I installed Dynamat in the passenger front door of my van.  Haven't
gotten to the driver's side yet.  The difference in the sound the door
makes when closing is amazing!  It now makes that firm, confident
sound that you get when you close the door of a finely made German
automobile, like a Mercedes or a BMW.  The sound inside improved
noticeably on the passenger side.  I am kicking myself for not doing
the front of the van when I had the dash out years ago.  There's a lot
of noise there, particularly when raining.  At this point, I would
recommend putting it in both front doors, on the metal behind the
dash, and probably on the ceiling, though that would be a lower
priority since you already have the luggage rack muffling much of the
exterior noise.  The back speakers seem to be loud enough for the rear
passengers, but that sound doesn't really make it up front so well.

I also installed a 6" Bazooka sub right behind the front passenger
seat.  That made a huge difference in the quality of the sound coming
from my stereo, and took a lot of the pressure off of the front
speakers.  Those 3" Blauplunkts weren't intended to be able to hit
those low notes, though I find them pretty efficient speakers overall.

My subjective observations...
Marc

On Mon, Mar 15, 2010 at 11:57 PM, Phil Baird <mypactor@pacbell.net> wrote:
> Has anyone installed Dynamat in their Vanagons?
>
>
>
> Were you happy with the results?
>
>
>
> Thanks.Phil in Bakersfield
>