Bowers & Wilkins CCM663

Bowers & Wilkins CCM663 - In-Ceiling Stereo Speaker Brand new in the box Speaker System Type: 2-channel in-ceiling speaker system Suitable for: Stereo sound or surround sound channel Audio Performance Bass response: Down to 48Hz Treble response: Up to 30kHz Recommended amplifier power: 25-80 watts per channel Speaker Drivers Tweeters: Two 1-inch (20mm) soft dome tweeters Woofer: One 6-inch (150mm) blue Aramid fiber cone woofer Sensitivity 83 dB (per channel) 89 dB (both channels driven) Impedance 8 ohms nominal (4 ohms minimum) per channel Dimensions Cut-out diameter: 8 inches (202mm) Mounting depth: 5.2 inches (133mm) Protrusion from ceiling: 0.2 inches (4mm)