B&W CCM663

An adjustable two-way in the ceiling

CCM663 lets the treble direction be refined once the mounting position is set.

The Bowers & Wilkins CCM663 pair requires a 202 mm circular opening for each speaker. The 240 mm frame needs 133 mm of depth behind the surface and protrudes by 4 mm at the front. It suits installations where the ceiling structure fixes the position but the high frequencies should still be directed towards the listening seats.

Key features

• Cut-out 202 mm; frame 240 mm; depth 133 mm.
• Drive units: 150 mm Aramid Fibre bass/midrange and 25 mm Nautilus aluminium tweeter.
• Impedance: 8 ohm, 4.5 ohm minimum; power: 25–130 W recommended.
• pivoting tweeter; three-position EQ; QuickDogs

Tweeter and bass/midrange

The 25 mm Nautilus aluminium dome has a pivoting housing, while a three-position EQ switch adjusts off-axis response. A 150 mm Aramid Fibre cone driver sits in a die-cast chassis. CCM663RD follows a similar approach at only 92 mm deep, compared with 133 mm here; that distinction matters in a shallow ceiling void.

Matching and fitting

Sensitivity is 88 dB, nominal impedance 8 ohms with a 4.5-ohm minimum, and recommended amplifier power 25 to 130 W. The -6 dB range is 45 Hz to 50 kHz. QuickDogs fixings assist installation in the cut-out. A C6 pre-mount kit and 6C back box are listed for preparation. Allow access to the terminals and check the clear space above the panel before finishing it.

The two cut-outs define the pair's coverage, but treble direction need not stay fixed with the frame position. That helps where joists or services force the mounting points away from the ideal listening axis. The EQ control provides a further adjustment without changing the opening. Plan access to these controls during final commissioning and keep the two speaker orientations consistent with the listening area.