A two-way with its own rear volume
CWM7.5 S2 puts a forward-facing Flowport and integral back box in a compact frame.
The Bowers & Wilkins CWM7.5 S2 pair needs 331 × 187 mm openings, with each frame measuring 356 × 212 mm. It takes 102 mm behind the wall and projects by 8 mm. If using the pre-mount kit, the cut-out becomes 336 × 192 mm; decide which set of dimensions applies before preparing the structure.
Key features
- Cut-out 331 × 187 mm; frame 356 × 212 mm; depth 102 mm.
- 130 mm Continuum bass/midrange and 25 mm Carbon Dome.
- 8-ohm impedance (3.8-ohm minimum); recommended 25–150 W.
- Front Flowport; integral back box; 336 × 192 mm cut-out with PMK 7.5W.
Stereo, multiroom or rear channel
A 130 mm Continuum bass/midrange driver and 25 mm Carbon Dome tweeter form the two-way. The front-firing Flowport works with an integral back box that helps contain sound transfer between rooms. It can serve stereo, multiroom or a rear cinema channel. The taller, narrower CWM7.4 S2 instead uses four 100 mm units in a 2.5-way arrangement.
Space beyond the opening
The rear enclosure measures 385 × 181 mm: check its clearance as well as the visible cut. Nominal impedance is 8 ohms with a 3.8-ohm minimum; sensitivity is 86 dB and recommended power 25 to 150 W into 8 ohms. Response is 45 Hz to 28 kHz within ±3 dB. PMK 7.5W is the specified kit. For the pair, opening alignment and distance from internal structure matter as much as the listening position.
Sensitivity matches CWM7.4 S2 at 86 dB, but the minimum impedance falls to 3.8 ohms rather than 4.9 ohms. That affects amplifier selection if different models share a cinema system. Standard and pre-mount-kit openings are not interchangeable: mark the panel to the dimensions of the actual configuration. Keep the front Flowport unobstructed when placing the speaker near furniture or trim.
