Ford au door speaker

Question

one of the door speakers on my au ford falcon rattles

its not the speaker its the plastic cover rattling any idea how to stop this

Answer 1

Could it be that the speaker on this door is not fitted properly due to which at higher volumes you hear rattling (due to the vibration of the speaker membranes)?

Or could it be that you have overdriven your speakers to clipping level due to which it might have gone bad?