APPENDIX A
Tables
33
Table A.34a 4184-A 0
°
(Top), sensitivity variations for Weatherproof Microphone Unit Type 4184-A with the Microphone
Preamplifier connected to a microphone extension cable, at sound incidence angles within
±
°
from the reference
direction
Nominal
Exact
Max Variation
Max Variation
Max Variation
Frequency
Frequency
± 30°
± 90°
± 150°
(6 digits)
Hz
Hz
dB
dB
dB
500 Hz
501.187 Hz
0.17
0.23
0.42
630 Hz
630.958 Hz
0.07
0.18
0.33
800 Hz
794.328 Hz
0.08
0.18
0.30
1000 Hz
1000 Hz
0.10
0.12
0.25
1250 Hz
1258.93 Hz
0.12
0.29
0.32
1600 Hz
1584.89 Hz
0.12
0.46
0.46
2000 Hz
1995.26 Hz
0.13
0.41
0.46
2240 Hz
2238.72 Hz
0.22
0.45
0.59
2500 Hz
2511.89 Hz
0.27
0.63
0.81
2800 Hz
2818.38 Hz
0.25
0.71
1.11
3150 Hz
3162.28 Hz
0.28
0.64
1.22
3550 Hz
3548.13 Hz
0.35
1.00
1.57
4000 Hz
3981.07 Hz
0.64
1.59
2.11
4500 Hz
4466.84 Hz
0.84
2.04
2.41
5000 Hz
5011.87 Hz
0.75
2.13
2.66
5600 Hz
5623.41 Hz
0.60
2.31
2.96
6300 Hz
6309.58 Hz
1.24
2.46
2.61
7100 Hz
7079.46 Hz
1.52
2.53
3.10
8000 Hz
7943.28 Hz
1.64
2.37
2.79
8500 Hz
8413.95 Hz
2.03
2.80
3.23
9000 Hz
8912.51 Hz
2.21
2.55
2.76
9500 Hz
9440.61 Hz
2.38
2.80
2.91
10000 Hz
10000 Hz
2.63
3.30
3.32
10600 Hz
10592.5 Hz
2.29
3.31
3.64
11200 Hz
11220.2 Hz
2.01
3.31
3.31
11800 Hz
11885.0 Hz
2.49
3.68
3.93
12500 Hz
12589.2 Hz
2.60
3.60
3.60
13200 Hz
13335.2 Hz
2.34
2.84
3.21
14000 Hz
14125.4 Hz
2.29
3.54
3.54
15000 Hz
14962.4 Hz
2.40
3.39
3.73
16000 Hz
15848.9 Hz
2.57
3.08
3.31
17000 Hz
16788.0 Hz
3.26
3.76
3.84
18000 Hz
17782.8 Hz
3.26
3.51
4.18
19000 Hz
18836.5 Hz
2.35
3.52
3.75
20000 Hz
19952.6 Hz
2.00
2.61
3.21
Summary of Contents for 4184-A
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