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
2006 - 2012 AUDI A3 Bose Speaker set w Subwoofer 8P4035382A OEM | eBay
For Audi A3 8PA Subwoofer Housing 20 CM 8 Inch Woofer Space-Saving Boot 4047442079405 | eBay
OEM Audi A3/s3 8v Sedan Loudspeaker Subwoofer 8V0035412B for sale online | eBay
BOSE MID-RANGE DOOR SPEAKER / WOOFER - AUDI A3 A4 RS4 S4 - 8E0035411A
Aaros & Amp Bundle
A3 B&O sub woofer | Audi-Sport.net
Alpine - SPC-300A3 Premium Alpine Sound System for Audi A3, S3, RS3
2016 AUDI A3 (8V) SEDAN - RADIO STEREO SUB SUBWOOFER TWEETER SPEAKER SET-10 | eBay