Polk Audio TL150 Speaker (5-pack， Black)<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>High-Performance 5-Piece Surround System</li><li>Tl1 Satellite Aperiodio-Tuned Rear Port</li><li>Tl1 Center Channel-Tuned Rear Port</li><li>.5 inches Silk-Dome Tweeters</li><li>Time Lens Technology</li><li>Time Lens Technology-The acoustic centers of the tweeter and mid-bass driver are located in the same plane for superior imaging</li><li>TL1 Satellite Aperiodic-Tuned Rear Port enables better blending with a subwoofer</li></ul></div><img src="http://ecx.images-amazon.com/images/I/31uLfIDkrcL.jpg" noproxy>