I had been running 2 phoenix gold Octane R 5x7's and 2 PG 6x9's off a Pioneer DEH-P8500MP deck and all worked fine untill i needed to get my car repaired for broken windows (vandalism). Neway i got the car back and the 2 6x9's were shot... dealer replaced them with Alpine SPR-694A's
Now, however I'm getting a consistent buzzing sound from the tweater out of the new right rear speaker but it only occurs when the car is running. If the key is just turned so the speakers turn on then there's no problem. Now i'm at a loss for what could be causing this problem and I've taken it a couple places (futureshop included) and no one knows the cause. Possible ideas are the deck, or some kind of a grounding problem.
If anyone has any ideas on how to fix this please let me know. By the way i also have a PG amp and 2 12 inch subs but the speakers are run off the deck.