SWR-12D4 | 2250W Peak 12" Series Dual 4-Ohm Car Sub | Alpine
Alpine | R-SB12V 12" Alpine Halo Subwoofer with ProLink™
Alpine Type R 12 Inch Sub amp Pack with DIY harness | Universalfuze
LAB SlapBox™ 2.25 ft^3 Ported MDF Enclosure Box for Single Alpine 12" Type-R Subwoofer
Alpine Type R 12" Subwoofer In An Alpine Ported Box | Property Room
Alpine SWR-1222D Type-R 12" subwoofer with dual 2-ohm voice coils at Crutchfield
FS: Alpine Type R 12" sub + JBL BP300.2 mono amp - BMW 1 Series Coupe Forum / 1 Series Convertible Forum (1M / tii / 135i / 128i / Coupe / Cabrio / Hatchback) (BMW E82 E88 128i 130i 135i)
12" Alpine Type R Subwoofer and Enclosure | Tacoma World
Alpine Type R 12 Inch Car Subwoofers for sale | eBay