MSA left/RIGHT Operating Manual page 5

Headband version
f (Hz) 63
Mf (dB) 13.9
Sf (dB) 5.1
APV (dB) 8.8
H = 31 dB, M = 25 dB, L = 17 dB, SNR = 28 dB, NRR = 25 dB
Helmet mounted version
f (Hz) 63
Mf (dB) 12.7
Sf (dB) 3.5
APV (dB) 9.2
H = 29 dB, M = 23 dB, L = 16 dB, SNR = 26 dB, NRR = 24 dB
2.2 North America
The product meets with requirements of FCC 47 CFR PART 15
Certificate issue by Emitech, 3, rue des Coudriers - CAP 78 - ZA de l'Observatoire - 78180 MONTIGNY LE
BX - France
Attenuation Data
ANSI S3.19-1974
Attenuation measurements have been performed according to the American National Standards Institute
(ANSI) specifications, ANSI S3.19-1974. Certificate issue by Michael & Associates
NRR (Noise Reduction Rating) = Headband: 25dB, Helmet mounted: 24dB
3 Materials
Part
Cup
Cover
Headband
Headband fork
Helmet fork,
Helmet attachment
Spring bracket
125 250 500
13.7 18.1 27.1
3.2 2.0 3.3
10.5 16.2 23.8
125 250 500
13.7 16.2 24.3
4.0 2.9 3.1
9.7 13.4 21.2
left/RIGHT Wireless World
X
Materials
ABS
ABS
Acetal
Polyamide
Polyamide
Polyamide
left/RIGHT
1000 2000 3150
34.0 32.1 38.4
4.1 4.2 4.8
29.9 27.9 33.6
1000 2000 3150
31.2 32.2 33.0
4.5 5.2 2.9
26.7 27.0 30.1
left/RIGHT Wireless World Dual
Part
Microphone arm
Height adjustment bushings
Spring cover
Bluetooth button
Attenuation foam (inserts)
Cushions
Materials
4000 6300 8000
40.1 41.8 38.1
4.4 3.5 3.5
35.7 38.3 34.6
4000 6300 8000
36.4 35.5 31.6
3.0 2.9 4.4
33.4 32.6 27.2
X
Materials
Polyamide
TPE
TPE
TPE
Polyurethane
Polyurethane, PVC
GB
5