C606 InCeiling Series Whole House Series C606 ‹ › Technical Data: 6½" Polypropylene Woofer 3/4" Soft Dome Tweeter Power Handling75 Watts Frequency Response45Hz – 20kHz Impedance8Ω Sensitivity91dB 1W/1m Diameter x Depth9¼" x 3 5/8" Ceiling Cut Out8¼" Replaces C605 Ceiling Speaker