Stereo from one opening
CCM664SR combines two channels in one ceiling speaker.
The single Bowers & Wilkins CCM664SR uses a 202 mm cut-out, requires 133 mm behind the surface and has a 240 mm frame with 4 mm front projection. It suits a zone where two separate mounting points would be difficult or excessive. Wiring still carries two channels even though only one speaker is visible.
Key features
- Cut-out 202 mm; frame 240 mm; depth 133 mm.
- Drive units: 150 mm twin-voice-coil glass-fibre bass/midrange and two 20 mm soft-dome tweeters.
- Impedance: 8 ohm, 4 ohm minimum per channel; power: 25–80 W per channel recommended.
- stereo/surround switch; QuickDogs
The SR arrangement
A twin-voice-coil 150 mm glass-fibre bass/midrange driver works with two offset soft-dome tweeters. The stereo/surround selector adapts the unit to the role of the zone. Compared with standard CCM664, this is a change in channel configuration, not merely an alternative finish.
System figures
Recommended amplifier power is 25 to 80 W per channel and nominal impedance 8 ohms per channel, with a 4-ohm minimum. Sensitivity is 82 dB per channel, or 88 dB with both driven. The -6 dB range is 48 Hz to 30 kHz. QuickDogs fittings aid installation; a C6 kit and 6C back box are listed.