I have a 2000 Daewoo Nubira SE and my front drivers side speaker rattles like no other when the volume is barely even up. I havent put much investigation into where its coming from because i dont have the time. i just faded my sound toward the back so it lowers the volume in the front. Does anyone have any ideas as to what this horrible incessent rattling could be?

 

blown speaker, lose speaker, lose material in the door. just a few guesses it could be.