System Type 2-way in-ceiling loudspeaker Woofer 6.5" long-throw polypropylene cone Tweeter 3 x 1" fluid cooled soft dome (NHT Patented Three Tweeter Array) Crossover 1.9kHz, 18dB/octave high-pass, 12dB/octave low pass Frequency Response 50Hz - 20kHz, +/- 3d Sensitivity 85dB (2.83V at 1M) Impedance 8 ohms nominal Recommended Amplifier Power 10W/ch minimum, 125W/ch maximum Inputs 2 each professional grade, gold plated spring posts Weight 5 lbs. Cutout Dimensions 8 13/16" dia. Bezel Dimensions 9 11/16" dia. Depth Behind Wall 4 13/16" Finish Matte white (paintable)