Dynamat Xtream and Dynamat Superlite are a self-adhesive, ‘tar like’ substance with an aluminum foil backing.
Dynaliner and Dynapad are a ‘closed cell’ like material.
The company recommends to install the Dynamat first and then if you so wish, the Dynaliner or pad over that.
Their web site product information is more car orientated, nothing really on 4wd applications. So I E-mailed the parent company with a few questions regarding my application. They we’re quite helpful.
There are a heap of different products on the market, some are cheaper and some are more expensive.
Personal choice really.
I bought my materials on eBay through a couple of different vendors in the states.
Watch the shipping costs! Work out the total cost before choosing, even with the Aussie vendors. The shipping costs can almost be as expensive as the materials themselves with the overseas vendors.
As zwitter said the ‘tar like substance’ lowers the resonating noise transmitted through the metal. It doesn’t actually lower the sound level (for want for a better word). Hard to understand I know but you can get your head around it eventually. The ‘closed cell’ like material will lessen the sound or noise level inside the vehicle. Hence the recommendation to use the two products together.
Hope this helps some. I know I had a hell of a time working it all out when I did mine.
Cheers
