Quote:
Originally Posted by Gene's Z
I recently had a Pioneer X850BT installed in my 2012 370Z Roadster. As soon as I start the engine I hear an annoying hiss from the factory Bose speakers without turning on any audio source. I took it back to the installer who told me there was nothing he could do. He told me there is no preamp which is usually the cause. Any suggestions? Gene
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Sounds like the RCA's are not installed properly or the factory amp is not grounded. There is plenty they could do.