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Alpine Jeep Wrangler Single 12-Inch Alpine Halo R-Series Preloaded Subwoofer Enclosure with ProLink R2-SB12V (Universal; Some Adaptation May Be Required) - Free Shipping
KENWOOD P-W3021D Performance Series Dual 12-Inch 2,000-Watt-Max Preloaded Subwoofers with Vented Enclosure - Walmart.com
BPKG110v2 | 500W Peak Single 10" Loaded Ported Subwoofer Package with – Belva
1800W Preloaded 12" Subwoofer Enclosure With Amplifier Easy install Active | eBay