Originally Posted by mckenziepiping
I'm having the exact same program with my 97 Jeep Grand Cherokee with aftermarket Pioneer speakers. I have an idea that's different from everything people have been suggesting so far and I'd like some feedback before proceeding.
What do you think of buying a bag of fibreglass insulation (the pink fluffy stuff), taking off the door panel and just stuffing it behind the speaker so that the bass vibrations are absorbed rather than being transmitted into the window mechanism?
Or would this be a fire hazard?
Sorry I didn't see this post earlier and I'm not sure what you did already.
Anyway, I would NOT use fiberglass insulation. Fiberglass + skin = bad things. If anything, the fiberglass insulation would mostly deaden sound from the outside (although I would guess not much at all). I just finished dynamatt'ing/raammat'ing/other sound deadening my jeep liberty. It is a lot quieter on the inside and I put foam in a bunch of spots where I thought pieces in the door could rattle. Long story short, a lot of the rattling is gone, but certain notes bring small rattles out. What you want to look for is places a piece of plastic (such as a wire harness) can rattle into another piece of plastic or metal. I'm almost sure that my remaining door rattles are due to the edge of the plastic door panels banging against the metal door frame. Maybe I'll try using that spray rubber flex seal stuff around the edge? Not really sure how to approach it.
If you are set on filling the door with some type of insulation/foam, try polyfil. You can find it at walmart or any other big store for cheap (like $8-9 for a big bag). It's mostly used to stuff subwoofer boxes, but I'm guessing in the doors, it might have the effect of deadening a tiny bit of the outside noise. This isn't a bad idea. Grab a handful of the stuff and wrap it around everything that could move like the door lock lever. Let me know how it goes and good luck!