Alpine Type-R SWR-12D4 3000W Peak (1000W RMS) 12" Type-R Series Dual 4-Ohm Car Subwoofer
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ALPINE Type R 10 Inch 2250 Watt Max 2 Ohm Round Car Audio Subwoofer | – Audio Design
ALPINE SWT-12S4 1000 Watt 12" Car Audio Bass Tube Subwoofer+Amplifier+Amp Kit - Rockville Audio
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Alpine - SWR-12D2 12′′ Type-R Subwoofers (2Ω + 2Ω)
Alpine SWX-1243D Type-X 12" subwoofer with dual 4-ohm voice coils at Crutchfield
Alpine SWR-8D2 8" 1000w Subwoofer+Sealed Box+Mono Sub Amplifier+Amp Kit SWR8D2 - Rockville Audio
Alpine R2-W8D2 8-inch R-Series Subwoofer with Dual 2-Ohm Voice Coils
Alpine SWR-8D4 8" Inch 1000 Watt Dual 4 Ohm Type-R Car Subwoofer Sub SWR8D4 | Audio Savings
Best Buy: Alpine 12" 1000W Passive Subwoofer Black SWR-12D2
Best Buy: Alpine Type-R 12" 1000W Subwoofer Black SWR-12D4
Alpine SW12D4 12" Subwoofer Dual 4 Ohm Coils 600 Watts RMS/1,800 Watts Peak | BrandsMart USA
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2) Alpine Type-R R2-W12D2 12" 750w Subwoofers+Vented Box+Mono Amplifier+Amp Kit - Rockville Audio
Alpine R2-W12D4 12" R-Series "R2" Subwoofer, Dual 4-Ohm, 750 Watt RMS - Creative Audio
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