Sundown Audio SAv2 18" inch DVC Dual 4 Ohm (SA Series) Car Subwoofer 1000 Watts RMS
Crunch 12 Inch 800 Watt Max 4 Ohm Dual Voice Coil Car Subwoofer Speaker (2 Pack) With 4 Channel 1000 Watt Amp A/b Class Car Stereo Power Amplifier : Target
Amazon.com: BOSS Audio Systems D12F 1000 Watt, 12 Inch , Single 4 Ohm Voice Coil, Shallow Mount Car Subwoofer : Electronics