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Wicked C.A.S. > Audi > Audi - 2002-08 A4 SEDAN 1x10" Enclosure SUB BOX SUBWOOFER ENCLOSURE
For Audi A3 8P 3-türer Subwoofer Housing for 20 CM 8 Inch Woofer Space-Saving 4047442079399 | eBay
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24 Layer Ported Speaker Box BASS TEST! Audi A3 - 2 CT-Sounds 8" Meso Subwoofers - Video 3 - YouTube
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M.A.P Audio & Customs - Custom made fiberglass 8" subwoofer enclosure for an audi a3 8v. This was hand made with mdf rings and support braces. It was then fiberglass and covered