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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
2003 - 2013 Audi A3 Amp and Sub Install - YouTube
Audi A3 FWD Underfloor Sub Box (2006-2013)
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Alpine - SPC-300A3 Premium Alpine Sound System for Audi A3, S3, RS3