Audi A3 8L - Subwoofer boards with double bass system - Jehnert Sound Design Automotive
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
FBaudi02 Audi A3 8P Fit-Box subwoofer enclosure
2006 - 2012 AUDI A3 Bose Speaker set w Subwoofer 8P4035382A OEM | eBay