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Alpine SWR-T12 | Performance Car Audio Visual
Alpine R-Series 12" Dual 4-Ohm Subwoofer - R2W12D4 | Abt
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Best Buy: Alpine Type-R 12" 1000W Subwoofer Black SWR-12D4
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Alpine R-W12D4 Car Audio Type R Series Sub Dual 4 Ohm 2250W Peak 12" Subwoofer | ALP19-R-W12D4
Alpine R-Series 12" Dual 2-Ohm Subwoofer - R2W12D2 | Abt
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Alpine SWR-1242D Type-R 12" subwoofer with dual 4-ohm voice coils at Crutchfield
Alpine SWR-1242D Type-R 12" subwoofer with dual 4-ohm voice coils at Crutchfield
Alpine - SWR-1542D 15" (38cm) Subwoofer (4Ohm+4Ohm)
Alpine Type R 12" sub in ported box install - YouTube
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Amazon.com: Alpine R-W12D2 Dual 2 Ohm 1500W Peak 12" Subwoofer : Electronics
Insane Bass From Two 12" Alpine Type R (SWR12D4) Subwoofers!! - YouTube
