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
Option Soundupgrade V3 compatible with VW Golf 7 VII (type AU) - 100% Plug & Play complete set with speaker front system, 5-channel DSP amplifier and 25 cm downfiring subwoofer : Amazon.de: Electronics & Photo