Looking for a Sub enclosure | Volkswagen Jetta Junkies
For those of you who want more bass but don't want to sacrifice your spare tire or hatch space, I highly recommend this spare tire mount subwoofer : r/GolfGTI
Oem Rear Woofer Sackbut Back Door Subwoofer Speaker For Vw Golf 6 Mk6 Jetta 5kd 035 454 - Speakers - AliExpress