I own a Fiesta Zetec Climate 2007 with the factory fitted Ford 6000 Stereo and factory fitted speakers.
When the car is switched off I can hear crackling from the speakers and after a short period parked the speakers will start intermittently banging, the stereo is not switched on. I have tried replacing the fuse for the audio on the circuit board in the glove box but this did not resolve the problem. I don't have any experience with troubleshooting issues with car audio so i'm not really sure what could be causing this to happen.
Any help would be appreciated