Alpine SWR-1222D Type-R 12" subwoofer with dual 2-ohm voice coils at Crutchfield
Alpine Type R 12 Inch 2250 Watt Max 4 Ohm Round Car Audio Subwoofer | R-W12D4 - Walmart.com
Amazon.com: Alpine ALP19-R-W12D2x2wKit Car Audio Type R Dual 2 Ohm 1500 Watt 12" Subwoofers with Sub Install Kit and HA-SWKD Dual Sub Box Install Kit - 16 Screws and Speaker Wire with
Alpine type r 12" testing new jl amp (flexing!) - YouTube
ALPINE TYPE-R Twelve SWR-1240 | Sub Woofer Speakers | Croooober
Alpine SWR-1241D 12" Dual 4-ohm Voice Coil Subwoofer at Crutchfield