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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
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Alpine Dual 10” Type-R Thin Sealed Bass Package Includes two Alpine SWR-T10 10” thin subwoofers, and sealed enclosures
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