SoundAdvisor Model 831C
A-23
FIGURE A-9
Model 831 with 377B02 Microphone
FIGURE A-10
Directional Characteristics
-14
-13
-12
-11
-10
-9
-8
-7
-6
-5
-4
-3
-2
-1
0
20
0
20
00
20
000
Decibels
(dB re
1000
Hz @
0°)
Frequency (Hz)
0°
30°
70°
110°
150°
Mic at n°
-22
-18
-14
-10
-6
-2
2
0°
10°
20°
30°
40°
50°
60°
70°
80°
90°
100°
110°
120°
130°
140°
150°
160°
170°
180°
190°
200°
210°
220°
230°
240°
250°
260°
270°
280°
290°
300°
310°
320°
330°
340°
350°
1000 Hz
