VW Retrofit LTD - Golf MK7 TDI upgraded with Helix subwoofer kit. 2h ish job including fitting and programming sound parameters. Quite good results from such a small box 😊 | Facebook
Custom Fit Subwoofer Box Empty Housing for VW Golf 5/6, 10"/25cm : Amazon.de: Electronics & Photo
Replaced dynaudio sub driver - Modifying your Golf R MK7 - VWROC - VW R Owners Club