Sound deadening is a generic term used for an assortment products used to control noise and/or structural vibration
Damper ? by far the most common type of material. It uses mass loading to lower panel resonance and absorb structural vibrations, converting them into low level heat. Most commonly used throughout a vehicle to control structural related noises.

Absorber ? as the name suggests, these products literally absorb airborne sound waves. The sound waves have to propagate through the absorber and the open/closed cell foam will slow it?s progress reducing the overall level in the process.

Barrier ? as the name suggest, these products form a barrier or wall, which blocks airborne noise from passing through. The denser the barrier, the more effective it is.

Composite ? Best results are achieved by using more than one of sound deadening, so a composite is quite simply a combination of two of the above types into a single easy to install product.

Dynamat creates a "sonic barrier" that restores dynamic range lost to road noise. When you stop road noise and vibration, you clearly hear more of the sounds you want - like music, navigation systems, mobile video and cell phones.

Dynamat Xtreme? is a butyl and aluminum vibration damper.