Supermil 4000




      
  
  

    

    

            

                            

        




The SILENTA Supermil 4000 offers very good attenuation over the full frequency range and the extremely low-set upper profile enables it to be used in combination with military ballistic or industrial helmets as well as other protectors such as welding shields, face shields and safety helmets.


 


FEATURES


    

  • Durable and compact construction
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  • Unique design – Fits under most industrial safety helmets
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  • Foldable – Easy to transport and store
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  • Colors: Black, Blue, Green and Red
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  • Nato Stock Number 4240-58-000-0716
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SNR 26 dB


NRR 20 dB


 






ATTENUATION VALUES
 H = 31 db
 M = 23 db
 L = 16 db
 SNR = 26 db






Frequency (Hz)




125




250




500


1000
2000
3150


4000




6300




8000






Mean attenuation (dB)
13.4
15.3
27.2
27.4
34.4
40.4
37.3
38.4
38.0




Std. Deviation
2.8
2.3
3.1
3.1
2.8
2.3
3.1
2.8
2.1




APV-value (84%)
10.6
13.0
24.1
24.3
31.6
38.1
34.2
35.6
35.9






 



 
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