Polk Audio CSI A6 Center Channel Speaker (Single, Black)
Overall frequency response 45hz 27khz lower 3dB limit: 55Hz db upper 3dB limit: 26Khz db nominal impedance 8 ohms recommended amplifier power: 20 200 w/channel efficiency: 90 dB inputs: 5 way binding posts Dimensions (why) 24" X 7 3/4" X 14" Enclosure Type: vented with dual power port & Single ARC port 1 1" Diameter (2.54cm) silk polymer dome tweeter 2 6 1/2" Diameter (16.51cm) polymer composite dynamic balance with rubber surround