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Subwoofer Pioneer 12 - Gefcko
Pioneer TS-A301S4 Champion Series TS-A301S4 12-Inch 1,600-Watt-Max Single-Voice-Coil 4-Ohm Component Subwoofer - Walmart.com
TS-W311D4 - 12" Champion Series Subwoofer with Dual 4 Ohm Voice Coil | Pioneer Electronics USA
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Pioneer Premier - Audio System
