Recently I installed some new pioneer 6x8s in all four doors in my ranger 2000 extend cab.

Hoping to get rid of the problem I've been having with bass from the speakers causing the two back door panels to rattle when playing music I installed my new second skin products on all my doors today.
I went over both the outer metal and inner metal surfaces of the door using damplifer pro covering every bit of exposed metal. Then in all the doors i used overkill pro and speaker tweaker kits. Even put a little bit of left over damplifer pro on the plastic panels around the speaker area too and bought all brand new clips to reattach the panels to the door carefully making sure they all went in. Also made speakers were tightly in place.

Anyways I fire up my system again only to find my door panels in the extended cab still rattle with bass tones from the speakers. Argg its extremely frustrating to find out the sound material didn't resolve it . I guess it was the plastic panels rattling the whole time. Does anyone have any ideas how I can resolve the rattling plastic panels ?

 

Might not be your rear doors that are rattling too. My rear doors don't rattle...but what does, is the back panel under the window, and the quarter plastics. Might look there as well.