Sony SA-W3000/Z Subwoofer (Each, Black) 12" 180-Watt powered subwoofer Mica-reinforced cellular woofer construction Motion feedback technology Speaker and line level inputs 20-200Hz frequency response 12" 180-watt powered subwoofer Mica-reinforced cellular woofer construction Motion feedback technology Speaker and line level inputs 20-200Hz frequency response for powerful bass