Bowers & Wilkins CCM664 In-Ceiling Speaker

Bowers & Wilkins CCM664 In-Ceiling Speaker – Performance Series Two-Way

The Bowers & Wilkins CCM664 is a two-way in-ceiling speaker from the Performance Series, designed for homes that want proper Bowers & Wilkins sound from a fitting that all but disappears into the ceiling. It pairs a 150 mm woven glass-fibre bass and midrange driver with a 25 mm soft-dome tweeter, a driver combination chosen for a smooth, detailed presentation across music and film soundtracks. The woven glass-fibre cone keeps the midrange stiff and controlled, while the soft dome gives high frequencies a natural character that suits long listening sessions better than a hard metallic edge.

What lifts the CCM664 above basic ceiling speakers is its adjustability. The tweeter can be tilted towards the listening position, with angle markers at the central, 15-degree and 30-degree positions, and a three-position high-frequency EQ switch compensates for the tonal change that comes with aiming the tweeter off axis. In real rooms, ceiling speakers rarely sit directly above the seats, so this aiming is what turns a convenient position into a correct stereo image at the sofa.

Key features

• 150 mm woven glass-fibre bass and midrange driver
• 25 mm soft-dome tweeter with adjustable tilt
• Three-position high-frequency EQ switch for off-axis tuning
• Frequency range of 45 Hz to 35 kHz
• QuickDogs mounting and magnetic, paintable grille
• 202 mm cut-out with 133 mm depth behind the ceiling surface

Sound and system roles

The published frequency range runs from 45 Hz to 35 kHz at -6 dB, with sensitivity of 87 dB at 2.83V and 1 metre. Nominal impedance is 8 ohms with a 4.5 ohm minimum, and Bowers & Wilkins recommends amplifier power between 25 and 130 watts, comfortably within the range of mainstream AV receivers and multiroom amplifiers. In practice the CCM664 works across the roles a custom installation demands: stereo music in kitchens and living areas, distributed audio through a home, surround channels, and height channels in an immersive system, where its tilting tweeter helps direct effects towards the seating rather than the floor.

Installation: frame, cut-out and depth

The frame diameter is 240 mm and the ceiling cut-out is 202 mm. Depth behind the finished surface is 133 mm, and installers should allow roughly 140 mm of clear depth for the speaker and its connections. The fitting protrudes just 4 mm from the ceiling. The QuickDogs fixing system clamps the frame into place without separate tools or brackets, and the modular construction with a removable baffle makes wiring and servicing straightforward. The grille attaches magnetically and, with the frame, can be painted to match the ceiling. An optional square grille is available, along with the C6 pre-mount kit for new-build ceilings and the 6C back box where sound containment matters.

Planning the amplifier and layout

The CCM664 is a passive speaker: it needs an amplifier channel and a source, and it contains no streaming or wireless electronics of its own. Plan positions around the seating first, confirm joist locations and cavity depth before cutting, and run cable while the ceiling is open.

As a discreet route into Bowers & Wilkins sound, the CCM664 balances the three things ceiling speakers are judged on: genuine hi-fi driver engineering, the adjustability to aim that performance at the listener, and installation dimensions that work in real ceiling voids.