Sound Power (Calculated Four Fan)
Octave Band Data
A-Weighted, dBA
Frequency
(Hz)
Percent Fan Speed
Percent Fan Speed
20%
50%
80%
100%
20%
50%
80%
100%
63
58
1
70
83
81
32
1
44
57
55
125
55
74
83
89
38
58
67
73
250
52
70
82
88
44
61
73
79
500
59
67
80
85
56
64
77
82
1000
46
65
78
84
46
65
78
84
2000
37
1
60
74
81
38
1
61
75
82
4000
36
1
52
67
74
37
1
53
68
75
8000
36
1
45
62
69
35
1
44
61
68
Total
63
77
89
93
57
70
82
89
1
These values indicate the upper boundary limit due to background noise levels. Actual field values may be equal to or less than that listed.
Table B.8 Sound Power Data for MCM160, dB
77
Summary of Contents for Liebert MC series
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