R-W12 Alpine Type R 12 Inch 2250 Watt Max 4 Ohm Round Car Audio Subwoofer %7C R%2DW12D4
Alpine R2-SB12V Single Type R2 12-in Subwoofer in Vented Enclosure - Creative Audio
Breathing Life back into this 16 year old Alpine Type-R 15" subwoofer... - YouTube
Alpine R2-W12D2 12" 750w RMS Car Subwoofer Sub+(2) Stereo Bluetooth Speakers - Rockville Audio
Alpine Type R 12' SWR1243D Subwoofer
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 SWR-1222D Type-R 12" subwoofer with dual 2-ohm voice coils at Crutchfield