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Pioneer TS-W310D4 Champion Series 12" subwoofer with dual 4-ohm voice coils at Crutchfield
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2014 Pioneer Champion Series PRO Subwoofer - YouTube
TS-W2502D2|D4 - 10" Champion Series PRO Subwoofer with 3000 Watts Max. (800 Watts Nom.) | Pioneer Electronics USA
Pioneer TS-W309D4 12" 1400 Watt Subwoofer Dual 4 Ohm Car Sub Champion Series | Audio Savings
Pioneer Champion Series 12" Dual-Voice-Coil 4-Ohm Subwoofer Black TSW311D4 - Best Buy
Best Buy: Pioneer Champion Series 10" 1000W Dual-Voice-Coil 4-Ohm Subwoofer TS-W257D4
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PIONEER TS-W3003D4 Champion Series PRO 12" 2,000-Watt Subwoofer
Amazon.com: Pioneer TS-A301D4 Champion Series 12" 1600 W Max Power, Dual 4 Ohm Voice Coil - Component Subwoofer : Electronics
Product - Pioneer
Pioneer TS-W260S4 10" 1,200-Watt Champion Series Component Subwoofer - Single 4 ohm voice coil
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Pioneer TS-A301S4 Champion Series TS-A301S4 12-Inch 1,600-Watt-Max Single-Voice-Coil 4-Ohm Component Subwoofer - Walmart.com
