NHT N-12B Classic Twelve Subwoofer (Black) (Discontinued by Manufacturer) Frequency Response 27Hz-180Hz (+/- 3dB) / 12 inch aluminum cone driver (Not Video Shielded) Dimensions (WxHxD) - 13.03 x 20.125 x 15.75 inches (331mm x 512mm x 400mm) / Weight - 49 lbs / 22.1 kg