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Amazon.com: SUMEINA 12" Compact Active Subwoofer System, 1000W Car Audio Bass Subwoofer Sub, 120W RMS Subwoofer Enclosure with Integrated Amplifier : Electronics
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TS-WX130DA - 8" x 5-1/4" - 160w Max Power, Built-in 160w Output Class-D Amplifier - Compact Active Subwoofer | Pioneer Electronics USA
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Pyle Active Down Firing Subwoofer - 10 Inches, Ported Design with High-to-Low Input Level Controller, Invisible Down-Firing Speaker, Color Black, Built-in Convenience - PSUB10A - Walmart.com
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Pioneer TS-WX1210AH - 12-inch Ported Enclosure Active Subwoofer with Built-in Amplifier - Walmart.com
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