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
How to fit and install power and RCA cables in your Audi A3 8L - YouTube
Audi A3 - Custom Stealth Sub Install (Pictures Included) - AudiForums.com