LAB SlapBox™ 2.25 ft^3 Ported MDF Enclosure Box for Single Alpine 12" Type-R Subwoofer
Alpine SWR-1242D (SWR1242D) 12" Dual 4 ohm Type-R Car Subwoofer
Alpine R2-SB12V-BNDL 12" TYPE-R HALO Loaded Enclosure with S-A60M 600 Watt Mono Amplifier and RUX-KNOB.2 Bass Knob - Creative Audio
Customer Reviews: Alpine SWR-12D4 Type-R 12" subwoofer with dual 4-ohm voice coils at Crutchfield
Amazon.com: Universal Car Stereo Vented Port Single 12" Alpine R-W12D4 Type R Car Audio Subwoofer Custom Sub Box Enclosure Package New : Electronics
Alpine R2-W12D2 12” R-Series 750W RMS Subwoofer Dual 2 Ohm Car Audio Sub R2W12D2 793276084668 | eBay
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)
Best Alpine Type R 12" Subwoofer for sale in Canton, Georgia for 2022
Alpine 12” Type R-Series Powered Ported Bass Package Includes one Alpine R-W12D4 12” subwoofer, R-A75M amplifier, and 2.25 ft³ optimized ported enclosure
Alpine SWR-T12 Type-R Thin 12" 4-ohm shallow-mount subwoofer at Crutchfield