Amazon.com: New Dual DLS12 12-Inch 875 Watts 4-Ohm Car Audio Power Subwoofer Sub DLS-12 : Electronics
CAB Ultra 10" inch DVC Dual 4 Ohm (Ultra Series) Car Subwoofer 1500 Watts RMS
BOSS Audio Systems CXX124DVC Chaos Exxtreme Series 12 Inch Car Audio Subwoofer - 1200 Watts Max, Dual 4 Ohm Voice Coil, For Truck, Boxes and Enclosures, Use With Amplifier