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Amazon.com: Compatible with Audi A3 2006-2013 Font Door Factory Replacement Speaker Harmony HA-R65 Speakers : Electronics
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
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Amplifier A3 AMP Induction Dynamics A3 Internal Class AB Subwoofer Amplifier | SoundTube Entertainment
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