Maico MA 50 Operating Instructions Manual page 24

Calibration values:
Frequency [Hz]
125
250
500
750
1000
1500
2000
3000
4000
6000
8000
Calibration values:
Frequency [Hz]
250
500
750
1000
1500
2000
3000
4000
6000
Geba_MA50_Fe_11a.doc
Operating Instructions MA 50
AC-Receiver Telephonics TDH 39
Reference equivalent threshold
sound pressure level
ISO 389 - 1
with Coupler IEC 318-2
[dB] (re 20 Pa
45
25.5
11.5
7.5
7
6.5
9
10
9.5
15.5
13
BC-Receiver Radioear B 71
Reference equivalent threshold
force level
ISO 389 - 3
)
[dB] (re 1N
67
58
48.5
42.5
36.5
31
30
35.5
40
ANSI S3.6-1
with Coupler NBS 9A
) [dB] (re 20 Pa
45
25.5
11.5
8
7
6.5
9
10
9.5
15.5
13
ANSI S3.6-1996
)
[dB] (re 1N
67
58
48.5
42.5
36.5
31
30
35.5
-
22
Force: 4 ... 5 N
sound damping
)
[dB]
3
5
7
-
15
-
26
-
32
-
24
Force: 4.9 ... 5.9 N
air radiation
mean / maximum
[dB]
-
-
-
-
-
-
4 / 18
-
10.5 / 31
851 406/2 11/11