EN-6
Frequency Response
+5
-5
20
50
100
200
500
1000
2000
5000
10000
20000
(Hz)
(dB)
0
Freq
units
31.5
Hz
63
Hz
125
Hz
250
Hz
500
Hz
1000
Hz
2000
Hz
4000
Hz
8000
Hz
dB
+0.6
+0.8
+0.2
+0.0
0.0
0.0
+0.8
+1.3
+3.0
Typical free-field response 0
°°°°
incidence
20
-20
-10
0
10
20
(dB)
50
100
200
500
1000
2000
5000
10000 20000
(Hz)
Freq
units
31.5
Hz
63
Hz
125
Hz
250
Hz
500
Hz
1000
Hz
2000
Hz
4000
Hz
8000
Hz
dB
+0.1
+0.4
0.0
+0.5
-0.2
0.0
+0.2
0.0
-0.5
Typical diffuse-field response for random incidence
Preamplifier:
•
Model: AP-21
•
Input impedance: 470M
Ω
•
Output impedance: 550
Ω
at 1000Hz
•
Maximum input voltage: 2.828V peak-to-peak at electrical input for no damage.
•
Measuring input (viewed from top of instrument):
A: ground
B: ground
C: +10V
D: signal input
E: N.C.
