Bowers & Wilkins CCM664SR Dual Channel In-Ceiling Speaker
These are passive speakers, so they need an amplifier to power them (8Ω, 25–80W/ch recommended). Either of these will drive a pair and stream music from your phone.
If the ceiling has a bedroom or other living space above it, or is part of an escape route, building regulations require each speaker to have a fire hood. Hoods also cut sound leaking into the room above.
Stereo from a single speaker needs a 4-core cable (left and right channels on one run). Allow about 10m back to the amplifier. Webro 16/4 LSZH (low smoke, zero halogen) is the right cable for runs in ceilings and walls.
The Bowers & Wilkins CCM664SR is a dual-channel in-ceiling speaker that delivers genuine stereo sound from a single mounting point, making it an excellent choice for bathrooms, hallways, kitchens, and any room where fitting a conventional stereo pair isn't practical. Drawing on B&W's studio monitor heritage, it combines precise engineering with a design that blends unobtrusively into any ceiling.
Why we like it
- Full stereo imaging from one compact ceiling unit, saving on installation complexity
- Two-way design pairs a 150mm woven glass fibre bass/midrange cone with dual 20mm soft dome tweeters for detailed, balanced sound
- Stereo/Surround switch adds flexibility for use in multi-room or home cinema surround setups
- QuickDogs tool-free fixing system makes for quick, secure installation
- Low-profile bezel and magnetic, paintable grille sit flush for a near-invisible finish
Installation notes
The CCM664SR requires a 202mm cut-out and a mounting depth of 133mm behind the ceiling surface, with the bezel protruding just 4mm once fitted. A pre-mounting kit (PMKC6) and optional back box (BB 6C) are available to simplify first-fix and improve acoustic performance in open ceiling voids. As a single-speaker stereo solution, it pairs well with compact streaming amplifiers such as a WiiM Amp or Sonos Amp, giving you full stereo playback without running a pair of speakers and cable runs to a single zone.
Specifications
| Configuration | 2-way dual channel in-ceiling system |
| Drive Units | 2 x 20mm soft dome tweeters, 1 x 150mm woven glass fibre bass/midrange |
| Frequency Range (-6dB) | 48 Hz - 30 kHz |
| Sensitivity | 88 dB (both channels driven) |
| Nominal Impedance | 8 ohm |
| Power Handling | 25-80W per channel |
| Frame Diameter | 240mm |
| Cut-out Diameter | 202mm |
| Depth Behind Surface | 133mm |
| Protrusion | 4mm |
| Warranty | 5 years |



