Post by
Punjab »
https://forums.nicoclub.com/punjab-u105233.html
Tue Jan 13, 2009 5:23 am
I experience this as well especially with talk radio i think i have tracked it to the door lock and the handle vibrating with a specific frequency range more common in talk radio.. especially AM bands....
I am planning to mess with them in the summer and insulate around speaker and isolate door panel from door..
I also though that they were blown but i believe that not to be the case, design issue with something resonating seems that most dont experience also the tag on the seat belts will vibrate to the door pillar and make noise.
hope this helps, well at least this proves that i am not crazy and someone else hears this .