LF
Sub-woofer
18"
18XR
Code: 18XRX4-304B
Woofer/XR Woofer/18inch/Neo/Paper/1200W/4ohm
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
Quick Specs
Impedance
4 Ω
Program Power
2400 W
Sensitivity
92.07 dB
Fs
21.00 Hz
Magnet
Neodymium
Voice Coil
101.6 mm
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.
Motor Design
The 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.
The 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.
Motor Design
The 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.
The 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.
Specifications
General Specs
Nominal Diameter
18"
Rated Impedance
4 Ohm
Magnet
Neodymium
Basket Material
Aluminum
Power Handling
AES Power
1200 W
Continuous Power
2400 W
Peak Power
4800 W
Voice Coil
Diameter
101.6 mm
Winding Wire
Copper
Former
Glass Fiber
Winding Height
22 mm
T/S Parameters
Resonant Frequency (Fs)
21.00 Hz
Re
3.30 \u2126
Qes
0.360
Qms
17.00
Qts
0.350
Vas
300.00 liters
Sd
1256.60 cm\u00B2
Mms
402.00 grams
Rms
3.12
Cms
0.1400
Bl
22.20 T\u00B7m
Le
0.540 mH
Sensitivity
92.07 dB
Design Details
Surround Material
SBR
Cone/Dome Material
Paper CF
Spider
Nomex
T-Plate
56 mm
Xmax (peak)
17 mm
Xmech
36 mm
Overall Diameter
467.60 mm
Bolt Circle Diameter
442.00 mm
Baffle Cutout Dia.
422.00 mm
Mounting Holes
8
Depth (flange to rear)
257.20 mm
Net Weight
14.70 kg
Ordering Codes
Product Code
18XRX4-304B
Downloads
Frequency Response & Impedance
2D Drawing
Enclosure Recommendations
Recommended enclosure alignments (bass reflex): - 235 liters tuned to 24 Hz: high output, strong mid-bass, reduced excursion; -3 dB approx. 22 Hz, HP filter 25 Hz - 275 liters tuned to 21 Hz: balanced response, general-purpose (recommended); -3 dB approx. 19 Hz, HP filter 22 Hz - 275 liters tuned to 20 Hz: extended low-frequency, requires HP filter protection; -3 dB approx. 17 Hz, HP filter 20 Hz
Frequently Asked Questions
- - 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
Recommended enclosure alignments (bass reflex): - 235 liters tuned to 24 Hz: high output, strong mid-bass, reduced excursion; -3 dB approx. 22 Hz, HP filter 25 Hz - 275 liters tuned to 21 Hz: balanced response, general-purpose (recommended); -3 dB approx. 19 Hz, HP filter 22 Hz - 275 liters tuned to 20 Hz: extended low-frequency, requires HP filter protection; -3 dB approx. 17 Hz, HP filter 20 Hz
High-excursion vented subwoofer, touring bass bin; weight-critical installs
AES Power: 1200 W,
Continuous: 2400 W,
Peak: 4800 W.
Sensitivity: 92.07 dB (1W/1m).
