Stage Right by Monoprice LM15A 1000W 15in Powered Subwoofer Speaker with Class D and DSP - Monoprice.com
BOSS Audio Systems D12F Phantom Series 12 Inch Car Audio Subwoofer - 1000 Watts Max, Single 4 Ohm Voice Coil, Sold Individually, Low Profile, For Truck Boxes and Enclosures, Hook Up To Amplifier
Sundown Audio Xv4 8" inch DVC Dual 2 Ohm 1000 Watt (X Series) Car Subwoofer
Rockville RVP15W4 1000 Watt 15" Raw DJ Subwoofer 4 Ohm Sub Woofer 51OZ Magnet