BishopSound BDP12 12" Woofer Recone Kit - Speakers from Prebeat UK
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Amazon.com: Orion HCCA122 (RK) 12-Inch, Dual 2 Ohm, Replacement Recone Kit for Powerful Black Coil HCCA Series Subwoofers - Do-It-Yourself Kit for HCCA122, Pro Car Audio : Electronics