Bowers & Wilkins CWM-LCR8 Owner's Manual & Warranty page 34

Technical features
Frequency range
Frequency response
Nominal impedance
Crossover frequency
Recommended amplifier power
Min depth req
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CWM LCR8
Very high rigidity glass-filled resin baffle
Aluminium cone bass drivers
Woven Kevlar® bass/midrange drivers
Nautilus™ tube-loaded tweeter
Description 2 1 ⁄ -way in-wall speaker system
2
Drive units 1x ø25mm (1 in) tube-loaded aluminium dome high-frequency
2x ø130mm (5 in) woven Kevlar® cone bass/midrange
2x ø130mm (5 in) aluminium cone bass
-6dB at 35Hz and 50kHz
45Hz-22kHz ±3dB on reference axis
Sensitivity 91dB spl (2.83V, 1m)
8Ω (minimum 4.5Ω)
3.5kHz
150W into 8Ω on unclipped programme
Frame size 708mm (27.9 in) x 219m (8.6 in)
Cut-out size 668mm(26.3 in) x 180mm(7.1 in)
89.2mm (3.5 in) behind mounting surface
Net weight 8.0kg (17.6 lb)