![Helix PP50DSP Plug and Play digital signal processor with built-in 5-channel amplifier at Crutchfield Helix PP50DSP Plug and Play digital signal processor with built-in 5-channel amplifier at Crutchfield](https://images.crutchfieldonline.com/ImageHandler/trim/750/457/products/2012/18/975/g975PP50DSP-F.jpeg)
Helix PP50DSP Plug and Play digital signal processor with built-in 5-channel amplifier at Crutchfield
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
![Tutorial: How-To Fit Helix Soundbox + Spare in GTI | GOLFMK7 - VW GTI MKVII Forum / VW Golf R Forum / VW Golf MKVII Forum Tutorial: How-To Fit Helix Soundbox + Spare in GTI | GOLFMK7 - VW GTI MKVII Forum / VW Golf R Forum / VW Golf MKVII Forum](https://www.golfmk7.com/forums/proxy.php?image=http%3A%2F%2Fi.imgur.com%2FJkjgvJNl.jpg&hash=51139fa020b24f75e0d5a08700451e8d)