Specifications

25
0
10
20
30
40
50
60
70
80
125 250 500 1000 2000 4000 8000
Octave-band Frequency (Hz)
Sound Pressure Level (dB, ref 20μPa)
NC-20
NC-25
NC-30
NC-35
NC-40
NC-45
NC-50
HI FAN
NC-60
NC-55
0
10
20
30
40
50
60
70
80
125 250 500 1000 2000 4000 8000
Octave-band Frequency (Hz)
Sound Pressure Level (dB, ref 20μPa)
NC- 55
NC- 60
NC- 30
NC- 35
NC- 40
NC- 45
NC- 50
HI FAN
NC- 25
NC- 20
MDB200BR NC CURVE
MDB250BR NC CURVE