Had an S10 ext cab with 4 12" l7's and this stuff worked wonders.

As good at Dynamat in my opinion and I've used both. Cheaper Price.

I bought this to install on the rear cargo door of my Hummer H2. This is a great product and at a Great price. It basically eliminated any door rattles. I would recommend this product.

Installed 3 of these kits in my car. The highway ride is noticeably quieter, the car doors now shut with a resounding thud instead of sounding like a hollow aluminum can. Much less rattling from subwoofers. Good stuff.

Did all 4 doors trunk "door" and license plate on my mk4 jetta with some left over to play with killed the rattle i was getting in my doors as well as trunk...idk bout increased output from my speakers but with the rattle gone im more than happy.

Makes an immediate difference in the resonance of the material it's applied to, even with a mininmal amount. Easy to apply. Not as picky about temp or surface. Awesome price.

This turned out to be a better product than expected. I dont see that much difference with Dynamat other than this one is cheaper to the wallet. I will buy this product again.

Used with with the 36 square foot kit to get my truck done, and it makes a big difference in sound, road noise and sound clarity, if your wanting more bass without having to upgrade your system you will want this.