The combination of Definitive Technology's highly refined bipolar array technology with the BP2006TL's extremely narrow baffles results in an exceptionally large sound field with tremendous depth as well as breadth and height of image. This tremendous sound stage combined with a built in, powered, subwoofer in each speaker that takes frequency response down to 19Hz, make the BP2006TL a stealth super speaker in a class by itself. Specifications:Dimensions: 61/4"W x 111/2"D x 38"H. Response: 19Hz-30 kHz. Efficiency: 92 dB. Drivers: 2-4 1/2" high definition cast-magnesium basket polymer upper bass/mid range drivers. 2-1" pure aluminum dome tweeters. One 8" subwoofer w/ 250-watt RMS amp. Connections: Gold plated five-way bindingposts and optional separate LFE inputs. Rec. Amp.: 20-250 watts. Nominal Imp.: 4-8ohms. Auto On/Off: Signal sensing. Finish: piano gloss black. Weight: 46 lb In great condition. $450 o.b.o.