EN
25
ATTENUATION VALUES
Frequency (Hz)
125
250
500
1000
2000
4000
8000
Measured mean
attenuation (dB)
15,9
19,2
28,1
37,7
37,5
40,1
37,5
Standard deviation
(dB)
1,9
2
2,3
2,4
2
2,9
2,8
Assumed protection
value
14
17,2
25,8
35,3
35,5
37,2
34,6
SNR = 31 dB, H = 36 dB, M = 28 dB, L = 20 dB.
USE
1. Make sure that there is no hair under the
sealing rings. Remove earrings that prevent
the sealing rings from sealing tightly.
2. Place the headband over your head and
adjust the cups so that they cover your ears.
3. Move the cups up or down in the headband
to adjust them, so that they fit firmly and
comfortably and seal round the ears.
4. Check the fit by talking loudly. Your voice
should sound muffled. Ambient noise should
sound weaker than without the ear defenders.
Summary of Contents for 002959
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