Maico MA 28 - Page 49

Operation Manual MA 28
8506915 Rev. 5
48
05/05/2021
Calibration values: AC-Headphone Radioear DD65 v2
Coupler IEC 60318-1
FREQUENCY
[HZ]
TONE
IEC 60318-1
RETSPL DB
RE 20µPA
NBN
IEC 60318-1
RETSPL DB
RE 20µPA
TONE
MAX
LEVEL
[DB HL]
NBN
MAX
LEVEL
[DB HL]
SOUND
ATTENUA-
TION [DB]
ISO 4869-1
125
30.5
34.5
85
70
8.3
250
17.0
21.0
100
85
15.5
500
8.0
12.0
110
95
26.1
750
5.5
10.5
110
100
-
1000
4.5
10.5
110
100
32.4
1500
2.5
8.5
110
100
-
2000
2.5
8.5
110
95
43.6
3000
2.0
8.0
110
100
-
4000
9.5
14.5
110
95
43.8
6000
21.0
26.0
100
85
-
8000
21.0
26.0
95
80
45.6
White Noise
-
0.0
-
110
-
Table provides max levels for PSE power only. USB power results in reduced max
levels.