Upgrading Speakers for Non-Bose B6/B7 Audi A4 – Nick's Car Blog
Stereo Integrity - Our b7 Audi Avant with our IB-24 subwoofer in the spare tire well. Will be completely stealth when finished. Can't wait! ______ Follow our IG, FB and Twitter and
Wicked C.A.S. > Audi > Audi - 2002-08 A4 SEDAN 1x10" Enclosure SUB BOX SUBWOOFER ENCLOSURE
MDF closed subwoofer enclosure for Audi A4 B6 B7 | eBay
Audi A4 B7 Bose Soundsystem Speaker Subwoofer Control Unit 8E9035382E | eBay