0
10
20
30
40
50
60
125 250 500 1000 2000 4000 8000
Octave-band frequency (Hz)
Sound pressure level (dB, ref 20µPa)
High Fan
Medium Fan
Low Fan
NC-20
NC-30
NC-45
NC-40
NC-25
NC-35
MWM 015 G/GR , M5WM 015 G/GR
NC CURVES
37
Measured in anechoic room at 1m in front and 0.8m below the vertical centre line of the unit
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