Audi A4 B7 Bose Soundsystem Speaker Subwoofer Control Unit 8E9035382E | eBay
How to Remove Subwoofer and Amp (Avant) - Audi A4 S4 RS4 - B6 B7 - 2001-2008 - TOTAL TECHNIK - YouTube
For Audi A4 B6 B7 8E Saloon Subwoofer Housing for 25 CM Woofer Space-Saving | eBay
AUDI A4 B7 AVANT BOSE SPEAKER BOOT SUBWOOFER & AMPLIFIER 8E9035382D 8E9035223D | eBay
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
Audi A4 2001 Subwoofer install. 15 inch ported box and Shockwave subwoofer. - YouTube