So I was playing a song with a lot of bass... and i started to hear the passenger speaker rattling... sounds really bad... but then I changed the song to another bassy song... it was fine, then another... fine as well. I don't know what's wrong but it just seems like the speakers can't handle that much bass without rattling... it seemed like the other songs I played without the rattle had bass coming out of the other speakers (not passenger). I thought the stock speakers could handle pretty much loud volume with a lot of bass without busting... what's wrong?

 

I've cranked it as loud as my ears can handle and it sounds awesome. Maybe your speaker's busted... get it fixed under warranty?