36
ACK-E-2009
Sound Data
ACK 50E/ER NC Curve
10
20
30
40
50
60
70
80
63
125
250
500
1000
2000
4000
8000
Octave-band frequency (Hz)
Sound
p
ressure
level
(dB,
ref
20
μ
Pa)
NC70
NC65
NC55
NC50
NC20
NC25
NC30
NC35
NC40
NC45
NC60
Medium Fan
Super High Fan
High Fan
Low Fan
06_Sound Data_A.indd 36
06_Sound Data_A.indd 36
4/6/2009 11:12:16 AM
4/6/2009 11:12:16 AM