DOC00091 SP1R Manual rev 02
16
PASSIVE ATTENUATION (EN352-2 AND EN352-7)
SP1R measured in accordance with EN352-2 and EN352-7.
Foam tips (EN352-2)
Frequency (Hz)
125
250
500
1000 2000 4000 8000 H
M L
SNR
(dB)
Mean
38.8
35.4
40.7
39.8
40.9
40.8
44.3 37 36 35
38
attenuation (dB)
Standard
4.8
3.2
3.5
4.7
3.5
3.7
3.7
deviation (dB)
Mean attenuation 34.1 32.2 37.2
35.1
37.5
37.1
40.7
–
Standard
deviation(dB)
The SP1R has level dependent facilities and the criterion levels as
defined in EN352-7 are displayed below
Model
H
M
L
(dBA)
Foam tips
115.4
118.0
118.1
En
glish
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