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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
AUDI A3 8V 2013 - Install Subwoofer - YouTube
Audi A3 8v 100 plug and play front speaker upgrade
Lautsprecher Bassbox Subwoofer Bang & Olufsen für Audi A3 8V 12-16 8V0035382A 8V0035382A 43040742201
SUBWOOFER BOSE - Audi A3 8V (2012-2020) - Forum Audi