Amazon.com: JBL 12" Dual 4ohm DVC Car Subwoofer : Electronics
JBL CS1214 1000-watt, 12" Car Audio Subwoofer, Black - Walmart.com
JBL Stage 1200D Stage Series ported enclosure with two 12" subwoofers at Crutchfield
Stage 1220B subwoofer enclosure | Dual 12" Stage subwoofers mounted in a slot-ported enclosure
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