Proficient C606 6.5" 2-Way Poly Ceiling Speakers (Pair) 6" Polypropylene Woofers Impedance: 8 3/4" Soft Dome Tweeters Sensitivity: 90dB 1W/1m Power Handling: 75 Watts Diameter x Depth: 9" x 3-5/8" Frequency Response: 45Hz - 20kHz Ceiling Cut Out: 8" Replaces C605 Ceiling Speakers Includes Thin-Bezel Grilles held by Neo Magnets