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KICKER CWCS154 CompC 15" Subwoofer Single Voice Coil 4-Ohm
Amazon.com: (2) Kicker 43CVR152 COMPVR 11000W DVC 2-Ohm Car Subwoofer Bundle with Dual Sub Box Enclosure Installation Kit and Rockville RD15 Dual 15 2.1 cu.ft. 3/4" MDF Sealed Car Sub Enclosure Box :
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Amazon.com: Kicker (2) CWS15 Car Audio CompC Subwoofer 15" Sub 44CWCS154 Bundle with Harmony HA-A800.1 Amplifier & Amp Kit : Electronics