Maico MA 2 Series, Operation Manual

Page: 34 / 39

Operation Manual MA 25/MA 25e
MA 27/MA 27e
8104818 Rev. 4 33 19/10/2017
Table 15 Reference Values for Stimulus Calibration
REFERENCE VALUES FOR STIMULUS CALIBRATION
Fre-
quency
[Hz]
Reference equivalent threshold sound pressure level [RETSPL, dB re. 20

Pa]
according to ISO 389-1 with coupler IEC 60318-3
DD45 DD65 HOLMCO 8103
125 48.0 35.5 45.0
250 28.0 25.0 25.5
500 13.0 12.5 11.5
750 6.5 8.0 7.5
1000 6.0 7.0 7.0
1500 7.5 9.0 6.5
2000 7.5 5.0 9.0
3000 8.0 4.5 10.0
4000 7.0 7.8 9.5
6000 20.0 20.0 15.5
8000 11.0 12.0 13.0
Table 16 Frequencies and Maximum Intensities: AC (Air Condition) dBHL
TRANSDUCER MAXIMUM HEARING LEVELS
Frequency
[Hz]
Intensities [dB HL]
DD45 DD65
HOLMCO 8103
Tone Tone Tone
125 70 65 70
250 90 75 90
500 100 90 100
750 100 95 100
1000 100 95 100
1500 100 95 100
2000 100 95 100
3000 100 95 100
4000 100 95 100
6000 100 90 90
8000 90 85 80