I have the stock Bose audio system and it hits pretty hard for stock. So hard in fact that the front speakers have loosened the front plastic thingies that house the window lock/door lock/window switches on the driver side and the window switch on the passenger side. They can now slide back and forth and rattle when the bass hits. When i hold them down the rattle goes away. That's how i know for sure the speakers arent blown. Anyone know how i can fix this?? Thanks in advance...

 

I have not had this problem with the bass in the car, but my problem came from taking them off improperly when trying to get access to the door panel. When I broke one of the tabs, my best fix was to heat up some plastic with a soldering gun to make a new tab. No doubt your problem could be fixed by taking off the door panel and checking things out to see why there is slippage. Easy fix.