Specifications

30
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
NC-65
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
MDSB400BR NC CURVE
MDSB500BR NC CURVE