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With an ultra-shallow enclosure design and powerful sound output, the R-Series Shallow Preloaded Subwoofer Enclosures give you the best of both worlds in size and sound! Big bass in a slim design — the Alpine RS-SB12 delivers powerful, deep lows from a compact R-Series shallow enclosure built to hit hard and fit anywhere.

TESTED AND APPROVED BY TRAIL SEVEN: Our Alpine R-Series Shallow Preloaded Subwoofer Enclosure has been installed and tested on our Trail Seven Jeep and we're pleased to put our stamp of approval on this powered subwoofer!