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Bowers & Wilkins CWM7.3 S2 in wall speaker

Bowers & Wilkins CWM7.3 S2 in wall speaker

See nothing, hear everything

The CWM7.3 S2 features an integrated backbox that optimises its performance, cuts down on sound transference through walls and also makes it easy to retrofit. Its design incorporates twin 150mm (6in) Aerofoil profile bass drivers, a 100mm (4in) Continuum cone FSTTM mid-range driver and a Carbon Dome 25mm (1in) tweeter, all proven technologies shared with the acclaimed 700 Series range of loudspeakers. These outstanding tranducers, when combined with high-quality, optimised, components on the crossover and a critically formed baffle constructed from glass reinforced ABS, produce a truly remarkable in-wall speaker.

Technical Specification

Carbon Dome tweeter, Continuum cone FST midrange Aerofoil profile bass cones Flowport™


3-way in-wall system

Drive units

1x ø25mm (1 in) Carbon Dome high-frequency1x ø100mm (4 in) Continuum cone FST midrange 2x ø150mm (6 in) Aerofoil profile bass

Frequency range

(-6dB) -6dB at 43Hz and 33kHz

Frequency Response

-3dB45Hz - 28kHz ±3dB


90dB spl (2.83Vrms, 1m)

Harmonic distortion

2nd and 3rd harmonics (90dB, 1m) <1% 80Hz - 33kHz <0.5% 120Hz - 33kHz

Nominal impedance

8Ω (minimum 3.1Ω)

Recommended amplifier power

25W - 200W into 8Ω on unclipped programme

Frame height

736mm (29in)

Frame width

276mm (11in)

Depth (behind surface)

102mm (4.02in)

Cut-out height

711mm (28in)

Cut-out width

251mm (9.9in)

Cut-out height w/PMK

715mm (28.1in)

Cut-out width w/PMK

256mm (10.1in)

Reservoir box height

460mm (18.1in)

Reservoir box width

220mm (8.7in)


7mm (0.28in)



Net weight

12.4kg (27.32lb)


Back box: White

Grille: White

*Product description, details and specification subject to change. Please check the manufacturer's website for the most recent information. Errors and omissions excepted.