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(2) Pioneer Champion TS-W310S4 12" 2800 Watt Subwoofers+Vented Sub Box Enclosure
2) Pioneer Champion TS-W310S4 12" 2800 Watt Subwoofers+Vented Sub Box Enclosure
Amazon.com: Pioneer TSW312D4 Champion Series 12" 1500 Watt Dual 4 Ohm Voice Coil DVC Car Subwoofer : Electronics
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