Hey guys, so I installed a subwoofer into my truck a while back, along with nice speakers and 2 amps. The system sounds great, apart from a ton of vibration in my door panels. I have a 97' F150 extended cab. So I really don't have that many panels. How can I reduce or stop the vibration? Its to the point where its so distracting it takes away from the music. I've discovered that the noise is made when the panels vibrate against each other, so if I put my hand over the spot in which the vibration is coming from, it stops. Does anyone have any ideas on how I can dampen the sound?
INB4 Glueing the panels
+k for good ideas/decent responses.