Performance data (cont) – Bryant 583B User Manual
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PERFORMANCE DATA (CONT)
ECONOMIZER/1-IN. FILTER PRESSURE DROP
(in. wg)
OUTDOOR SOUND: OCTAVE BAND DATA — DECIBELS (Lw(A))
Bels — Sound Levels (1 bel = 10 decibels)
UNIT 583B
PRESSURE DROP
024-036
0.20
042-060
0.25
UNIT
583B
Frequency (Hz)
024
030
036
042
048
060
63
44.8
48.0
50.0
49.1
51.4
53.7
125
60.4
58.2
60.4
63.9
65.2
62.6
250
58.3
59.2
61.6
65.2
69.7
65.9
500
64.8
65.8
66.9
67.9
72.7
70.6
1000
66.9
67.7
67.8
66.7
72.9
71.6
2000
64.3
64.8
64.6
63.8
69.8
68.2
4000
59.8
61.8
60.7
60.2
65.8
65.8
8000
51.8
53.6
52.8
50.7
57.9
58.3