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Sundown Audio SAv3 8" inch DVC Dual 4 Ohm (SA Series) Car Subwoofer 500 Watts RMS
BOSS Audio Systems P156DVC Phantom Series 15 Inch Car Audio Subwoofer – 2500 Watts Max, Dual 4 Ohm Voice Coil, Sold Individually, For Truck Boxes and Enclosures, Hook Up To Amplifier
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Alphasonik Venum 800 Series 12" Car Audio Subwoofer | Alphasonik