Sound Power (Calculated Three Fan)
Octave Band Data
A-Weighted, dBA
Frequency
(Hz)
Percent Fan Speed
Percent Fan Speed
20%
50%
80%
100%
20%
50%
80%
100%
63
55
74
80
85
29
48
54
59
125
56
73
82
92
40
57
66
76
250
57
70
82
88
48
62
73
79
500
61
68
82
88
58
65
79
85
1000
44
66
80
86
44
66
80
86
2000
37
60
76
84
38
61
77
85
4000
35
1
54
70
77
36
1
55
71
78
8000
34
1
47
64
72
33
1
46
63
71
Total
64
78
89
96
59
70
84
91
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.14 Sound Power Data for MCL165, dB
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
56
76
82
87
30
49
55
60
125
57
74
83
94
41
58
67
77
250
58
72
83
89
49
63
74
81
500
62
70
84
89
59
66
80
86
1000
45
67
81
87
45
67
81
87
2000
39
61
77
85
40
62
78
86
4000
37
55
71
78
38
56
72
79
8000
35
48
65
73
34
47
64
72
Total
65
80
90
97
60
71
85
92
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.15 Sound Power Data for MCL220, dB
81
Summary of Contents for Liebert MC series
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