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(2) Alpine R2-W8D4 8” 350W RMS Car Subwoofers+Ported Sub Box Enclosure R2W8D4
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SBR-S8-4 - Alpine 8" Single Ported Enclosure Loaded with Type-R Subwoofer
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Customer Reviews: Alpine SBR-S8-4 Ported enclosure with one 8" Type-R subwoofer at Crutchfield
Alpine | R2-DB8V-TRK | Dual 8" R-Series Truck Subwoofer Enclosure
LAB SlapBox™ 1.40 ft^3 Ported MDF Enclosure Box for Dual Alpine 8" R-Series Subwoofers
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Amazon.com: Alpine S-DB8V-TRK Dual 8 Halo S-Series Preloaded Truck Subwoofer Enclosure : Electronics
Alpine 8" Type R Single Enclosure | P.C. Richard & Son
