A-44 Frequency Response Model 831 Manual
Directional Characteristics
FIGURE A-23 Model 831 with 377B02 Microphone: 1000.00 Hz 1995.25 Hz, 3981.07 Hz
and 7943.28 Hz
LD Model: 831, Serial #: 0099, Normalized to 251.19Hz @ 0° xy
Tested 02/03/06 15:13:24 by Alex T.
Note: 377B02/100916 PRM831/0118
Reference Mic: B&K Model: 4189, Serial Number: 2440346, Tested: 02/03/06 10:50:56
90°
0°
2.0 dB
-2.0 dB
-6.0 dB
-10.0 dB
-14.0 dB
-18.0 dB
-22.0 dB
Mic 1000.00 Hz (2) Mic 1995.26 Hz (2) Mic 3981.07 Hz (2) Mic 7943.28 Hz (2)
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