Basser - FBaudi02 Audi A3 8P Fit-Box subwoofer enclosure
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
For Audi A3 8PA Subwoofer Housing 20 CM 8 Inch Woofer Space-Saving Boot 4047442079405 | eBay
Audi A3 - Custom Stealth Sub Install (Pictures Included) - AudiForums.com
2013 AUDI A3 (8P) HATCHBACK - STEREO MID HIGH TWEETER SUBWOOFER SPEAKER SET-10 | eBay
Subwoofer Audi A3 Sportback 2.0 TDI 16V Quattro - 8V0035382C BANG OLUFSEN
For Audi A3 8L Subwoofer Housing for 20 CM 8 Inch Woofer Space-Saving Boot 4047442079382 | eBay
Trunk Subwoofer Speaker Box Sub 06-08 Audi A3 - 8P4 035 382 B | CarParts4Sale, Inc.
Subwoofer Audi A3 Sportback 1.4 16V e-tron - 8V4035382
dizzythedog.com
Audi A3 2003 Onwards JL Audio 8" 150 Watts Car Subwoofer Custom Bass Box Kit