Helix Plug & Play Sound System/Subwoofer 000051419B Original VW | eBay
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
Alpine SPC-600G7 sub amplificato per Golf VII e Golf VI | Subwoofer -