3M PELTOR ComTac VI - Page 4

A) ANSI S3.19-1974
Folding Headband with foam cushion
MT20H682FB-**N**
A:1 Frequency (Hz) (ƒ) 125 250 500 1000 2000 3150 4000 6300 8000 NRR
CSA
Class
A:2 Mean attenuation (dB) (M
f
) 13.6 17.7 28.8 31.9 32.3 39.3 39.9 42.1 41.4
23*
A:3 Standard deviation (dB) (s
f
) 2.6 2.5 2.7 1.9 1.5 4.1 2.3 2.6 2.5 B
Folding Headband with gel cushion
MT20H682FB-**N** with HY80A
A:1 Frequency (Hz) (ƒ) 125 250 500 1000 2000 3150 4000 6300 8000 NRR
CSA
Class
A:2 Mean attenuation (dB) (M
f
) 11.4 15.7 21.7 28.9 33.1 40.8 38.8 37.3 37.3
20*
A:3 Standard deviation (dB) (s
f
) 2.8 2.7 2.0 2.7 1.9 3.5 3.7 2.5 3.5 B
Backband with foam cushion
MT20H682BB-**N**
A:1 Frequency (Hz) (ƒ) 125 250 500 1000 2000 3150 4000 6300 8000 NRR
CSA
Class
A:2 Mean attenuation (dB) (M
f
) 15.5 17.9 26.0 31.3 32.4 38.9 41.3 44.7 46.2
22*
A:3 Standard deviation (dB) (s
f
) 4.0 2.5 2.3 2.7 3.2 3.2 3.0 3.8 4.4 B
Backband with gel cushion
MT20H682BB-**N** with HY80A
A:1 Frequency (Hz) (ƒ) 125 250 500 1000 2000 3150 4000 6300 8000 NRR
CSA
Class
A:2 Mean attenuation (dB) (M
f
) 15.2 17.6 24.9 30.5 33.4 39.3 41.4 46.2 45.8
21*
A:3 Standard deviation (dB) (s
f
) 4.2 2.7 2.3 3.8 4.1 3.0 3.4 3.0 4.7 B
Helmet attachment with foam cushion
MT20H682P3AD-**N**
A:1 Frequency (Hz) (ƒ) 125 250 500 1000 2000 3150 4000 6300 8000 NRR
CSA
Class
A:2 Mean attenuation (dB) (M
f
) 15.1 20.3 26.4 32.1 33.0 39.7 34.1 39.4 40.1
22*
A:3 Standard deviation (dB) (s
f
) 3.9 2.7 3.0 2.8 3.5 3.7 3.5 2.9 2.3 A
Helmet attachment with gel cushion
MT20H682P3AD-**N** with HY80A
A:1 Frequency (Hz) (ƒ) 125 250 500 1000 2000 3150 4000 6300 8000 NRR
CSA
Class
A:2 Mean attenuation (dB) (M
f
) 15.1 17.6 26.1 35.1 32.9 40.9 35.3 39.5 40.0
21*
A:3 Standard deviation (dB) (s
f
) 3.9 3.5 3.3 2.6 2.8 2.3 3.0 2.6 2.4 A
• Tested with 3M™ Ceradyne™ Ballistic Helmet
• Tested with OPSCOR Helmet
*3M strongly recommends individual t testing of hearing protectors. If the NRR is used to estimate typical workplace protection,
3M recommends that the noise reduction value be reduced by 50% or in accordance with applicable regulations.