Monitor Audio C165 In-Ceiling Speaker (Single Speaker) Incorporating a 6 1/2 inch MMP II bass driver with Monitor Audio’s signature C-CAM Gold Dome tweeter to provide high performance sound, ease-of-drive, and wide frequency response and dispersion. Optimum imaging and set-up are established via a pivoting tweeter and high-frequency (+3 dB / 0 dB /-3 dB) level adjustment. Optional square or premium grille can be used with this model. Specification Frequency Response 60 Hz – 25 kHz Nominal Impedance 6 ohms Sensitivity (1W@1M) 88.5 dB Maximum SPL 107.4 dBA Power Handling (RMS) 65 W Recommended Amplifier Requirements 20 – 65 W Drive Unit Complement 6 1/2" MMP II cone bass driver 1" C-CAM pivoting Gold Dome tweeter Adjustment Controls HF Level Switch (+3 dB / 0 dB / -3 dB) Overall Diameter (Including Grille) 250 mm (913/16") Overall Depth (Including Grille) 120 mm (43/4") Mounting Depth 116 mm (49/16") Cut-Out Hole Diameter 211 mm (81/4") Optional Square Grille - Outer Dimensions 249 x 249 mm (9 3/16") Fixing Type 3 position Tri-Grip dog fixings Construction Material Mineral filled ABS, RoHS compliant Weight 1.92 kg (4 lb 4 oz) Pre-Construction Bracket CB6 Pre-Construction Bracket (Purple) Back Box CCBOX-R / CMBOX-RMonitor, Audio, C165, In-Ceiling, Speaker, Ceiling, Monitor Audio, Monitor Audio c165, Monitor Audio Ceiling speaker, Monitor Audio C165 In-Ceiling Speaker, Monitor Audio C165 In Ceiling Speaker, MONITORCEILING