- Glass fiber and rib reinforced paper cone
- fem optimized air circulation
- Silicone sealed surround
- 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. Power HandlingAt the core of the 15FIND is it’s voice coil technology featuring a composite Polyimide former material capable of withstanding peak temperatures in excess of 250°C, well beyond the thermal requirements of modern professional audio systems. Winding if winded on the outside
- and inside of the former. REDCATT 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 increase heat transfer and cooling of the parts.
General specs Nominal Diameter: 15 in. Rated Impedance: 8 Ohm Power handling AES Power: 1,000 Watts Program Power: 2,000 Watts Voice Coil Diameter: 4 in. Winding wire: Copper Former: kapton Winding height: 25.5 mm T/S Parameters Resonant frequency: 42 Hz Re: 5.4 ohm Qes: 0.37 Qms: 8.31 Qts: 0.36 Vas: 96.4 liters Sd: 881 cm2 Mms: 159.6 grams Bl: 24.6 Le: 1.18 mH Sensitivity: 96.65 dB Design details Surround Material: Fabric Cone material: Paper Spider: Nomex Plate thickness: 12 mm Peak to peak linear cone Displacement 21 mm Overall diameter: 392 mm Bolt circle diameter: 373 mm Baffle cutout dia.: 360 mm Number of mounting holes: 8 Depth (flange to rear): 150 mm Net weight: 12 kg Ordering codes: 8 ohm version: 15FINDX8-035 Recone kits: Download: Spec download 2D drawing 3D model
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PRODUCT CODE: 15FINDX8-035
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--- ENCLOSURE RECOMMENDATIONS ---
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ENCLOSURE RECOMMENDATIONS: 15FINDX8-035
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Driver: 15FINDX8-035 (15FIND) — 15" Sub-woofer
Key T/S: Fs=42.0Hz, Qts=0.36, Vas=96.4L, Sens=96.65dB
Power: AES 1000W / Cont 2000W / Peak 4000W
Xmax=6.75mm, Sd=881.0cm², Bl=24.6T·m
RECOMMENDED ENCLOSURE TYPE: Bass Reflex (Vented)
PORT RECOMMENDATION: Round port (100mm diameter) — compact cabinet may benefit from precision-tuned cylindrical port
a) High SPL
Net Volume: 75 liters
Tuning (Fb): 48 Hz
Est. -3dB: 44 Hz
HP Filter: 40 Hz (24dB/oct recommended)
Round Port: 100mm dia × 63mm long
Slot Port: 288mm W × 60mm H × 192mm L
Port Velocity: 22.9 m/s
Notes: Strong mid-bass impact, reduced cone excursion, maximum output
b) Balanced Response
Net Volume: 85 liters
Tuning (Fb): 42 Hz
Est. -3dB: 39 Hz
HP Filter: 32 Hz (24dB/oct recommended)
Round Port: 100mm dia × 78mm long
Slot Port: 288mm W × 60mm H × 224mm L
Port Velocity: 20.1 m/s
Notes: General-purpose PA/subwoofer, even response, good transient behavior
c) Extended Low Frequency
Net Volume: 100 liters
Tuning (Fb): 37 Hz
Est. -3dB: 31 Hz
HP Filter: 25 Hz (24dB/oct recommended)
Round Port: 100mm dia × 96mm long
Slot Port: 288mm W × 60mm H × 263mm L
Port Velocity: 17.5 m/s
Notes: Deep bass extension, requires proper system protection below tuning
--- Summary ---
The 15FINDX8-035 is a 15-inch high-output sub-woofer driver designed for professional subwoofer 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.
In bass reflex enclosures, the driver performs best in net internal volumes of 75 to 100 liters, tuned between 37 and 48 Hz. This alignment provides a balanced combination of low-frequency extension, cone control around resonance, and efficient port loading. Lower tuning improves deep bass extension but increases excursion below tuning, requiring appropriate high-pass filtering. Higher tuning increases sensitivity and output in the upper bass region while improving mechanical control.
The driver is intended for use with high-power amplification (approx. 1000 W AES / 2000 W continuous) and DSP control. A high-pass filter in the range of 25–40 Hz is recommended depending on enclosure tuning, along with proper limiting to manage thermal and mechanical stress. Typical operating bandwidth is 31–100 Hz, making it suitable for integration with mid-bass or full-range systems.
This 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.
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