Speaker Ground/Alternator Noise

[amatofilms]

I'm hearing what sounds like a bad ground alternator noise coming from my speakers. The truck is stock with no modifications. This is 100% not the pedestrian warning system or turbos spinning. It changes with speed electric or gas mode. It started soft but now is audible even with music on. 22 Powerboost Platinum B&O.

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[Paul Neubauer]

My truck had that same whine and then it suddenly went away after I updated everything with FDRS and fully charged the battery.

 

[amatofilms]

I'm going to make an appointment with service today. It's only getting louder and driving me nuts.

 

[Oakstone]

I think I have the same thing. Can hear it like electrical whine at certain RPM and fairly obviously via the tweeter in the front pillar. In a previous car that I had done the stereo install for, a small capacitor got rid of it for tweeters, but I needed a line noise /ground loop isolator on my larger speakers.

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