Operating Instructions MA 25 / MA 25e
operating instructions_8012238-4_MA25_E_13a
20
8012238-4 10/13
Calibration values:
AC Headphone Holmco 8103 B 26 Force 13...16 N
Frequency [Hz]
Equivalent
Threshold
Reference
Level
according to ISO 389 - 2
Measured with Coupler
IEC 60 318-3 [dB] (re 20
Pa)
Sound Masking
[dB]
125
39.5
12.5
250
25
14.5
500
18.5
18.5
750
13.5
-
1000
12.0
25
1500
10.0
-
2000
9.5
36.5
3000
9.0
-
4000
9.0
44
6000
19.5
-
8000
20.0
35
Calibration values:
AC-Headphone TDH39
Force 4-5 N
Frequency [Hz]
Reference equivalent threshold according to
ISO 389-1 with coupler IEC 60 318-3
[dB] (re 20
Pa)
125
45
250
25.5
500
11.5
750
7.5
1000
7
1500
6.5
2000
9
3000
10
4000
9,5
6000
15.5
8000
13
Summary of Contents for MA 25e
Page 1: ...Operating Instructions MA 25 MA 25e...
Page 2: ......
