Amazon.com: Sundown Audio SA-8 V.3 D2 8" 500W RMS Dual 2-Ohm SA Series Subwoofer : Electronics
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