Weird speaker vibration
Okay, I have an issue with my driver side speaker, on the dash. Sometimes when the road gets bumpy, I get a weird vibration/buzzing sound from the speaker. It's electronic, and turning the volume down does nothing. The only way to get it to stop, is to give the dash a good pound with my fist. Sometimes it takes a few good hits though (I never hit the speaker, only the dash in front of it). But even when I do that, it often comes back after a few seconds.
It only ever happens when I hit a bump in the road, never on a smooth road.
What do you guys think? Thanks in advance.