Alpine - SPC-300A3 Premium Alpine Sound System for Audi A3, S3, RS3
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
Basser - FBaudi03 Audi A3 8P Sportback Fit-Box subwoofer enclosure
FBaudi01 Audi A3 8L Fit-Box subwoofer enclosure
For Audi A3 8L Subwoofer Housing for 20 CM 8 Inch Woofer Space-Saving Boot | eBay
Audi A3 E-tron Woofer - Audi 8V0-035-415-D – Ingenext
For Audi A3 8P 3-türer Subwoofer Housing for 20 CM 8 Inch Woofer Space-Saving | eBay
2003 - 2013 Audi A3 Amp and Sub Install - YouTube
Custom Fit Subwoofer Enclosure for AUDI A3 8p Sportback for sale online | eBay
Audi A3 2003 Onwards JL Audio 8" 150 Watts Car Subwoofer Custom Bass Box Kit
FBaudi01 Audi A3 8L Fit-Box subwoofer enclosure
2016 AUDI A3 (8V) SEDAN - RADIO STEREO SUB SUBWOOFER TWEETER SPEAKER SET-10 | eBay
Wicked C.A.S. > Audi > AUDI A3 Magic Box 10 / 12 / 13 SUB BOX SUBWOOFER ENCLOSURE
Audi A3 Bose Speaker Set W Subwoofer 8p4035382a OE Fits AUDI 2006 2006-2012 | eBay