In my gtp I have the monsoon system. It makes this loud squealing sound when u turn the volume up. If I turn the volume up loud enough the squealing will continue even once I turn the radio down, or even turn the car off! I mean key out, standing outside the car with the doors closed it still does it, and is extremely loud. The only way to get it to stop is to get back in, and start the car. It makes a "thump" sound (almost like the sound of the amp kicking on and your 12lvs go thump) I do NOT have any other speakers in the car other than the stock equip, and the radio is also stock. Does anyone know what I can do about this? Its pissin me off!
