Larson Davis SoundAdvisor 831C Reference Manual page 170

Table A.6 Octave Band Analysis 1/3 Octave Linearity Range
Nominal
Frequency High OBA Range
(Hz)
0 dB
Gain (dB)
6.3 ≥ 107
34 to 140
8.0 ≥ 108
32 to 140
10.0 ≥ 110
30 to 140
12.5 ≥ 111
29 to 140
16.0 ≥ 112
28 to 140
20.0 ≥ 114
27 to 140
25.0 ≥ 115
25 to 140
31.5 ≥ 116
24 to 140
40.0 ≥ 117
23 to 140
50.0 ≥ 118
22 to 140
63.0 ≥ 119
22 to 140
80.0 ≥ 120
21 to 140
100 ≥ 120
20 to 140
125 ≥ 121
20 to 140
160 ≥ 121
20 to 140
SoundAdvisor Model 831C
Normal OBA Range
+20 dB 0 dB +20 dB
Gain (dB) Gain (µdB) Gain (dB)
≥ 90 ≥ 81
31 to 120 29 to 110 28 to 90
≥ 91 ≥ 82
29 to 120 28 to 110 27 to 90
≥ 92 ≥ 83
28 to 120 27 to 110 26 to 90
≥ 93 ≥ 85
27 to 120 25 to 110 25 to 90
≥ 94 ≥ 86
26 to 120 24 to 110 24 to 90
≥ 95 ≥ 87
25 to 120 24 to 110 23 to 90
≥ 96 ≥ 88
24 to 120 23 to 110 22 to 90
≥ 97 ≥ 89
23 to 120 22 to 110 21 to 90
≥ 99 ≥ 90
22 to 120 21 to 110 20 to 90
≥ 100 ≥ 91
21 to 120 20 to 110 19 to 90
≥ 101 ≥ 91
20 to 120 19 to 110 18 to 90
≥ 102 ≥ 92
19 to 120 18 to 110 17 to 90
≥ 103 ≥ 94
18 to 120 17 to 110 16 to 90
≥ 104 ≥ 95
17 to 120 16 to 110 15 to 90
≥ 105 ≥ 96
16 to 120 15 to 110 14 to 90
Nominal
Frequency
(Hz)
Gain (dB)
≥ 62 6.3
41 to 140
≥ 63 8.0
39 to 140
≥ 64 10.0
36 to 140
≥ 65 12.5
34 to 140
≥ 66 16.0
33 to 140
≥ 67 20.0
18 to 140
≥ 68 25.0
16 to 140
≥ 69 31.5
16 to 140
≥ 70 40.0
17 to 140
≥ 71 50.0
18 to 140
≥ 72 63.0
18 to 140
≥ 73 80.0
19 to 140
≥ 74 100
19 to 140
≥ 75 125
20 to 140
≥ 76 160
21 to 140
High OBA Range Normal OBA Range
0 dB
0 dB +20 dB
Gain
Gain (µdB)
(µdB)
≥ 99 ≥ 97 ≥ 104
24 to 120 6 to 110
≥ 102 ≥ 100 ≥ 106
21 to 120 4 to 110
≥ 104 ≥ 101 ≥ 109
19 to 120 1 to 110
≥ 106 ≥ 102 ≥ 110
18 to 120 0 to 110
≥ 108 ≥ 105 ≥ 111
15 to 120 -1 to 110
≥ 123 ≥ 115 ≥ 112
5 to 120 -2 to 110
≥ 125 ≥ 121 ≥ 113
-1 to 120 -3 to 110
≥ 124 ≥ 122 ≥ 114
-2 to 120 -4 to 110
≥ 123 ≥ 122 ≥ 114
-2 to 120 -4 to 110
≥ 123 ≥ 121 ≥ 113
-1 to 120 -3 to 110
≥ 122 ≥ 121 ≥ 112
-1 to 120 -2 to 110
≥ 122 ≥ 120 ≥ 112
0 to 120 -2 to 110
≥ 121 ≥ 119 ≥ 111
1 to 120 -1 to 110
≥ 120 ≥ 119 ≥ 111
2 to 120 -1 to 110
≥ 119 ≥ 118 ≥ 110
2 to 120 0 to 110
+20 dB
Gain
(µdB)
≥ 86
4 to 90
≥ 90
0 to 90
≥ 92
-2 to 90
≥ 93
-3 to 90
≥ 94
-4 to 90
≥ 95
-5 to 90
≥ 95
-5 to 90
≥ 96
-6 to 90
≥ 97
-7 to 90
≥ 97
-7 to 90
≥ 97
-7 to 90
≥ 98
-8 to 90
≥ 98
-8 to 90
≥ 99
-9 to 90
≥ 99
-9 to 90
A-10