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acoustics - Vibrasto 10 and 20
 
 
                   
> glued on concrete                  
                   
frequencies (Hz) aw Class NRC 125 250 500 1000 2000 4000
Vibrasto 20 0.39 (H) D 0.45 0.07 0.20 0.32 0.48 0.65 0.67
Vibrasto 10 0.25 (H) E 0.25 0.04 0.09 0.16 0.26 0.37 0.49
                   

Test reports available
Standard NF EN 20354 / ISO 354
> glued on gypsum boards screwed onto a framework and 45 mm layer of mineral wool
                   
frequencies (Hz) aw Class NRC 125 250 500 1000 2000 4000
Vibrasto 20 0.50 (H) D 0.50 0.42 0.34 0.41 0.53 0.69 0.75
Vibrasto 10 0.35 (H) D 0.35 0.37 0.27 0.28 0.33 0.49 0.69
 
 
 

This commonly used substrate provides extra absorption in the low frequencies.

 
 

Vibrasto is also availale in 05, pencil line finish not possible. Please contact us.

  
 
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