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
A guide to upgrading the sound system on A3 8v (so that it's Hi-Fi and better than the B&O system) | Audi-Sport.net
Audi A3 8V Car-Hifi-Ausbau inkl. Subwoofer und Endstufe in Bayern - Hutthurm | Auto Hifi & Navigation Anzeigen | eBay Kleinanzeigen
![For Audi A3 8v 10 Channel Upgrade 12 Channels Front Midrange Speaker Wire + Rear Subwoofer Wire Cable - Fuses - AliExpress For Audi A3 8v 10 Channel Upgrade 12 Channels Front Midrange Speaker Wire + Rear Subwoofer Wire Cable - Fuses - AliExpress](https://ae01.alicdn.com/kf/H6911cee95a5d4a2c8f915fb9062971ea8.jpg)