The metal speakers, They are aimed to eliminate noise pollution, from in most cases linear infrastructure such as roads and railways.

The functional mechanism of these types of speakers is based on interposing a metal barrier type "sandwich" between sender and receiver. This barrier is composed of the following elements:

  • Un panel metálico multiperforado, It used as part of the noise absorbent.
  • Rock wool 70, 80 And 110mm thick, which is used to reduce the level of sound waves.
  • Housing of sheet steel, to which in turn an acoustic vain is created.
  • The features of this design are made according to the assessment of the current regulations:

– UNE-EN 1793-1
– UNE-EN 1793-2
– UNE-EN 1794-1