Saturn SC2 audio

hey everyone

I have a 1999 saturn sc2. I think that the rear left speaker is either blown or loose. When I turn the standard bass up, it makes an awful buzzing. Whats wrong with it and how do i fix it? Also, I want to make it sound awesome, with the deep, loud bass. Any suggestions for boxes or speakers? I admit that I dont know much about car audio, so any helpful hints would be greatly appreciated.

Thanks

Rachael

I would open up the rear deck and check it out. It's always possible that it came loose, but that's highly unlikely with stock speakers. Most likely it's blown