NRR AND SLC80
The SM1P/B has been certified to international hearing protection
standards including AS/NZS 1270:2002, ANSI S3.19-1974, ANSI
S12.6-2008, EN352-1, EN352-3, EN352-4, and EN352-6. The following
passive attenuation ratings were observed:
PASSIVE ATTENUATION (ANSI S3.19 -1974)
SM1P/B measured in accordance with ANSI S3.19 -1974.
Headband mount - SM1PBXXX &SM1BBXXX
Frequency (Hz)
125
250
500 1000 2000 3150 4000 6300 8000
NRR
Mean
attenuation
(dB)
22.1
24.4 31.1
35.1 35.8
37.0
39.9
40.7
40.7
27dB
Standard
deviation(dB)
3.1
2.4
2.0
2.5
3.2
3.0
3.3
2.7
2.9
Behind-the-Neck mount - SM1PEXXX &SM1BEXXX
Frequency (Hz)
125
250
500 1000 2000 3150 4000 6300 8000
NRR
Mean
attenuation
(dB)
18.9 22.4 28.6
33.6 33.5
35.3
37.3
38.8
37.4
24dB
Standard
deviation(dB)
3.5
3.4
2.6
2.8
2.3
3.5
4.0
2.9
3.4
Helmet mount - SM1PHXXX & SM1BHXXX
Frequency (Hz)
125
250
500 1000 2000 3150 4000 6300 8000
NRR
Mean
attenuation
(dB)
18.6 20.8 27.3
33.6 37.1
35.5
35.3
37.1
35.0
23dB
Standard
deviation(dB)
3.2
2.7
3.1
3.9
2.3
3.1
3.8
3.8
3.4
En
glis
h
DOC00084 SM1P/B Manual rev 14.00
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Summary of Contents for SM1B
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