Maico MA 42 Service Manual

Service Manual MA 42
D-0125965 Rev. D
51
18/05/2022
Calibration values: Sound field
Reference equivalent threshold sound pressure level and maximum hearing levels
For SP90A, SP90, SP85A and AP70FF Amplifier
ANSI S3.6:2010
Sound Field max. SPL
ISO 389-7:2005
For Sound Field max. HL
subtract the selected
RETSPL value
Frequency
[Hz]
Binaural
Binaural to
Monaural
Free Field Line
0°
45°
90°
Correction
Tone/Ped.
Noise
NBN
RETSPL
[dB]
RETSPL
[dB]
RETSPL
[dB]
RETSPL
[dB]
Max. SPL [dB]
Max. SPL
[dB]
125
22.0
21.5
21.0
2
102.0/90.0
97.0
250
11.5
10.5
9.5
2
106.5/94.5
101.5
500
4.5
1.5
0.0
2
104.5/92.5
99.5
750
2.5
-1.0
-2.5
2
102.5/90.5
97.5
1000
2.5
-1.5
-3.0
2
102.5/90.5
97.5
1500
2.5
-1.0
-2.5
2
102.5/90.5
97.5
2000
-1.5
-4.5
-3.5
2
103.5/91.5
98.5
3000
-6.0
-11.0
-8.5
2
104.0/92.0
94.0
4000
-5.5
-9.5
-5.0
2
104.5/92.5
99.5
6000
4.5
-3.0
-5.0
2
104.5/92.5
99.5
8000
12.5
7.0
4.0
2
92.5/80.5
87.5
White
Noise
0.0
-4.0
-5.5
2
-
100
ANSI S3.6:2010
Sound Field max.
SPL
ISO 389-7:2005
For Sound Field max.
HL subtract the
selected RETSPL value
Binaural
Binaural to
Monaural
Free Field Line
0°
45°
90°
135°
180°
Correction
0° - 45° - 90°
RETSPL
[dB]
RETSPL
[dB]
RETSPL
[dB]
RETSPL
[dB]
RETSPL
[dB]
RETSPL
[dB]
Max. SPL [dB]
Speech
15.0
11.0
9.5
10.0
13.0
2
100.0
Speech
Noise
15.0
11.0
9.5
10.0
13.0
2
100.0
Speech
WN
17.5
13.5
12.0
12.5
15.5
2
97.5

Maico MA 42 Specifications

General

Brand	Maico
Model	MA 42
Category	Medical Equipment
Language	English