PIONEER TS-W311S4 CHAMPION SERIES 12" 4-OHM SUBWOOFER 1,400 WATT (400 W RMS) NEW 842372101424 | eBay
Amazon.com: Pioneer TSW312D4 Champion Series 12" 1500 Watt Dual 4 Ohm Voice Coil DVC Car Subwoofer : Electronics
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