My car has just started to make a funny light rattling noise at certain sound levels / bass levels.
I have upgraded the the door speakers and have a sub and amp. if i have bass set to any more then +1 then there is a funny vibrating noise coming from around the headunit area. If i press on the head unit while it's vibrating it nearly stops so it could be the heater vents.
How do i tighten up the HU?
Has anyone else had this problem?