2014 - 2020 VW GTI / GOLF 5 Channel Amp and Sub Install | MK7 - YouTube
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
Helix hifi upgrade review - Modifying your Golf R MK7 - VWROC - VW R Owners Club
Alpine - SPC-600G7 Subwoofer System for VW Golf 7, Golf 6 and others
Volkswagen Golf MK7 fibreglass sub box suits TSI R GTI 10inch subwoofer | eBay