LF
Woofer
18"
181XR
Code: 181XRX4-350
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, reinforced cone edge.
Quick Specs
Impedance
4 Ω
Program Power
2400 W
Sensitivity
96.54 dB
Fs
30.00 Hz
Magnet
Neodymium
Voice Coil
101.6 mm
Design Notes
Designed based upon the 18XR, the 181XR was designed for professional audio segment.
The 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.
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 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.
The 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.
The 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.
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 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.
The 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.
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)
30.00 Hz
Re
3.30 \u2126
Qes
0.240
Qms
13.20
Qts
0.230
Vas
195.00 liters
Sd
1256.60 cm\u00B2
Mms
306.00 grams
Rms
4.37
Cms
0.0900
Bl
28.30 T\u00B7m
Le
1.300 mH
Sensitivity
96.54 dB
Design Details
Surround Material
fabric
Cone/Dome Material
Paper GF
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
14.50 kg
Ordering Codes
Product Code
181XRX4-350
Downloads
Frequency Response & Impedance
2D Drawing
Enclosure Recommendations
Recommended enclosure alignments (bass reflex): - 230 liters tuned to 28 Hz: high output, strong mid-bass, reduced excursion; -3 dB approx. 24 Hz, HP filter 25 Hz - 275 liters tuned to 25 Hz: balanced response, general-purpose (recommended); -3 dB approx. 21 Hz, HP filter 22 Hz - 275 liters tuned to 23 Hz: extended low-frequency, requires HP filter protection; -3 dB approx. 20 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, reinforced cone edge.
Recommended enclosure alignments (bass reflex): - 230 liters tuned to 28 Hz: high output, strong mid-bass, reduced excursion; -3 dB approx. 24 Hz, HP filter 25 Hz - 275 liters tuned to 25 Hz: balanced response, general-purpose (recommended); -3 dB approx. 21 Hz, HP filter 22 Hz - 275 liters tuned to 23 Hz: extended low-frequency, requires HP filter protection; -3 dB approx. 20 Hz, HP filter 20 Hz
High-excursion vented woofer / subwoofer, touring bass bin; low-distortion high-excursion pa applications; weight-critical installs
AES Power: 1200 W,
Continuous: 2400 W,
Peak: 4800 W.
Sensitivity: 96.54 dB (1W/1m).
