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Amazon.com: Pioneer TSW312D4 Champion Series 12" 1500 Watt Dual 4 Ohm Voice Coil DVC Car Subwoofer : Electronics
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TS-W3002D2|D4 - 12" Champion Series PRO Subwoofer with 3500 Watts Max. (1000 Watts Nom.) | Pioneer Electronics USA
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TS-W258D2|D4 - 10" Champion Series Subwoofer with 1200 Watts Max.Power (350 Watts Nominal) | Pioneer Electronics USA
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