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Helmet mounted
Clamping force 2.9 lb
ANSI s3. 19-1974
Frequency,
125
Hz
Mean
attenuation,
19.4
dB
Standard
3.4
deviation, dB
Headband style
Clamping force 11 N
ANSI s3. 19-1974
Frequency,
125
Hz
Mean
attenuation,
19.4
dB
Standard
2.9
deviation, dB
14
250
500
1000
25.3
28.4
33.1
3.1
3.3
3.3
250
500
1000
24.8
33.1
38.8
2.6
3.8
2.8
2000
3150
4000
34.8
39.1
37.4
2.9
2.9
3.8
2000
3150
4000
37.9
40.8
39.5
3.2
4
3.8
6300
8000
NRR
40.4
36.6
24
4.7
4,4
6300
8000
NRR
41.5
38.8
27
3.6
5.2
2146 - 003 -
CSA
class
Class A
CSA
class
Class A
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