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TS-WX1220AH - 12" - 3000w Max Power, Built-In 1200w Output Amplifier - Ported Active Enclosure Subwoofer | Pioneer Electronics USA
TNE212D Dual 12" TERMINATOR Series 800-Watt Peak Power Subwoofer Enclosure | MTX Audio - Serious About Sound®
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Pioneer TS-D12D2 D-Series 12" subwoofer with dual 2-ohm voice coils at Crutchfield
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Pioneer TS-W310D4 Champion Series 12" subwoofer with dual 4-ohm voice coils at Crutchfield
Pioneer TS-A300B Single 12 inch Slot Ported / Vented Pre-Loaded Enclosure Subwoofer - (Dual 4 ohm voice coil)
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Pioneer 12" Dual-Voice-Coil 2-Ohm Subwoofer Black TS-W309D2 - Best Buy