JBL SCS300.7 Complete 7.1-Channel Home Cinema Speaker System (Discontinued by Manufacturer) 7.1-channel surround-sound speaker system with 6 timbre-matched satellite speakers and a matched center-channel speaker Includes a 10-inch, 150-watt powered subwoofer, satellite mounting brackets and shelf stands, and all requisite speaker cable Satellites and center speaker use dual 3-inch woofers and .5-inch titanium-laminate dome tweeters Video shielded for distortion-free placement near TVs and computer monitors Signal-sensing auto power on (subwoofer)