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
Audi a3 8L subwoofer Audio System HX08SQ zabudowa basstest - YouTube
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BASSER Audi A3 - 8" Fit-Box Subwoofer Enclosure 8L
dizzythedog.com
Caisson de basse Audi A3 8P - Équipement auto
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Wicked C.A.S. > Audi > AUDI A3 Magic Box 10 / 12 / 13 SUB BOX SUBWOOFER ENCLOSURE
Maxxcount Custom Fit Subwoofer Box Empty Housing for Audi A3 8L : Amazon.de: Electronics & Photo