Technical information
17
Sound Attenuation
Frequency
(Hz)
Sound
attenuation (dB)
Standard
deviation (dB)
APV
(dB)
63
29,9
4,9
25,0
125
34,0
6,2
27,8
250
33,0
4,6
28,4
500
33,7
4,8
28,9
1000
37,1
3,5
33,6
2000
40,1
2,2
37,9
4000
42,6
4,4
38,2
8000
43,1
4,9
38,2
SNR = 36 dB H = 37 dB M = 33 dB L = 30 dB
APV - Assumed Protection Value
SNR - Single Number Rating attenuation
H - High-frequency attenuation
M - Medium-frequency attenuation
L - Low-frequency attenuation
Hearing protection according EN 352-2:2002 and
EN 352-7:2002 with maximum output sound level of
85 dB.
Wireless audio receive function for entertainment
purposes according to EN 352-8 with maximum output
sound level of 82 dB (A).
(measured with a maximum magnetic field strength
of 720nT)
Technical information
