Infinity CS80R 2-Way 8" Round In-Ceiling Loudspeaker TheCS80R is a round 2-way in-ceiling speaker for usein a wide variety of applications, from stereo and whole-house music systems to complete home theaters. The CS80R incorporates a pivoting tweeter that allows you to aim the tweeter towards the listening area for great sound anywhere in the room. Thewhite grilles and frames are paintable and allow the speakers to blend into any decor. Specifications: Frequency Response: 45Hz 20kHz (3dB); 32Hz (-10dB) Recommended Amplifier Power Range: 10 - 100 watts Sensitivity (2.83V 1m): 89dB Nominal Impedance: 8 ohms Crossover Frequency: 2,400Hz; 12dB/octave Low-Frequency Driver: 8" (200mm) High-Frequency Driver: 1" (25mm) Dimensions: Diameter: 10-7/8" (275mm) Mounting Depth: 4-1/4" (108mm) Cut-Out Diameter:9-1/2" (240mm) (Dia.) Weight: 5.6 lb (2.5kg)