Amazon.com: Cadence 8 Inch Car Subwoofer, High Performance 800 Watts Dual 2 Ohm 2 Inch Black Aluminium 4 Layer Voice Coil, Ultra Shock Series Car Audio Woofer US8D2, Single : Electronics
Nemesis NA-8EV.2 D2 1000W Max 8" Dual 2-Ohm Voice Coil DVC Car Audio Subwoofer | eBay
Sundown Audio SAv3 8" inch DVC Dual 2 Ohm (SA Series) Car Subwoofer 500 Watts RMS