Turn the volume til you get the buzz then put your ear in front of each speaker, one at a time. Opening the door of the speaker you are checking helps. It could be a poorly mounted speaker or a loose tweeter. Do easy things first. If not a speaker issue, replacing plug lead wires may help. Do you know how to arc-check a wire or measure resistance?

 

Been busy here lately and haven't had time to mess with it yet. I do not know how to arc-check or measure resistance. I'm sure you all read it, but as I said in my OP it doesn't sound fuzzy or anything when I'm sitting still until I turn it up HOLY CRAP loud. Then it gets fuzzy and stuff, but that's to be expected with stock speakers. It only sounds really bad and fuzzy when I'm driving. Would just replacing the speakers do it? I'm about to put 2 10" subs in it, so I want the speakers to work good before I put the subs in.