
29
Sound Data MVCU-2009
MCK050A
NC CURVES
MCC025C
NC CURVES
0
10
20
30
40
50
60
125 250 500 1000 2000 4000 8000
Octave-band frequency (Hz)
Sound pressure level (dB,ref20μPa)
High Fan
NC-30
NC-35
NC-40
NC-45
Low Fan
Medium Fan
NC-25
NC-20
0
10
20
30
40
50
60
125 250 500 1000 2000 4000 8000
Octave-band frequency (Hz)
Sound pressure level (dB,ref20μPa)
High Fan
NC-30
NC-35
NC-40
NC-45
Low Fan
Medium Fan
NC-25
NC-20
06_Sound Data.indd 2906_Sound Data.indd 29 4/28/2009 11:16:56 AM4/28/2009 11:16:56 AM
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