Sonance CR101 In-ceiling Speakers (pair) Product information: Sonance CR101 6.5" In-Ceiling Loudspeaker - Pair Provides maximum performance for affordable cost in a round speaker format with a 6.5" polypropylene woofer. Matched with a fixed position 1/2" cloth dome tweeter, the CR101 resists dampness and weather, has broad smooth dispersion and is driven easily by a Sonos ZP120. Aluminum grille is standard. Clear, detailed sound with great definition. Woofer 6 1/2" (165 mm) Black polypropylene cone with a rubber surround Tweeter 1/2" (12mm) non-pivoting, treated, cloth dome Frequency Response 60 Hz to 20 kHz +/- 3dB SPL: 88 dB 1w 1m Power Handling: 5 watts minimum to 40 watts maximum Impedance 8 ohms nominal Grille Weather-resistant aluminum Dimensions (Dia x D) 9 3/4" (248mm) x 3 3/4" (95mm) Cutout Dimensions (Dia) 8 5/32" (207mm)