CAB Ultra 12" inch DVC Dual 2 Ohm (Ultra Series) Car Subwoofer 1500 Watts RMS
Amazon.com: Cadence 8 Inch Car Subwoofer, High Performance 500 Watts Dual 2 Ohm 2 Inch Black Aluminium 4 Layer Voice Coil, Ultra Drive Series Car Audio Woofer UD8D2, Single : Electronics
Ultra Audio LV 12" 500 Watt Car Audio Subwoofer 1000 Watts Max 4 Ohm | eBay
Sundown Audio U18v2 18 inch Dual 4 ohm Subwoofer U Series(1750 watts) – Droppin HZ Car Audio