The combination of an Alubutyl insulation mat as base layer and a top layer of acoustic foam reduces effectively unwanted vibrations of the outer door panel or the door trim; it also eli-minates sound reflections in the door for an unmistakably more stunning bass reproduction.
The aluminum layer grants additional stability, the butyl reduces the natural resonance of the part to be insulated clearly, e.g. of the aforementioned door trim. Emphaser ESP-DM1 is available as a one-step solution, but of course you can also use it as final layer combined with ESP-DM4.
2000 x 460 x 4.5 mm/1 piece