Hello,
I've got an AVIC-NEX 8100 installed in a 2008 Porsche Cayman S. I'm experiencing some alternator whine (I think) - sounds like a high-pitched frequency that matches my revs. The conditions that I hear it in are as follows:
With any volume on (low volume, high volume), the whine isn't there.
As soon as I mute the system with the car on, there is a period of about 5 seconds where the system is dead silent (no noise from speakers and no whine)
Then, about 5 seconds after muting, I hear a white noise sound come on and the whine is audible.
Any ideas on why I would hear
