STP Crystal, Designed for use in the doors behind speakers.

Crystal is a multilayer combined construct consisting of a facing layer, a sound absorbing layer (foil) and a polymer mounting later based on caoutchous mix and covered with an anti adhesive coating. It is supplied in the forum of 2 hexagon panels. Together with noise and vibration reduction the detail is used for acoustic systems, sound pressure neutralizing in order to eliminate reflected waves and to achieve clear true and perfect sounding without distortion. The detail is installed inside an acoustic system begin a dynamic speaker.