Finally got around to doing some sound proofing to the front doors yesterday, not so much for road noise as they are pretty good but to see what difference it made to sound quality from the stereo.
Overall the process wasn't too fiddly, I used 2 sheets per door, 1 1/2 for the outer skin and the half a sheet on the inner. The outer skin is pretty much completely covered while the inner I just put strips in strategic locations to stop resonant vibrations from occurring.
With the outer skin it was a bit like playing Tetris, I found if you tried to use to big a piece, it made locating it tricky as it likes to stick to everything and fold on itself when fitting to corners, also the side intrusion bar is not level across the door. One I figured this out I just measured and cut to suit and the second door took half the time. I paid particular attention to making sure that its was contacting on all surfaces and I left no air pockets, apparently there is a roller for this but I just did it the handimatic way.
Results - You can definitely hear the difference when shutting the door, no longer has that hollow echoey sound, shuts with more of a thud. Sound wise there is a noticeable difference, the bass has definitely improved, but it has highlighted just how average the speakers are with their response, probably not an issue for most, but if you like high quality sounding music it may be.
Overall for $120 for 5 sheets of Mongoose Q mat(on special) and a couple of hours work I'm happy with the result.
I'll probably do the rears next time the matting goes on sale and if I'm brave I may even do the roof (just a bit apprehensive on pulling down the roof liner, but the wind noise from the Pioneer rack and light bar is very noticeable.
Jason
Oh yeah, next time I'll remember to take photos
