Theater Solutions C4 Center Channel Speaker (Black) 4" Dual composite cone 8 ohm woofers, video shielded, 2 way passive design 15 - 200 Watts recommended power, 75Hz - 20KHz (+/- 3dB) frequency response, 91dB sensitivity Black ash, digitally tuned enclosure, hang tab on rear for mounting Quick release spring loaded raw wire speaker terminals, acoustically transparent grill Applications include home theater, surround sound system and whole house audio