Maico MA 41 - Appendix B: Calibration Values and Maximum Levels

Operation Manual MA 41
8100456 Rev.9
56
01/16
Appendix B: Calibration Values and Maximum Levels
Calibration values and Max Levels: Headphone DD45
Coupler IEC 60318-3, Force 4-5 N, ANSI and IEC
Frequency
[Hz]
Tone
RETSPL
dB re 20µPa
NBN
RETSPL
dB re 20µPa
Max Tone
[dB
HL
]
Max NBN
[dB
HL
]
125
47.5
51.5
90
75
250
27.0
31.0
110
95
500
13.0
17.0
120
110
750
6.5
11.5
120
110
1000
6.0
12.0
120
110
1500
8.0
14.0
120
110
2000
8.0
14.0
120
110
3000
8.0
14.0
120
110
4000
9.0
14.0
120
110
6000
20.5
25.5
120
110
8000
12.0
17.0
110
100
Signal
IEC60645-2
RETSPL
IEC Max
Level [dB
HL
]
ANSI S3.6
RETSPL
ANSI Max
Level [dB
HL
]
Speech
20.0
110
18.5
100
SN
20.0
110
18.5
110
WN
0.0
110
0.0
110