Interacoustics AC40 Instructions D'utilisation page 269

AC40 RETSPL-HL Tabel
Sound attenuation values for earphones
Frequency
TDH39/DD45
with MX41/AR
[Hz]
125
160
200
250
315
400
500
630
750
800
1000
1250
1500
1600
2000
2500
3000
3150
4000
5000
6000
6300
8000
*ISO 8253-1 2010
Attenuation
EAR 3A IP30
or PN 51 EAR 5A
Cushion
[dB]* [dB]*
3 33
4 34
5 35
5 36
5 37
6 37
7 38
9 37
-
11 37
15 37
18 35
-
21 34
26 33
28 35
-
31 37
32 40
29 41
-
26 42
24 43
HDA200 HDA300
[dB]* [dB]
15 12.5
15
16
16 12.7
18
20
23 9.4
25
27
29 12.8
30
31
32 15.1
37
41
46 28.8
45
45
44 26.2