Bowers & Wilkins CCM684 is the entry point among the CI 600 range of 8in in-ceiling speakers, the two-way CCM684 features a 200mm (8in) woven glass fibre cone bass/midrange driver and a soft dome tweeter. Great bass depth and scale are available due to the 8 inch woofer, making these great for multiple applications like, rear effects, music zones or all round custom theatre. Features: Woven glass fibre cone bass/midrange driver and a soft dome tweeter in a neat circular ceiling mount chassis. Tweeter housing pivots for adjustable off-axis treble response Three-position EQ switch QuickDogs™ and plug-and-play functionality make installation a breeze. Description: 2-way dual channel in-ceiling system Drive Units: 1x ø25mm (1in) soft dome tweeter, 1x ø200mm (8in) black glassfibre cone bass/midrange Frequency Range (-6dB): 335Hz – 35kHz Recommended Amp Power: 25 – 130w Sensitivity SPL (2.83V, 1m): 88dB Impedance Nominal (min): 8Ω (4.5Ω) Supplied as pair Description 2-way in-ceiling system Drive Units 1x ø25mm (1in) soft dome tweeter 1x ø200mm (8in) black glassfibre cone bass/midrange Frequency Range (-6dB) 35Hz – 35kHz Recommended Amp Power 25 – 130w Sensitivity SPL (2.83V, 1m) 88dB Impedance Nominal (min) 8Ω (4.5Ω) Frame diameter 290mm (11.4in) Cut-out diameter 250mm (9.8in) Depth behind surface 133mm (5.2in) Protrusion 4mm (0.2in) Pre-mount Kit C8 Back Box 6C