I have been wondering why the audio in my car sounded so off compared to a friends stock JBL Spider system. Drivers door woofer is not working at all, passenger door mid speaker is not working either. The fader and balance do not work correctly either. Sending sound to the rear increases sound at the front, and left and right seem to be crossed over. Has anyone seen anything like this before? Unfortunately, this car is out of factory warranty and only on the power warranty now. Not sure where to start looking for issues. The only thing that the dealer has done was install an ipod cable for me, and remove the dash for sticky refinishing. Not sure if the amplifier wiring can be reversed if its a factory single position plug? Thank you!
