Speaker Problems

[Leigh72watford]

HELP!! Currently have a GTI 180 but having very annoying problem with the tweeter speakers. When playing a CD in the multi changer, you getting a crackle noise coming from them. This doesn't happen when playing a CD in the head unit or the radio. Have taken it back to dealer and they have changed both the multi changer and tweeter speakers but still no joy.
Does anyone have any ideas? I know its a trivial problem but it is really annoying

[Bad-Co]

I would say, from your description that its the data cable from the MC to the HU that needs changing or relocating..
It's quiet possible running near an electrical supply, that it interferring with the signal.

Simple test but not 100% reliable is get the crackling sound going, then turn the headlights on/off and see if it changes the sound.

[Blackpug]

Sounds like bad connection / cable fault.