Acoustic Audio TL3 Center Channel Speaker (Black) 4" Dual cone woofers, video shielded, 2 way passive design, 8 ohm 15 - 150 Watts recommended power, 80Hz - 20KHz (+/- 3dB) frequency response, 90dB sensitivity Digitally tuned bass reflex cabinet enclosure, hang tab on rear for mounting, acoustically transparent grill Quick release raw wire speaker terminals, black ash wood grain veneer finish Applications include surround sound, home theater and whole house audio