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10" Subwoofer with Built-In Amp - JW10A - Jensen Mobile
MTX TNP212D2 Bass Package Dual 12" sealed enclosure with 250-watt mono amplifier at Crutchfield
Amazon.com: PIONEER TS-WX1220AH Dual 12" Ported Enclosure Active Subwoofer with Built-in Amplifier, Black : Electronics
Dual Electronics TBX10A 10 inch Shallow High Performance Powered Enclosed Subwoofer with Built-In Amplifier & 300 Watts of Peak Power for Sale in Houston, TX - OfferUp