Absolute USA CDEB12BK Dual 12-Inch Ported Enclosure Subwoofer Box (Black) Dual 12" Ported Enclosure Subwoofer Box Rear Silver Vented Design specially Treated Foam Surround Covered Heavy-Duty Black Carpeting Compatible with any brand of 12 "Subwoofer, KICKER, ALPINE, SONY, ROCKFORD, PIONEER, ETC,