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Amazon.com: Alpine ALP19-R-W12D4 Car Audio Type R Series Sub Dual 4 Ohm 1500W Peak 12" Subwoofer : Electronics
Alpine
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Alpine SWR-1242D (SWR1242D) 12" Dual 4 ohm Type-R Car Subwoofer
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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)
Alpine SWR-1242D Type-R 12" subwoofer with dual 4-ohm voice coils at Crutchfield
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![Custom Ported Subwoofer Box Enclosure for 2 12" Alpine Type R Subs - R-Series | eBay](https://i.ebayimg.com/images/g/NVQAAOSw1nVd3fcb/s-l1200.jpg "Custom Ported Subwoofer Box Enclosure for 2 12" Alpine Type R Subs - R-Series | eBay")