuit design is optimized to generate the minimum amount of flux modulation, providing exceptional stability.","hero_text":null,"ai_summary":"The 10NPMX8-055 is a 10-inch high-efficiency neodymium mid-woofer designed for high-output professional two-way, multi-way, and line array systems requiring extreme sensitivity (97.5 dB 1W\/1m), high power handling (400 W AES \/ 800 W continuous), and controlled low-distortion performance. It features a 3-inch CCAW voice coil on a glass fiber former, a carbon fiber loaded paper cone with a precision double roll constant geometry fabric surround delivering 7.5 mm peak-to-peak excursion linearity, and an inside neodymium slug motor optimized for minimum flux modulation and very low harmonic distortion. With a low Qts of 0.28 and strong motor force (Bl 18.3 T.m), the motor and suspension are optimized to maintain consistent performance at high drive levels, with controlled excursion and reduced thermal compression during long-term operation.\n\nThe driver requires active DSP crossover management in both configurations. In vented mid-woofer use, a high-pass filter in the range of 40-56 Hz (24 dB\/octave Linkwitz-Riley) is recommended depending on enclosure tuning, with a typical crossover to a high-frequency compression driver at 1.2-2.5 kHz. In sealed midrange use, a high-pass filter in the range of 150-300 Hz is recommended depending on enclosure volume and system architecture. In both cases, the 400 W AES power handling supports sustained high-output operation with appropriate limiting.\n\nThis driver is particularly effective in large-format touring line arrays, high-output 2-way portable loudspeakers, multi-way point-source cabinets, and high-SPL installation systems where per-driver output, sensitivity, power handling, and low distortion are priorities. The inside neodymium slug motor, flux-modulation-optimized magnetic circuit, carbon fiber loaded cone, and aluminum basket provide consistent, durable performance in the most demanding professional touring and installation environments.","recommended_enclosure":"Recommended enclosure alignments (bass reflex):\n- 25 liters tuned to 66 Hz: high output, strong mid-bass, reduced excursion; -3 dB approx. 61 Hz, HP filter 58 Hz\n- 25 liters tuned to 58 Hz: balanced response, general-purpose (recommended); -3 dB approx. 49 Hz, HP filter 48 Hz\n- 30 liters tuned to 50 Hz: extended low-frequency, requires HP filter protection; -3 dB approx. 42 Hz, HP filter 38 Hz"},"assets":{"photos":[],"freq_response_image":"https:\/\/redcatt.net\/storage\/products\/web\/DR-10-017-8R-B2-C0001-freqResponseImpedance.jpg","drawing_2d_pdf":null,"drawing_2d_image":null,"step_3d":null}},{"code":"DR-10-018-8R-B2-C0001","name":"10NPM","slug":"dr-10-018-8r-b2-c0001","description":"Mid-Woofer\/10inch\/Neo\/Paper\/200W\/8ohm","url":"https:\/\/redcatt.net\/products\/dr-10-018-8r-b2-c0001","category":"LF","type":"Mid-Woofer","size_inches":10,"is_featured":false,"general":{"nominal_impedance":"8","magnet":"Neodymium","basket_material":"Aluminum"},"power_handling":{"aes_watts":"200","continuous_watts":"400","peak_watts":"800"},"voice_coil":{"diameter":"3","wire":"CCAW","former":"Glass Fiber","winding_height":"23.2"},"thiele_small_parameters":{"fs_hz":58,"re_ohm":6.5,"qes":0.36,"qms":4.68,"qts":0.33,"vas_liters":29.3,"sd_cm2":363.1,"sensitivity_db":95.07,"mms_grams":47,"rms":3.66,"cms":0.16,"bl_tm":17.9,"le_mh":0.79},"physical":{"overall_diameter_mm":262,"bolt_circle_diameter_mm":246,"baffle_cutout_diameter_mm":234,"mounting_holes":"4","depth_mm":107.8,"net_weight_kg":3.5,"xmax_mm":"6.35","xmech_mm":"16.85"},"materials":{"surround":"fabric","cone_dome":"Paper CF","spider":"Nomex"},"content":{"key_features":["High sensitivity, hi power handling","Carbon fiber loaded paper cone, nomex spider","Excellent frequency response"],"design_notes":"The 10NPM is a high efficiency, (95 dB 1watt \/ 1 meter) 10-inch mid bass woofer with incredibly linear frequency response characteristics, extreme high power handling capability while generating low harmonic distortion artifacts.-\nThe 10NPM uses a lightweight carbon fiber loaded cone assembly along with a precision double roll constant geometry surround. This combination provides remarkable strength, high efficiency and a excursion linearity of 15.4mm.\n\nMagnetic Circuit\nREDCATT engineers have developed a lightweight, inside-neodymium slug based magnetic circuit capable of delivering the highest level of performance providing a consistent, high integrity magnetic flux gap, ultra low distortion characteristic and high efficiency cooling system. The magnetic circuit design is optimized to generate the minimum amount of flux modulation, providing exceptional stability.","hero_text":null,"ai_summary":"The 10NPMX8-319 is a 10-inch neodymium pro mid-woofer designed for professional 2-way PA speaker systems, compact touring cabinets, and permanently installed enclosures crossed to a compression driver or horn. It features a carbon fiber paper cone, double-roll constant-geometry fabric surround, Nomex spider, and a 3-inch CCAW voice coil on a glass fiber former, driven by an inside-slug neodymium magnetic circuit designed for minimized flux modulation and high flux-gap integrity. Sensitivity is 95.07 dB (1W\/1m). With a Qts of 0.33, this driver uses a low Qts, high motor strength design optimized to maintain consistent performance at high drive levels, with controlled excursion and reduced thermal compression during long-term operation.\n\nThe 10NPMX8-319 handles approx. 200 W AES and 400 W continuous power, with a peak SPL of 118 dB at 1 metre (AES) and 121 dB at continuous rated power. A high-pass filter in the 45-60 Hz range is recommended depending on alignment. The operating bandwidth is approximately 65-1,000 Hz, with cone beaming onset near 1,018 Hz and inductance rolloff near 1,309 Hz; a crossover to a compression driver on horn at 800 Hz to 1.5 kHz is required. Third or fourth-order crossover slopes are recommended to control directivity above 1,018 Hz.\n\nThis driver is suited for compact single-driver vented 2-way PA touring cabinets; 2-way portable and installed PA enclosures for live sound and fixed-venue reinforcement; stage monitor wedges crossed to a compression horn at 1 kHz; and installed 2-way enclosures where a neodymium motor's reduced weight is advantageous. The inside-slug neodymium magnetic circuit, CCAW voice coil, and glass fiber former provide a lightweight motor assembly and consistent high-efficiency output for demanding sustained-power PA applications.","recommended_enclosure":"Recommended enclosure alignments (bass reflex):\n- 25 liters tuned to 64 Hz: high output, strong mid-bass, reduced excursion; -3 dB approx. 59 Hz, HP filter 56 Hz\n- 30 liters tuned to 56 Hz: balanced response, general-purpose (recommended); -3 dB approx. 48 Hz, HP filter 46 Hz\n- 35 liters tuned to 49 Hz: extended low-frequency, requires HP filter protection; -3 dB approx. 42 Hz, HP filter 37 Hz"},"assets":{"photos":[],"freq_response_image":"https:\/\/redcatt.net\/storage\/products\/web\/DR-10-018-8R-B2-C0001-freqResponseImpedance.jpg","drawing_2d_pdf":null,"drawing_2d_image":null,"step_3d":null}},{"code":"DR-8-006-4R-B2-C0001","name":"81FHW","slug":"dr-8-006-4r-b2-c0001","description":"Woofer\/8inch\/Ferrite\/Paper\/100W\/4ohm","url":"https:\/\/redcatt.net\/products\/dr-8-006-4r-b2-c0001","category":"LF","type":"Woofer","size_inches":8,"is_featured":false,"general":{"nominal_impedance":"4","magnet":"Ferrite","basket_material":"Steel"},"power_handling":{"aes_watts":"100","continuous_watts":"200","peak_watts":"400"},"voice_coil":{"diameter":"35.6","wire":"Copper","former":"Aluminum","winding_height":"18.2"},"thiele_small_parameters":{"fs_hz":39,"re_ohm":3.6,"qes":0.58,"qms":5.4,"qts":0.52,"vas_liters":21.5,"sd_cm2":201.1,"sensitivity_db":85.94,"mms_grams":44,"rms":2,"cms":0.38,"bl_tm":8.25,"le_mh":1.12},"physical":{"overall_diameter_mm":209,"bolt_circle_diameter_mm":197,"baffle_cutout_diameter_mm":180,"mounting_holes":"8","depth_mm":95,"net_weight_kg":1.7,"xmax_mm":"6.1","xmech_mm":"12.1"},"materials":{"surround":"Foam","cone_dome":"Paper GF","spider":"Nomex"},"content":{"key_features":["Good low frequency response","Lightweight surround, stiff paper cone","Affordable woofer"],"design_notes":"The 81FHW woofer was designed with smaller hi-fi subwoofers in mind. The woofer works well in vented enclosures or combined with a passive radiator. Optimized magnetic structure delivers good level of performance and balancing well performance vs cost.\n\tWe have chosen lightweight foam surround in this design. Our extensive development and testing of this material yielded in custom formulation of the raw material we use for the surround and guaranties its long lasting performance.","hero_text":null,"ai_summary":"The 81FHWX4-289 is an 8-inch sub-woofer driver designed for compact hi-fi subwoofer systems, home audio, and cost-effective installation applications. It operates at 85.9 dB sensitivity (1W\/1m) and features a compliant suspension design suited to moderate-volume vented or passive-radiator enclosures with extended low-frequency response.\n\nThe driver is intended for use with moderate amplification (approx. 100 W AES \/ 200 W continuous) and DSP control. A high-pass filter in the range of 25-37 Hz is recommended depending on enclosure tuning, along with appropriate limiting to manage excursion below tuning. Typical operating bandwidth is 31-100 Hz, suitable for integration with a mid-bass or full-range driver in a two-way system.\n\nThis design is well suited for single-driver compact bass reflex or passive-radiator enclosures in hi-fi, home theater, and cost-conscious installation applications, where a balance of low-frequency extension, compactness, and value are the primary priorities.","recommended_enclosure":"Recommended enclosure alignments (bass reflex):\n- 10 liters tuned to 45 Hz: high output, strong mid-bass, reduced excursion; -3 dB approx. 41 Hz, HP filter 37 Hz\n- 12 liters tuned to 41 Hz: balanced response, general-purpose (recommended); -3 dB approx. 38 Hz, HP filter 31 Hz\n- 16 liters tuned to 37 Hz: extended low-frequency, requires HP filter protection; -3 dB approx. 31 Hz, HP filter 25 Hz"},"assets":{"photos":["https:\/\/redcatt.net\/storage\/products\/web\/DR-8-006-4R-B2-C0001-photo1.jpg","https:\/\/redcatt.net\/storage\/products\/web\/DR-8-006-4R-B2-C0001-photo2.jpg"],"freq_response_image":"https:\/\/redcatt.net\/storage\/products\/web\/DR-8-006-4R-B2-C0001-freqResponseImpedance.jpg","drawing_2d_pdf":"https:\/\/redcatt.net\/storage\/products\/downloads\/DR-8-006-4R-B2-C0001-drawing2dPdf.pdf","drawing_2d_image":"https:\/\/redcatt.net\/storage\/products\/web\/DR-8-006-4R-B2-C0001-drawing2dJpg.jpg","step_3d":"https:\/\/redcatt.net\/storage\/products\/downloads\/DR-8-006-4R-B2-C0001-step3d.step"}},{"code":"DR-8-008-8R-B2-C0001","name":"81FIND","slug":"dr-8-008-8r-b2-c0001","description":"Mid-Woofer\/8inch\/Ferrite\/Paper\/200W\/8ohm","url":"https:\/\/redcatt.net\/products\/dr-8-008-8r-b2-c0001","category":"LF","type":"Mid-Woofer","size_inches":8,"is_featured":false,"general":{"nominal_impedance":"8","magnet":"Ferrite","basket_material":"Steel"},"power_handling":{"aes_watts":"200","continuous_watts":"400","peak_watts":"800"},"voice_coil":{"diameter":"50.8","wire":"CCAW","former":"Glass Fiber","winding_height":"12.5"},"thiele_small_parameters":{"fs_hz":80,"re_ohm":4.7,"qes":0.53,"qms":8.35,"qts":0.5,"vas_liters":11.3,"sd_cm2":213.8,"sensitivity_db":94.68,"mms_grams":22.6,"rms":1.36,"cms":0.18,"bl_tm":10.2,"le_mh":0.44},"physical":{"overall_diameter_mm":209,"bolt_circle_diameter_mm":197,"baffle_cutout_diameter_mm":180,"mounting_holes":"8","depth_mm":91.5,"net_weight_kg":2.8,"xmax_mm":"2.25","xmech_mm":"10.25"},"materials":{"surround":"fabric","cone_dome":"Paper GF","spider":"Nomex"},"content":{"key_features":["EXTENDED FREQUENCY RESPONSE","Ideal for small and portable 2-way systems","Affordable, yet very capable design for cost sensitive product"],"design_notes":"The 81FIND is a high efficiency, (95 dB 1watt \/ 1 meter) 8-inch woofer with linear frequency response characteristics, good power handling capability while generating low harmonic distortion artifacts. The 81FIND uses a lightweight glass-fiber loaded cone assembly along with a high excursion M-roll surround. This combination provides a lightweight, yet strong, piston.\n\nMagnetic Circuit\n\nFerrite based magnetic circuit, capable of delivering the good level of performance, providing a consistent, high integrity magnetic flux gap, low distortion characteristic and high-efficiency cooling system. The metal parts are extensively coated to provide the maximum weather protection. \n\n\nThis driver has been chosen by many audio engineers for smaller sized, or portable audio products. It has proven its capability over and over again all around the world, many times in challenging applications or environments. 81FIND is proven design that delivers good balance between performance and cost.","hero_text":null,"ai_summary":"The 81FINDX8-290 is an 8-inch ferrite mid-woofer designed for professional portable and installation loudspeaker systems requiring reliable performance across the 70-3000 Hz operating range. With a sensitivity of 95 dB (1W\/1m), a 2-inch CCAW voice coil on a glass fiber former, and a glass-fiber loaded paper cone with M-roll fabric surround, the driver provides a balanced combination of efficiency, power handling, and extended frequency response. The motor-suspension design (Qts 0.5) provides good cone control while maintaining usable output across its operating bandwidth, making it well-suited to compact vented enclosures.\n\nThe driver is rated for approximately 200 W AES \/ 400 W continuous power handling and is intended for use with DSP-controlled amplification. A high-pass filter in the range of 64-84 Hz (24 dB\/octave Linkwitz-Riley) is recommended depending on enclosure tuning, along with appropriate limiting to manage thermal and mechanical stress during sustained operation. Typical crossover to a high-frequency driver is in the 1.5-3 kHz region depending on system architecture.\n\nThis driver is particularly effective in compact 2-way portable loudspeakers, small-format installation systems, and cost-effective product lines for touring, rental, and fixed-install applications. The weather-coated ferrite motor assembly and proven construction provide long-term reliability in demanding environments, and the balanced cost-to-performance ratio makes it an established choice for engineers designing competitively priced professional audio products.","recommended_enclosure":"Recommended enclosure alignments (bass reflex):\n- 6 liters tuned to 92 Hz: high output, strong mid-bass, reduced excursion; -3 dB approx. 85 Hz, HP filter 84 Hz\n- 8 liters tuned to 84 Hz: balanced response, general-purpose (recommended); -3 dB approx. 77 Hz, HP filter 74 Hz\n- 8 liters tuned to 76 Hz: extended low-frequency, requires HP filter protection; -3 dB approx. 65 Hz, HP filter 64 Hz"},"assets":{"photos":["https:\/\/redcatt.net\/storage\/products\/web\/DR-8-008-8R-B2-C0001-photo1.jpg","https:\/\/redcatt.net\/storage\/products\/web\/DR-8-008-8R-B2-C0001-photo2.jpg","https:\/\/redcatt.net\/storage\/products\/web\/DR-8-008-8R-B2-C0001-photo3.jpg"],"freq_response_image":"https:\/\/redcatt.net\/storage\/products\/web\/DR-8-008-8R-B2-C0001-freqResponseImpedance.jpg","drawing_2d_pdf":"https:\/\/redcatt.net\/storage\/products\/downloads\/DR-8-008-8R-B2-C0001-drawing2dPdf.pdf","drawing_2d_image":"https:\/\/redcatt.net\/storage\/products\/web\/DR-8-008-8R-B2-C0001-drawing2dJpg.jpg","step_3d":"https:\/\/redcatt.net\/storage\/products\/downloads\/DR-8-008-8R-B2-C0001-step3d.step"}},{"code":"DR-8-009-8R-B2-C0001","name":"81NPM","slug":"dr-8-009-8r-b2-c0001","description":"Mid-Range\/8inch\/Neo\/Paper\/400W\/8ohm","url":"https:\/\/redcatt.net\/products\/dr-8-009-8r-b2-c0001","category":"LF","type":"Midrange","size_inches":8,"is_featured":false,"general":{"nominal_impedance":"8","magnet":"Neodymium","basket_material":"Aluminum"},"power_handling":{"aes_watts":"200","continuous_watts":"400","peak_watts":"800"},"voice_coil":{"diameter":"76.2","wire":"CCAW","former":"Glass Fiber","winding_height":"22.5"},"thiele_small_parameters":{"fs_hz":72,"re_ohm":5.2,"qes":0.34,"qms":7.97,"qts":0.33,"vas_liters":10.3,"sd_cm2":219,"sensitivity_db":93,"mms_grams":40.5,"rms":2.3,"cms":0.12,"bl_tm":16.7,"le_mh":0.5},"physical":{"overall_diameter_mm":210,"bolt_circle_diameter_mm":195.5,"baffle_cutout_diameter_mm":186.88,"mounting_holes":"8","depth_mm":101.3,"net_weight_kg":3.2,"xmax_mm":"6","xmech_mm":"16.5"},"materials":{"surround":"fabric","cone_dome":"Paper GF","spider":"Nomex"},"content":{"key_features":["EXTENDED FREQUENCY RESPONSE","2 demodulation rings powerful motor structure","Designed for 2-way and multi-way speaker systems"],"design_notes":"The 81NPM was designed for good reproduction of voice. With an extended low-frequency response, this mid-woofer is highly suitable for two-way and multi-way systems. It\u2019s high power handling capabilities extend the ideal usage as a mid-range driver in line-array systems. The 81NPM uses a lightweight half-pressed paper cone reinforced by our proprietary cone treatment, which also works as weatherization protection. The used high-quality components ensure long-lasting performance even in high powered applications. The chosen material combination provides remarkable strength, high efficiency and\u00a0sustained output under extreme conditions.\u00a0\n\nPower Handling\nThe voice coil sports Kapton former material capable of withstanding peak temperatures above 300\u00b0C, well beyond the thermal requirements of modern audio systems. Former strength provides the ideal transfer of power between the voice coil and the cone assembly and assists in reducing distortion artifacts. By combining this material with state of the art adhesives and our winding voice coil technology, the 81NPM delivers incredibly high performance.","hero_text":null,"ai_summary":"The 81NPMX8-263 is an 8-inch neodymium mid-woofer designed for professional two-way, multi-way, and line array systems requiring high power handling (200 W AES \/ 400 W continuous) and controlled, low-distortion performance across a wide operating bandwidth. It features a 3-inch CCAW voice coil on a glass fiber former, a weatherized half-pressed paper cone with fabric surround, and a neodymium motor with 2 demodulation rings for reduced harmonic and intermodulation distortion. With a sensitivity of 93 dB (1W\/1m) and a low Qts of 0.33, the motor and suspension are optimized to maintain consistent performance at high drive levels, with controlled excursion and reduced thermal compression during long-term operation.\n\nThe driver requires active DSP crossover management in both configurations. In vented mid-woofer use, a high-pass filter in the range of 51-70 Hz (24 dB\/octave Linkwitz-Riley) is recommended depending on enclosure tuning, with a typical crossover to a high-frequency driver at 1.2-3 kHz. In sealed midrange use, a high-pass filter in the range of 150-300 Hz is recommended depending on enclosure volume and system architecture. In both cases, appropriate limiting is required to manage thermal and mechanical stress during sustained operation.\n\nThis driver is particularly effective in professional touring line arrays, compact 2-way portable loudspeakers, multi-way point-source cabinets, and installation systems where versatility across mid-woofer and midrange roles, high power handling, low distortion, and environmental durability are priorities. The neodymium motor with demodulation rings and weatherized cone treatment provide consistent performance in demanding touring and outdoor environments.","recommended_enclosure":"Recommended enclosure alignments (sealed):\n- 1.8 liters (Qtc 0.85): compact, punchy character; system resonance approx. 187 Hz\n- 2.9 liters (Qtc 0.707): maximally flat Butterworth response (recommended); system resonance approx. 154 Hz\n- 4.5 liters (Qtc 0.6): extended response, smooth gradual rolloff; system resonance approx. 131 Hz"},"assets":{"photos":["https:\/\/redcatt.net\/storage\/products\/web\/DR-8-009-8R-B2-C0001-photo1.jpg","https:\/\/redcatt.net\/storage\/products\/web\/DR-8-009-8R-B2-C0001-photo2.jpg"],"freq_response_image":"https:\/\/redcatt.net\/storage\/products\/web\/DR-8-009-8R-B2-C0001-freqResponseImpedance.jpg","drawing_2d_pdf":"https:\/\/redcatt.net\/storage\/products\/downloads\/DR-8-009-8R-B2-C0001-drawing2dPdf.pdf","drawing_2d_image":"https:\/\/redcatt.net\/storage\/products\/web\/DR-8-009-8R-B2-C0001-drawing2dJpg.jpg","step_3d":"https:\/\/redcatt.net\/storage\/products\/downloads\/DR-8-009-8R-B2-C0001-step3d.step"}},{"code":"DR-8-010-8R-B2-C0001","name":"81NPM","slug":"dr-8-010-8r-b2-c0001","description":"Mid-Range\/8inch\/Neo\/400W\/8ohm","url":"https:\/\/redcatt.net\/products\/dr-8-010-8r-b2-c0001","category":"LF","type":"Mid-Woofer","size_inches":8,"is_featured":false,"general":{"nominal_impedance":"8","magnet":"Neodymium","basket_material":"Aluminum"},"power_handling":{"aes_watts":"200","continuous_watts":"400","peak_watts":"800"},"voice_coil":{"diameter":"76.2","wire":"CCAW","former":"Glass Fiber","winding_height":"18.6"},"thiele_small_parameters":{"fs_hz":69,"re_ohm":7.4,"qes":0.29,"qms":4.84,"qts":0.28,"vas_liters":10.3,"sd_cm2":219,"sensitivity_db":93.05,"mms_grams":34.2,"rms":3.06,"cms":0.156,"bl_tm":19.3,"le_mh":0.75},"physical":{"overall_diameter_mm":210,"bolt_circle_diameter_mm":195.5,"baffle_cutout_diameter_mm":186.88,"mounting_holes":"8","depth_mm":101.3,"net_weight_kg":3.2,"xmax_mm":"4.05","xmech_mm":"14.55"},"materials":{"surround":"fabric","cone_dome":"Paper GF","spider":"Nomex"},"content":{"key_features":["EXTENDED FREQUENCY RESPONSE","2 demodulation rings powerful motor structure","Designed for 2-way and multi-way speaker systems"],"design_notes":"The 81NPM was designed for good reproduction of voice. With an extended low-frequency response, this mid-woofer is highly suitable for two-way and multi-way systems. It\u2019s high power handling capabilities extend the ideal usage as a mid-range driver in line-array systems. The 81NPM uses a lightweight half-pressed paper cone reinforced by our proprietary cone treatment, which also works as weatherization protection. The used high-quality components ensure long-lasting performance even in high powered applications. The chosen material combination provides remarkable strength, high efficiency and\u00a0sustained output under extreme conditions.\u00a0\n\nPower Handling\nThe voice coil sports Kapton former material capable of withstanding peak temperatures above 300\u00b0C, well beyond the thermal requirements of modern audio systems. Former strength provides the ideal transfer of power between the voice coil and the cone assembly and assists in reducing distortion artifacts. By combining this material with state of the art adhesives and our winding voice coil technology, the 81NPM delivers incredibly high performance.","hero_text":null,"ai_summary":"The 81NPMX8-373A is an 8-inch neodymium mid-woofer designed for professional two-way, multi-way, and line array systems requiring high power handling (200 W AES \/ 400 W continuous), tight motor control, and low-distortion reproduction. It features a 3-inch CCAW voice coil on a glass fiber former with Kapton-grade thermal tolerance, a weatherized half-pressed paper cone with fabric surround, and a neodymium motor with 2 demodulation rings for reduced harmonic and intermodulation distortion. With a sensitivity of 93 dB (1W\/1m) and a very low Qts of 0.28, the motor and suspension are optimized to maintain consistent performance at high drive levels, with controlled excursion and reduced thermal compression during long-term operation.\n\nThe driver requires active DSP crossover management in both configurations. In vented mid-woofer use, a high-pass filter in the range of 44-61 Hz (24 dB\/octave Linkwitz-Riley) is recommended depending on enclosure tuning, with a typical crossover to a high-frequency driver at 1.2-3 kHz. In sealed midrange use, a high-pass filter in the range of 170-350 Hz is recommended depending on enclosure volume and system architecture. In both cases, appropriate limiting is required to manage thermal and mechanical stress during sustained operation.\n\nThis driver is particularly effective in professional touring line arrays, compact 2-way portable loudspeakers, multi-way point-source cabinets, and installation systems where versatility across mid-woofer and midrange roles, high power handling, low distortion, and environmental durability are priorities. The neodymium motor with demodulation rings, lightweight cone assembly, and weatherized treatment provide consistent performance in demanding touring and outdoor environments.","recommended_enclosure":"Recommended enclosure alignments (bass reflex):\n- 10 liters tuned to 71 Hz: high output, strong mid-bass, reduced excursion; -3 dB approx. 65 Hz, HP filter 63 Hz\n- 12 liters tuned to 62 Hz: balanced response, general-purpose (recommended); -3 dB approx. 53 Hz, HP filter 52 Hz\n- 14 liters tuned to 54 Hz: extended low-frequency, requires HP filter protection; -3 dB approx. 46 Hz, HP filter 42 Hz"},"assets":{"photos":["https:\/\/redcatt.net\/storage\/products\/web\/DR-8-010-8R-B2-C0001-photo1.jpg","https:\/\/redcatt.net\/storage\/products\/web\/DR-8-010-8R-B2-C0001-photo2.jpg"],"freq_response_image":"https:\/\/redcatt.net\/storage\/products\/web\/DR-8-010-8R-B2-C0001-freqResponseImpedance.jpg","drawing_2d_pdf":"https:\/\/redcatt.net\/storage\/products\/downloads\/DR-8-010-8R-B2-C0001-drawing2dPdf.pdf","drawing_2d_image":"https:\/\/redcatt.net\/storage\/products\/web\/DR-8-010-8R-B2-C0001-drawing2dJpg.jpg","step_3d":"https:\/\/redcatt.net\/storage\/products\/downloads\/DR-8-010-8R-B2-C0001-step3d.step"}},{"code":"DR-8-012-8R-B2-C0001","name":"81XR","slug":"dr-8-012-8r-b2-c0001","description":"Woofer\/XR Woofer\/8inch\/Neo\/Paper\/200W\/8ohm","url":"https:\/\/redcatt.net\/products\/dr-8-012-8r-b2-c0001","category":"LF","type":"Mid-Woofer","size_inches":8,"is_featured":true,"general":{"nominal_impedance":"8","magnet":"Neodymium","basket_material":"Aluminum"},"power_handling":{"aes_watts":"200","continuous_watts":"400","peak_watts":"800"},"voice_coil":{"diameter":"63.5","wire":null,"former":"Glass Fiber","winding_height":"18.3"},"thiele_small_parameters":{"fs_hz":73,"re_ohm":5.5,"qes":0.37,"qms":1.47,"qts":0.3,"vas_liters":7.2,"sd_cm2":201,"sensitivity_db":93,"mms_grams":38,"rms":11.9,"cms":0.13,"bl_tm":16,"le_mh":0.19},"physical":{"overall_diameter_mm":210,"bolt_circle_diameter_mm":195,"baffle_cutout_diameter_mm":186.88,"mounting_holes":"8","depth_mm":128.3,"net_weight_kg":4.9,"xmax_mm":"6.35","xmech_mm":"25"},"materials":{"surround":"fabric","cone_dome":"Paper GF","spider":"Nomex"},"content":{"key_features":["Nonparallel voice and low frequency reproduction quality","Patented magnetic circuit and air venting design","Extremely low harmonic distortion"],"design_notes":"The 81XR was designed to be simply the best driver for 2-way and multi-way systems on the market, yet this driver will also shine in sub-woofer applications. The combination of our XR patented technology with static shorting coil brings an nonparallel opportunity to the audio designers. The common request for 2-way speakers is \u201cmore of everything\u201d. Designers wishes for more bass, more mids. Well, there you have it! But not only that. We bring this with clarity in the mid-frequencies and undistorted bass. Our designers were able to achieve THD below 0.5% from 20Hz up to 2.5kHz. There isn\u2019t another driver like this on the market.\n\nMotor Design\nThe magnetic design incorporates large neodymium magnets placed along the voice coil winding, together with the 2nd and static coil placed on the pole piece. This has allowed us to push the cone excursion to 30mm peak to peak, while lowering the inductance. The shorting coil covers the complete main coil excursion. This is also an improvement compared to some previous designs on the market that utilizes static coil. Unique gap side venting ensures good air circulation, lowers air noise and greatly improves the reliability of this driver.","hero_text":null,"ai_summary":"The 81XRX8-424A is a 8-inch mid-woofer driver designed for professional 2-way and multi-way systems with 93.0 dB sensitivity (1W\/1m). The motor and suspension are optimized to maintain consistent performance at high drive levels, with controlled excursion and reduced thermal compression during long-term operation.\n\nThe driver is intended for use with moderate amplification (approx. 200 W AES \/ 400 W continuous) and DSP control. A high-pass filter in the range of 47-67 Hz is recommended depending on enclosure tuning, along with proper limiting to manage thermal and mechanical stress. Typical operating bandwidth is 50-2500 Hz, covering bass through upper-mid frequencies for direct integration with a compression driver or tweeter in a two-way or multi-way system.\n\nThis design is particularly effective in single or multi-driver bass reflex systems used in professional two-way and multi-way PA systems, powered monitors, and compact bass-reflex enclosures, where extended bandwidth, controlled distortion across the full operating range, and versatile system integration are required.","recommended_enclosure":"Recommended enclosure alignments (bass reflex):\n- 6 liters tuned to 77 Hz: high output, strong mid-bass, reduced excursion; -3 dB approx. 71 Hz, HP filter 69 Hz\n- 8 liters tuned to 68 Hz: balanced response, general-purpose (recommended); -3 dB approx. 58 Hz, HP filter 58 Hz\n- 10 liters tuned to 59 Hz: extended low-frequency, requires HP filter protection; -3 dB approx. 50 Hz, HP filter 47 Hz"},"assets":{"photos":["https:\/\/redcatt.net\/storage\/products\/web\/DR-8-012-8R-B2-C0001-photo1.png","https:\/\/redcatt.net\/storage\/products\/web\/DR-8-012-8R-B2-C0001-photo2.png","https:\/\/redcatt.net\/storage\/products\/web\/DR-8-012-8R-B2-C0001-photo3.png","https:\/\/redcatt.net\/storage\/products\/web\/DR-8-012-8R-B2-C0001-photo4.png","https:\/\/redcatt.net\/storage\/products\/web\/DR-8-012-8R-B2-C0001-photo5.png"],"freq_response_image":"https:\/\/redcatt.net\/storage\/products\/web\/DR-8-012-8R-B2-C0001-freqResponseImpedance.jpg","drawing_2d_pdf":"https:\/\/redcatt.net\/storage\/products\/downloads\/DR-8-012-8R-B2-C0001-drawing2dPdf.pdf","drawing_2d_image":"https:\/\/redcatt.net\/storage\/products\/web\/DR-8-012-8R-B2-C0001-drawing2dJpg.jpg","step_3d":"https:\/\/redcatt.net\/storage\/products\/downloads\/DR-8-012-8R-B2-C0001-step3d.step"}},{"code":"DR-8-014-8R-B2-C0001","name":"82FHW","slug":"dr-8-014-8r-b2-c0001","description":"Woofer\/8inch\/Ferrite\/Aluminium\/60W\/8ohm","url":"https:\/\/redcatt.net\/products\/dr-8-014-8r-b2-c0001","category":"LF","type":"Mid-Woofer","size_inches":8,"is_featured":false,"general":{"nominal_impedance":"8","magnet":"Ferrite","basket_material":"Aluminum"},"power_handling":{"aes_watts":"60","continuous_watts":"120","peak_watts":"240"},"voice_coil":{"diameter":"38","wire":"Copper","former":"Aluminum","winding_height":"15.9"},"thiele_small_parameters":{"fs_hz":42,"re_ohm":5.7,"qes":0.76,"qms":3.1,"qts":0.61,"vas_liters":33.6,"sd_cm2":213.8,"sensitivity_db":88.31,"mms_grams":28.3,"rms":2.41,"cms":0.51,"bl_tm":7.56,"le_mh":0.47},"physical":{"overall_diameter_mm":223.5,"bolt_circle_diameter_mm":210,"baffle_cutout_diameter_mm":189,"mounting_holes":"6","depth_mm":87.5,"net_weight_kg":1.8,"xmax_mm":"5.45","xmech_mm":"10.45"},"materials":{"surround":"NBR","cone_dome":"Aluminum","spider":"Nomex"},"content":{"key_features":["EXTENDED FREQUENCY RESPONSE","Hard anodized aluminum cone with rubber surround","Aluminum basket"],"design_notes":"82FHM is mid-woofer driver, designed for hi-fi, studio monitors and outdoor applications. Design sports hard-anodized aluminum cone and dustcap. These two key components extend the working range of the woofer. The parameters were optimized for usage in sealed enclosures. \n\tAll metal parts are coated to further increase weatherized protection, surround has UV stabilizers. \n\tStrong aluminum basket was used in this design which further improves the mechanical fatigue and allow the speaker to be used in demanding portable products. \n\tFurther more, we have developed new magnetic circuit for this model. Our clever engineering takes the best balance between the performance and cost. Rest assure we have FEM optimized air-venting of this design that minimizes the air-noise and greatly improves voice coil winding venting.","hero_text":null,"ai_summary":"The 82FHMX8-445A is an 8-inch mid-woofer designed for outdoor hi-fi systems, bar and hospitality installations, and two-way domestic enclosures. It features a hard-anodized aluminum cone and dustcap, UV-stabilized NBR rubber surround, coated aluminum basket, and Nomex spider, providing weatherized construction rated from -30  degC to +70  degC. With a sensitivity of 88.31 dB (1 W\/1 m) and a Qts of 0.61, this driver uses a compliant suspension design suited to moderate-volume enclosures with extended low-frequency response.\n\nFor high-output bar and outdoor applications, vented (bass reflex) enclosures of 35-70 litres tuned to 33-48 Hz are a supplementary option, using a 75 mm round port of approximately 164-174 mm length across all three tunings.\n\nThe 82FHMX8-445A handles approx. 60 W AES and 120 W continuous power. A high-pass filter in the 40-80 Hz range is recommended depending on alignment and application. The operating bandwidth is approximately 50-1,300 Hz, with cone beaming onset near 1,327 Hz and inductance rolloff near 1,930 Hz; a crossover to a dome tweeter or compression driver at 1.5-3.0 kHz is required in all two-way systems. DSP or passive high-pass filtering is mandatory in compact satellite alignments to prevent over-excursion below the box tuning frequency.\n\nThis driver is suited for single-driver two-way sealed enclosures in outdoor hi-fi speakers, patio and garden speakers, bar and restaurant background-music satellite cabinets, bookshelf and stand-mount monitors, subwoofer-satellite home audio systems, and surface-mount or column speakers in humidity- and UV-exposed installed audio environments. The weatherized materials and aluminum cone construction prioritize long-term durability and consistent acoustic performance across varying environmental conditions.","recommended_enclosure":"Recommended enclosure alignments (bass reflex):\n- 14 liters tuned to 48 Hz: high output, strong mid-bass, reduced excursion; -3 dB approx. 44 Hz, HP filter 40 Hz\n- 16 liters tuned to 44 Hz: balanced response, general-purpose (recommended); -3 dB approx. 40 Hz, HP filter 34 Hz\n- 18 liters tuned to 40 Hz: extended low-frequency, requires HP filter protection; -3 dB approx. 34 Hz, HP filter 28 Hz"},"assets":{"photos":["https:\/\/redcatt.net\/storage\/products\/web\/DR-8-014-8R-B2-C0001-photo1.jpg","https:\/\/redcatt.net\/storage\/products\/web\/DR-8-014-8R-B2-C0001-photo2.jpg"],"freq_response_image":"https:\/\/redcatt.net\/storage\/products\/web\/DR-8-014-8R-B2-C0001-freqResponseImpedance.jpg","drawing_2d_pdf":"https:\/\/redcatt.net\/storage\/products\/downloads\/DR-8-014-8R-B2-C0001-drawing2dPdf.pdf","drawing_2d_image":"https:\/\/redcatt.net\/storage\/products\/web\/DR-8-014-8R-B2-C0001-drawing2dJpg.jpg","step_3d":"https:\/\/redcatt.net\/storage\/products\/downloads\/DR-8-014-8R-B2-C0001-step3d.step"}},{"code":"DR-8-020-4R-B2-C0001","name":"8FHW","slug":"dr-8-020-4r-b2-c0001","description":"Woofer\/8inch\/Ferrite\/Paper\/200W\/4ohm","url":"https:\/\/redcatt.net\/products\/dr-8-020-4r-b2-c0001","category":"LF","type":"Woofer","size_inches":8,"is_featured":false,"general":{"nominal_impedance":"4","magnet":"Ferrite","basket_material":"Steel"},"power_handling":{"aes_watts":"200","continuous_watts":"400","peak_watts":"800"},"voice_coil":{"diameter":"35.6","wire":"Copper","former":"Aluminum","winding_height":"25.4"},"thiele_small_parameters":{"fs_hz":41,"re_ohm":4,"qes":0.75,"qms":4.2,"qts":0.6,"vas_liters":19.6,"sd_cm2":202.3,"sensitivity_db":84.4,"mms_grams":45.9,"rms":2.81,"cms":0.33,"bl_tm":7.88,"le_mh":0.72},"physical":{"overall_diameter_mm":214,"bolt_circle_diameter_mm":204,"baffle_cutout_diameter_mm":181,"mounting_holes":"8","depth_mm":105,"net_weight_kg":2.1,"xmax_mm":"8.7","xmech_mm":"16.7"},"materials":{"surround":"NBR","cone_dome":"Paper GF","spider":"Conex"},"content":{"key_features":["Heavy-duty rubber surround and paper cone","Ideal for small subwoofers, hi-fi applications","High power handling"],"design_notes":"The 8FHW is 8-inch low frequency woofer with linear frequency response characteristics, high power handling capability while generating low harmonic distortion artifacts.\nThe single roll rubber surround design allows the cone to travel in long linear motion. Together with lightweight, yet strong cone,this combination provides remarkable strength, high efficiency and a excursion linearity of 13mm (one direction).\n\nMagnetic Circuit\nREDCATT engineers have developed an efficient, ferrite based magnetic circuit, capable of delivering the high level of performance providing a consistent, high integrity magnetic flux gap, low distortion characteristic. The magnetic circuit design is optimized to generate the minimum amount of flux modulation, providing exceptional stability.","hero_text":null,"ai_summary":"The 8FHWX4-088 is an 8-inch ferrite woofer designed for hi-fi subwoofer and home audio applications requiring deep bass extension, high excursion linearity, and low harmonic distortion. It features a 1.4-inch copper voice coil on an aluminum former with 25.4 mm winding height, a lightweight paper cone with a long-excursion single-roll rubber surround, and a ferrite motor circuit optimized for minimum flux modulation and low distortion. With 8.7 mm of linear excursion (16.7 mm mechanical), 200 W AES \/ 400 W continuous power handling, and a 4-ohm nominal impedance, the driver provides substantial low-frequency displacement capability for its size class.\n\nFor applications requiring deeper anechoic extension, vented or passive radiator configurations in 8 to 11 liters tuned between 39 and 47 Hz extend the -3 dB point to approximately 33-43 Hz. Port lengths exceed 500 mm at these tuning frequencies, making folded slot ports or passive radiators the practical implementation choices. A passive radiator of similar Sd and excursion capability, tuned to 40-45 Hz, provides clean bass extension without port noise artifacts and is the recommended alternative to vented loading for compact hi-fi subwoofer enclosures.\n\nThis driver is particularly effective in compact sealed and passive-radiator hi-fi subwoofers, bookshelf-paired bass modules, and home theater systems where deep, controlled bass from a small enclosure is required. The flux-modulation-optimized ferrite motor, long-excursion rubber surround, and high mechanical clearance (16.7 mm) provide consistent, low-distortion performance across the driver's full excursion range.","recommended_enclosure":"Recommended enclosure alignments (bass reflex):\n- 8 liters tuned to 47 Hz: high output, strong mid-bass, reduced excursion; -3 dB approx. 43 Hz, HP filter 39 Hz\n- 10 liters tuned to 43 Hz: balanced response, general-purpose (recommended); -3 dB approx. 40 Hz, HP filter 33 Hz\n- 10 liters tuned to 39 Hz: extended low-frequency, requires HP filter protection; -3 dB approx. 33 Hz, HP filter 27 Hz"},"assets":{"photos":["https:\/\/redcatt.net\/storage\/products\/web\/DR-8-020-4R-B2-C0001-photo1.jpg","https:\/\/redcatt.net\/storage\/products\/web\/DR-8-020-4R-B2-C0001-photo2.jpg","https:\/\/redcatt.net\/storage\/products\/web\/DR-8-020-4R-B2-C0001-photo3.jpg"],"freq_response_image":"https:\/\/redcatt.net\/storage\/products\/web\/DR-8-020-4R-B2-C0001-freqResponseImpedance.jpg","drawing_2d_pdf":"https:\/\/redcatt.net\/storage\/products\/downloads\/DR-8-020-4R-B2-C0001-drawing2dPdf.pdf","drawing_2d_image":"https:\/\/redcatt.net\/storage\/products\/web\/DR-8-020-4R-B2-C0001-drawing2dJpg.jpg","step_3d":"https:\/\/redcatt.net\/storage\/products\/downloads\/DR-8-020-4R-B2-C0001-step3d.step"}},{"code":"DR-8-022-4R-B2-C0001","name":"8FHW","slug":"dr-8-022-4r-b2-c0001","description":"Mid-Woofer\/8inch\/Ferrite\/PP\/100W\/4ohm","url":"https:\/\/redcatt.net\/products\/dr-8-022-4r-b2-c0001","category":"LF","type":"Mid-Woofer","size_inches":8,"is_featured":false,"general":{"nominal_impedance":"4","magnet":"Ferrite","basket_material":"Steel"},"power_handling":{"aes_watts":"100","continuous_watts":"200","peak_watts":"400"},"voice_coil":{"diameter":"30.5","wire":"Copper","former":"Aluminum","winding_height":"15.3"},"thiele_small_parameters":{"fs_hz":36,"re_ohm":3.3,"qes":0.38,"qms":4.53,"qts":0.35,"vas_liters":34.3,"sd_cm2":213.8,"sensitivity_db":89.12,"mms_grams":36.59,"rms":1.83,"cms":0.53,"bl_tm":8.6,"le_mh":0.89},"physical":{"overall_diameter_mm":209.5,"bolt_circle_diameter_mm":197,"baffle_cutout_diameter_mm":184.5,"mounting_holes":"8","depth_mm":86.5,"net_weight_kg":1.5,"xmax_mm":"3.65","xmech_mm":"11.65"},"materials":{"surround":"NBR","cone_dome":"PP","spider":"Nomex"},"content":{"key_features":["Mid-woofer designed for outdoor or indoor applications","UV stabilized Polypropylene cone and rubber surround","Components are treated to survive harsh outdoor environments"],"design_notes":"8FHW was designed as mid-woofer, with extended frequency response to low frequencies, as well as good extension into the mid-frequencies. All parts are intensively treated for outdoor usage, cone, surround material are with UV stabilizers. The used adhesives make sure the driver is waterproof.\n\n\tThe cone utilizes polypropylene material and rubber surround. This combination sports sizable amounts of low frequencies and good behavior in the higher mid-frequencies.","hero_text":null,"ai_summary":"The 8FHWX4-382 is a 8-inch sub-woofer driver designed for compact hi-fi subwoofer systems, home audio, and cost-effective installation applications. It operates at 89.1 dB sensitivity (1W\/1m). The motor and suspension are optimized to maintain consistent performance at high drive levels, with controlled excursion and reduced thermal compression during long-term operation.\n\nThe driver is intended for use with moderate amplification (approx. 100 W AES \/ 200 W continuous) and DSP control. A high-pass filter in the range of 22-33 Hz is recommended depending on enclosure tuning, along with proper limiting to manage thermal and mechanical stress. Typical operating bandwidth is 29-100 Hz, suitable for integration with a mid-bass or full-range driver in a two-way system.\n\nThis design is particularly effective in single or multi-driver bass reflex systems used in hi-fi, home theater, and cost-conscious installation applications, where a balance of low-frequency extension, compactness, and value are the primary priorities.","recommended_enclosure":"Recommended enclosure alignments (bass reflex):\n- 20 liters tuned to 41 Hz: high output, strong mid-bass, reduced excursion; -3 dB approx. 38 Hz, HP filter 33 Hz\n- 24 liters tuned to 38 Hz: balanced response, general-purpose (recommended); -3 dB approx. 35 Hz, HP filter 28 Hz\n- 24 liters tuned to 34 Hz: extended low-frequency, requires HP filter protection; -3 dB approx. 29 Hz, HP filter 22 Hz"},"assets":{"photos":["https:\/\/redcatt.net\/storage\/products\/web\/DR-8-022-4R-B2-C0001-photo1.jpg","https:\/\/redcatt.net\/storage\/products\/web\/DR-8-022-4R-B2-C0001-photo2.jpg"],"freq_response_image":"https:\/\/redcatt.net\/storage\/products\/web\/DR-8-022-4R-B2-C0001-freqResponseImpedance.jpg","drawing_2d_pdf":"https:\/\/redcatt.net\/storage\/products\/downloads\/DR-8-022-4R-B2-C0001-drawing2dPdf.pdf","drawing_2d_image":"https:\/\/redcatt.net\/storage\/products\/web\/DR-8-022-4R-B2-C0001-drawing2dJpg.jpg","step_3d":"https:\/\/redcatt.net\/storage\/products\/downloads\/DR-8-022-4R-B2-C0001-step3d.step"}},{"code":"DR-8-023-8R-B2-C0001","name":"8FIND","slug":"dr-8-023-8r-b2-c0001","description":"Woofer\/8inch\/Ferrite\/Paper\/200W\/8ohm","url":"https:\/\/redcatt.net\/products\/dr-8-023-8r-b2-c0001","category":"LF","type":"Mid-Woofer","size_inches":8,"is_featured":false,"general":{"nominal_impedance":"8","magnet":"Ferrite","basket_material":"Aluminum"},"power_handling":{"aes_watts":"200","continuous_watts":"400","peak_watts":"800"},"voice_coil":{"diameter":"50.8","wire":"CCAW","former":"Glass Fiber","winding_height":"12.4"},"thiele_small_parameters":{"fs_hz":70,"re_ohm":5.7,"qes":0.25,"qms":6.4,"qts":0.25,"vas_liters":18.2,"sd_cm2":227,"sensitivity_db":97.33,"mms_grams":20.7,"rms":1.42,"cms":0.25,"bl_tm":14.3,"le_mh":0.48},"physical":{"overall_diameter_mm":209.5,"bolt_circle_diameter_mm":197.5,"baffle_cutout_diameter_mm":185,"mounting_holes":"8","depth_mm":91.5,"net_weight_kg":3.73,"xmax_mm":"2.2","xmech_mm":"10.2"},"materials":{"surround":"fabric","cone_dome":"Paper GF","spider":"Nomex"},"content":{"key_features":["EXTENDED FREQUENCY RESPONSE, high efficiency","Carbon fiber loaded and reinforced paper cone","Nomex spider"],"design_notes":"The 8FIND is a high efficiency, (97 dB 1watt \/ 1 meter) 8-inch mid bass woofer with incredibly linear frequency response characteristics, high power handling capability while generating low harmonic distortion artifacts.\nThe 8FIND uses a lightweight carbon fiber loaded cone assembly along with a precision double roll surround. This combination provides remarkable strength, high efficiency and a excursion linearity of 9.4mm.\n\nMagnetic Circuit\nREDCATT engineers have developed an efficient, ferrite based magnetic circuit, capable of delivering the highest level of performance providing a consistent, high integrity magnetic flux gap, low distortion characteristic. The magnetic circuit design is optimized to generate the minimum amount of flux modulation, providing exceptional stability.","hero_text":null,"ai_summary":"The 8FINDX8-030 is an 8-inch high-efficiency ferrite mid-woofer designed for professional two-way, multi-way, and installation loudspeaker systems where maximum sensitivity and controlled low-distortion performance are required. With a sensitivity of 97 dB (1W\/1m), a 2-inch CCAW voice coil on a glass fiber former, and a lightweight carbon fiber loaded paper cone with a precision double roll fabric surround, the driver achieves a very low Qts of 0.25. The motor and suspension are optimized to maintain consistent performance at high drive levels, with controlled excursion and reduced thermal compression during long-term operation.\n\nThe driver is rated for approximately 200 W AES \/ 400 W continuous power handling and is intended for use with DSP-controlled amplification. A high-pass filter in the range of 41-56 Hz (24 dB\/octave Linkwitz-Riley) is recommended depending on enclosure tuning, with a typical crossover to a high-frequency driver at 1.5-3 kHz. Below tuning frequency, excursion increases and high-pass protection is required to manage mechanical stress, particularly given the modest linear excursion capability. The driver's extreme sensitivity means high SPL is achievable with moderate amplifier power.\n\nThis driver is particularly effective in high-efficiency 2-way portable loudspeakers, compact PA tops, stage monitors, and installation systems where maximum sensitivity, extended frequency response, and low distortion are priorities. The carbon fiber loaded paper cone, flux-modulation-optimized ferrite motor, and aluminum basket provide consistent, durable performance in demanding professional environments.","recommended_enclosure":"Recommended enclosure alignments (bass reflex):\n- 22 liters tuned to 66 Hz: high output, strong mid-bass, reduced excursion; -3 dB approx. 56 Hz, HP filter 58 Hz\n- 24 liters tuned to 58 Hz: balanced response, general-purpose (recommended); -3 dB approx. 49 Hz, HP filter 48 Hz\n- 24 liters tuned to 55 Hz: extended low-frequency, requires HP filter protection; -3 dB approx. 47 Hz, HP filter 43 Hz"},"assets":{"photos":["https:\/\/redcatt.net\/storage\/products\/web\/DR-8-023-8R-B2-C0001-photo1.jpg","https:\/\/redcatt.net\/storage\/products\/web\/DR-8-023-8R-B2-C0001-photo2.jpg","https:\/\/redcatt.net\/storage\/products\/web\/DR-8-023-8R-B2-C0001-photo3.jpg"],"freq_response_image":"https:\/\/redcatt.net\/storage\/products\/web\/DR-8-023-8R-B2-C0001-freqResponseImpedance.jpg","drawing_2d_pdf":"https:\/\/redcatt.net\/storage\/products\/downloads\/DR-8-023-8R-B2-C0001-drawing2dPdf.pdf","drawing_2d_image":"https:\/\/redcatt.net\/storage\/products\/web\/DR-8-023-8R-B2-C0001-drawing2dJpg.jpg","step_3d":"https:\/\/redcatt.net\/storage\/products\/downloads\/DR-8-023-8R-B2-C0001-step3d.step"}},{"code":"DR-8-027-4R-B2-C0001","name":"8FR","slug":"dr-8-027-4r-b2-c0001","description":"Full-Range\/8inch\/Ferrite\/Paper\/4ohm","url":"https:\/\/redcatt.net\/products\/dr-8-027-4r-b2-c0001","category":"LF","type":"Fullrange","size_inches":8,"is_featured":true,"general":{"nominal_impedance":"4","magnet":"Ferrite","basket_material":"Aluminum"},"power_handling":{"aes_watts":"30","continuous_watts":"60","peak_watts":"120"},"voice_coil":{"diameter":"40.6","wire":null,"former":"kapton","winding_height":"17.6"},"thiele_small_parameters":{"fs_hz":53,"re_ohm":3.8,"qes":0.396,"qms":8.47,"qts":0.378,"vas_liters":36.8,"sd_cm2":213.8,"sensitivity_db":93,"mms_grams":18.38,"rms":0.72,"cms":0.49,"bl_tm":7.86,"le_mh":0.08},"physical":{"overall_diameter_mm":210,"bolt_circle_diameter_mm":195.5,"baffle_cutout_diameter_mm":186.88,"mounting_holes":"8","depth_mm":91.8,"net_weight_kg":2.55,"xmax_mm":"5.8","xmech_mm":"11.8"},"materials":{"surround":"fabric","cone_dome":"Paper","spider":"Nomex"},"content":{"key_features":["lighweight, yet strong paper cone reinforced by bamboo fibers","working range up to 15kHz","aesthetics tuned for moder hi-fi look"],"design_notes":"8FR was developed for Hi-Fi applications where single point audio source is required. Our engineers designed the cone to be lightweight, yet strong, using our new paper pulp reinforced by bamboo fibers. The driver sports wizard cone that extends the working range up to 15kHz, paired with bullet style phase plug. Combination of these two key features ensures smooth frequency response and an optimal sound reproduction on and off axes. \nMagnetic circuit was design to deliver robust B field across the whole range of working frequencies. Additional copper shorting cup further improves the driver behavior in mid-high working region. \nThe aesthetics of this driver were tuned to support modern hi-fi system designs, where the driver can be exposed to the end user. Distinctive colors ensures the driver can be featured as part of the overall industrial design.","hero_text":null,"ai_summary":"The 8FRX4-551A is an 8-inch full-range driver designed for hi-fi applications where a single-point audio source is required, including open baffle, sealed, and vented loudspeaker systems. It features a lightweight bamboo fiber reinforced paper cone with an integrated whizzer (secondary) cone for extended high-frequency response to 15 kHz, a bullet-style phase plug for controlled off-axis dispersion, and a 1.6-inch aluminum voice coil on a Kapton former. The ferrite motor circuit with copper shorting cup and extremely low voice coil inductance (0.08 mH) provide flat impedance behavior and clean, wide-bandwidth reproduction from a single driver. At 93 dB sensitivity (1W\/1m) with a moving mass of only 18.4 grams, the driver is efficient and fast, with good transient response across its full operating range.\n\nFor enclosed alternatives, sealed enclosures of 15 to 50 liters produce system resonances between 70 and 98 Hz with Qtc values of 0.5 to 0.7. A 25-liter sealed enclosure (Qtc 0.6, fc 83 Hz) is the recommended starting point, providing a smooth overdamped rolloff that integrates naturally with domestic room gain for in-room bass extension to approximately 55-60 Hz. Vented enclosures of 27 to 37 liters tuned between 48 and 61 Hz extend the anechoic -3 dB point to approximately 41-56 Hz with moderate port velocities (11-14 m\/s). In all configurations, the driver is rated for 30 W AES \/ 60 W continuous power handling, which is appropriate for domestic listening levels given the 93 dB sensitivity.\n\nThis driver is particularly effective in hi-fi open baffle loudspeakers, single-driver sealed or vented cabinets, and full-range desktop monitors where point-source imaging, wide-bandwidth reproduction from a single driver, and natural tonal character are priorities. The bamboo fiber cone, whizzer cone extension to 15 kHz, and aesthetically refined design (exposed aluminum basket, distinctive colorway) support both high sound quality and modern industrial design integration.","recommended_enclosure":"Recommended enclosure alignments (bass reflex):\n- 20 liters tuned to 61 Hz: high output, strong mid-bass, reduced excursion; -3 dB approx. 56 Hz, HP filter 53 Hz\n- 24 liters tuned to 56 Hz: balanced response, general-purpose (recommended); -3 dB approx. 52 Hz, HP filter 46 Hz\n- 24 liters tuned to 50 Hz: extended low-frequency, requires HP filter protection; -3 dB approx. 42 Hz, HP filter 38 Hz"},"assets":{"photos":["https:\/\/redcatt.net\/storage\/products\/web\/DR-8-027-4R-B2-C0001-photo1.jpg","https:\/\/redcatt.net\/storage\/products\/web\/DR-8-027-4R-B2-C0001-photo2.jpg","https:\/\/redcatt.net\/storage\/products\/web\/DR-8-027-4R-B2-C0001-photo3.jpg","https:\/\/redcatt.net\/storage\/products\/web\/DR-8-027-4R-B2-C0001-photo4.jpg","https:\/\/redcatt.net\/storage\/products\/web\/DR-8-027-4R-B2-C0001-photo5.png"],"freq_response_image":"https:\/\/redcatt.net\/storage\/products\/web\/DR-8-027-4R-B2-C0001-freqResponseImpedance.jpg","drawing_2d_pdf":"https:\/\/redcatt.net\/storage\/products\/downloads\/DR-8-027-4R-B2-C0001-drawing2dPdf.pdf","drawing_2d_image":"https:\/\/redcatt.net\/storage\/products\/web\/DR-8-027-4R-B2-C0001-drawing2dJpg.jpg","step_3d":"https:\/\/redcatt.net\/storage\/products\/downloads\/DR-8-027-4R-B2-C0001-step3d.step"}},{"code":"DR-8-028-8R-B2-C0001","name":"8NPM","slug":"dr-8-028-8r-b2-c0001","description":"Mid-Woofer\/8inch\/Neo\/Paper\/200W\/8ohm","url":"https:\/\/redcatt.net\/products\/dr-8-028-8r-b2-c0001","category":"LF","type":"Mid-Woofer","size_inches":8,"is_featured":false,"general":{"nominal_impedance":"8","magnet":"Neodymium","basket_material":"Aluminum"},"power_handling":{"aes_watts":"200","continuous_watts":"400","peak_watts":"800"},"voice_coil":{"diameter":"50.8","wire":"CCAW","former":"Kapton","winding_height":"15.4"},"thiele_small_parameters":{"fs_hz":79,"re_ohm":5.4,"qes":0.31,"qms":3.85,"qts":0.29,"vas_liters":10.9,"sd_cm2":213.8,"sensitivity_db":96.06,"mms_grams":23.9,"rms":3.1,"cms":0.17,"bl_tm":14.2,"le_mh":0.6},"physical":{"overall_diameter_mm":209.5,"bolt_circle_diameter_mm":197.5,"baffle_cutout_diameter_mm":185,"mounting_holes":"8","depth_mm":87.3,"net_weight_kg":1.8,"xmax_mm":"3.7","xmech_mm":"11.7"},"materials":{"surround":"fabric","cone_dome":"Paper CF","spider":"Nomex"},"content":{"key_features":["Hi sensitivity","Hi power handling","Designed for applications where are sizable amounts of mid-frequencies required"],"design_notes":"The 8NPM is a high efficiency, (96dB 1watt \/ 1 meter) 8-inch mid-woofer with extended mid frequency response and high power handling capability. The 8NPM uses a lightweight half pressed paper cone along with a double roll fabric surround. Spider is made of Nomex material with optimized shape for well controlled pistonic motion. The used high quality components ensure long lasting performance even in high powered applications. The chosen material combination provides remarkable strength, high efficiency and  sustained output under extreme conditions. \n\nPower Handling\nThe voice coil featuring Kapton former material capable of withstanding peak temperatures in excess of 280C, well beyond the thermal requirements of modern audio systems. Former strength provides the ideal transfer of power between the voice coil and the cone assembly and assists in reducing distortion artifacts. By combining this material with state of the art adhesives and our winding voice coil technology, the 8NPM delivers incredibly high performance.","hero_text":null,"ai_summary":"The 8NPMX8-157 is an 8-inch high-efficiency neodymium mid-woofer designed for professional two-way, multi-way, and line array systems requiring high sensitivity (96 dB 1W\/1m), extended mid-frequency response, and sustained high-power operation. It features a 2-inch CCAW voice coil on a Kapton former with peak temperature tolerance exceeding 280 degC, a lightweight half-pressed paper cone with a double roll fabric surround, and a Nomex spider with optimized geometry for controlled pistonic motion. With a low Qts of 0.29 and strong neodymium motor (Bl 14.2 T.m), the motor and suspension are optimized to maintain consistent performance at high drive levels, with controlled excursion and reduced thermal compression during long-term operation.\n\nThe driver requires active DSP crossover management in both configurations. In vented mid-woofer use, a high-pass filter in the range of 53-72 Hz (24 dB\/octave Linkwitz-Riley) is recommended depending on enclosure tuning, with a typical crossover to a high-frequency driver at 1.5-3 kHz. In sealed midrange use, a high-pass filter in the range of 180-350 Hz is recommended depending on enclosure volume and system architecture. In both cases, appropriate limiting is required to manage mechanical stress during sustained operation, though the Kapton former provides exceptional thermal headroom.\n\nThis driver is particularly effective in professional touring line arrays, compact 2-way portable loudspeakers, multi-way point-source cabinets, stage monitors, and installation systems where versatility across mid-woofer and midrange roles, high sensitivity, high power handling, and extended mid-frequency performance are priorities. The neodymium motor, Kapton former, and aluminum basket provide consistent, durable performance in demanding professional environments.","recommended_enclosure":"Recommended enclosure alignments (bass reflex):\n- 10 liters tuned to 82 Hz: high output, strong mid-bass, reduced excursion; -3 dB approx. 75 Hz, HP filter 74 Hz\n- 12 liters tuned to 72 Hz: balanced response, general-purpose (recommended); -3 dB approx. 61 Hz, HP filter 62 Hz\n- 14 liters tuned to 63 Hz: extended low-frequency, requires HP filter protection; -3 dB approx. 54 Hz, HP filter 51 Hz"},"assets":{"photos":["https:\/\/redcatt.net\/storage\/products\/web\/DR-8-028-8R-B2-C0001-photo1.jpg","https:\/\/redcatt.net\/storage\/products\/web\/DR-8-028-8R-B2-C0001-photo2.jpg","https:\/\/redcatt.net\/storage\/products\/web\/DR-8-028-8R-B2-C0001-photo3.jpg"],"freq_response_image":"https:\/\/redcatt.net\/storage\/products\/web\/DR-8-028-8R-B2-C0001-freqResponseImpedance.jpg","drawing_2d_pdf":"https:\/\/redcatt.net\/storage\/products\/downloads\/DR-8-028-8R-B2-C0001-drawing2dPdf.pdf","drawing_2d_image":"https:\/\/redcatt.net\/storage\/products\/web\/DR-8-028-8R-B2-C0001-drawing2dJpg.jpg","step_3d":"https:\/\/redcatt.net\/storage\/products\/downloads\/DR-8-028-8R-B2-C0001-step3d.step"}},{"code":"DR-6.5-001-4R-B2-C0001","name":"61FHM","slug":"dr-65-001-4r-b2-c0001","description":"Mid-Woofer\/6.5inch\/Ferrite\/PP\/50W\/4ohm","url":"https:\/\/redcatt.net\/products\/dr-65-001-4r-b2-c0001","category":"LF","type":"Mid-Woofer","size_inches":6.5,"is_featured":false,"general":{"nominal_impedance":"4","magnet":"Ferrite","basket_material":"Steel"},"power_handling":{"aes_watts":"50","continuous_watts":"100","peak_watts":"200"},"voice_coil":{"diameter":"25.4","wire":"Copper","former":"Aluminum","winding_height":"12.4"},"thiele_small_parameters":{"fs_hz":44,"re_ohm":3.2,"qes":0.58,"qms":5.27,"qts":0.52,"vas_liters":14.4,"sd_cm2":132.7,"sensitivity_db":86.03,"mms_grams":23.04,"rms":1.21,"cms":0.57,"bl_tm":6.02,"le_mh":0.74},"physical":{"overall_diameter_mm":165.5,"bolt_circle_diameter_mm":157,"baffle_cutout_diameter_mm":143,"mounting_holes":"4","depth_mm":68,"net_weight_kg":1.04,"xmax_mm":"3.2","xmech_mm":"9.2"},"materials":{"surround":"NBR","cone_dome":"PP","spider":"Nomex"},"content":{"key_features":["EXTENDED FREQUENCY RESPONSE"],"design_notes":"61FHM  mid-woofer was designed for outdoor applications, yet it will shine in hi-fi home and studio applications as well.\n\tOptimized ferrite based magnetic circuit with good air-venting features ensures long lasting performance.\n\tOur engineers have chosen polypropylene cone with rubber surround for this model. Both of these components are produced with UV stabilizers. Furthermore, REDCATT state of the art adhesives and dispensing techniques ensures waterproof seals in all weather exposed glue joints. Sealing to the exposure can be guaranteed by EVA gaskets or based upon a request by Form In Place Gaskets.\n\tThe audio system designers can rest assured we have extensively tested this product with UV exposure, salt exposure and waterproofing.\n\tThe extended mid-frequency response allows the systems to be used with higher resonance frequency HF units. For the best performance in the audio systems, we recommend usage in vented enclosures.","hero_text":null,"ai_summary":"The 61FHMX4-381 is a 6.5-inch ferrite mid-woofer rated at 50 W AES (100 W continuous) into a nominal 4-ohm load. Sensitivity is 86.0 dB (1 W\/1 m). The Qts of 0.52 reflects a balanced motor-suspension design that provides good cone control while maintaining usable output across its operating bandwidth, with vented enclosures recommended for best low-frequency extension. The polypropylene cone with NBR rubber surround is designed for outdoor and weather-exposed applications, with UV-stabilized materials, weatherproofed adhesive joints, and EVA or form-in-place gasket sealing options. The extended mid-frequency response characteristic of this model enables crossover to compression drivers or tweeters at higher frequencies than a standard 6.5-inch mid-woofer.\n\nThe driver is rated for approximately 50 W AES (100 W continuous) and is intended for use with amplification typical of compact 2-way professional audio products. A high-pass filter at 45-60 Hz (18-24 dB\/octave) is recommended for vented alignments. The extended mid-frequency response supports crossover integration with compression drivers or dome tweeters from approximately 2 to 4 kHz. DSP-controlled active crossovers are preferred in outdoor installation systems where precise system alignment and protection filtering are required.\n\nThe 61FHMX4-381 is suited for compact 2-way outdoor PA systems, commercial installed sound in weather-exposed locations, portable PA satellite cabinets, and hi-fi applications requiring environmental durability. Good to use with weather-sealed dome tweeters such as 25TFX4-431A, or with 1-inch compression drivers such as 101FCDX8-539A or 101NCDX8-160 in compact 2-way outdoor PA top cabinets.","recommended_enclosure":"Recommended enclosure alignments (bass reflex):\n- 8 liters tuned to 51 Hz: high output, strong mid-bass, reduced excursion; -3 dB approx. 47 Hz, HP filter 43 Hz\n- 8 liters tuned to 46 Hz: balanced response, general-purpose (recommended); -3 dB approx. 42 Hz, HP filter 36 Hz\n- 10 liters tuned to 42 Hz: extended low-frequency, requires HP filter protection; -3 dB approx. 36 Hz, HP filter 30 Hz"},"assets":{"photos":["https:\/\/redcatt.net\/storage\/products\/web\/DR-6.5-001-4R-B2-C0001-photo1.jpg","https:\/\/redcatt.net\/storage\/products\/web\/DR-6.5-001-4R-B2-C0001-photo2.jpg"],"freq_response_image":"https:\/\/redcatt.net\/storage\/products\/web\/DR-6.5-001-4R-B2-C0001-freqResponseImpedance.jpg","drawing_2d_pdf":"https:\/\/redcatt.net\/storage\/products\/downloads\/DR-6.5-001-4R-B2-C0001-drawing2dPdf.pdf","drawing_2d_image":"https:\/\/redcatt.net\/storage\/products\/web\/DR-6.5-001-4R-B2-C0001-drawing2dJpg.jpg","step_3d":"https:\/\/redcatt.net\/storage\/products\/downloads\/DR-6.5-001-4R-B2-C0001-step3d.step"}}],"links":{"first":"https:\/\/redcatt.net\/api\/v1\/products?page=1","last":"https:\/\/redcatt.net\/api\/v1\/products?page=3","prev":null,"next":"https:\/\/redcatt.net\/api\/v1\/products?page=2"},"meta":{"current_page":1,"from":1,"last_page":3,"links":[{"url":null,"label":"« Previous","page":null,"active":false},{"url":"https:\/\/redcatt.net\/api\/v1\/products?page=1","label":"1","page":1,"active":true},{"url":"https:\/\/redcatt.net\/api\/v1\/products?page=2","label":"2","page":2,"active":false},{"url":"https:\/\/redcatt.net\/api\/v1\/products?page=3","label":"3","page":3,"active":false},{"url":"https:\/\/redcatt.net\/api\/v1\/products?page=2","label":"Next »","page":2,"active":false}],"path":"https:\/\/redcatt.net\/api\/v1\/products","per_page":50,"to":50,"total":106}}