Interacoustics ad226 Instructions For Use Manual page 30

General properties for earphones
Sound attenuation values for earphones
Frequency
DD45 or TDH39 with MX41/
AR or PN 51 cushion
[Hz] [dB]
125 3
160 4
200 5
250 5
315 5
400 6
500 7
630 9
750 -
800 11
1000 15
1250 18
1500 -
1600 21
2000 26
2500 28
3000 -
3150 31
4000 32
5000 29
6000 -
6300 26
8000 24
Attenuation
EAR-Tone 3A
[dB]
33,5
34,5
34,5
35,0
33,0
39,5
43,5