Performance Graphs; Frequency Response - Benchmark PRE420 Instruction Manual

4-channel microphone preamplifier/mixer
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Performance Graphs

Frequency Response

Audio Precision
+3
+2.8
+2.6
+2.4
+2.2
+2
+1.8
+1.6
+1.4
+1.2
+1
+0.8
+0.6
+0.4
d
+0.2
B
+0
r
-0.2
A
-0.4
-0.6
-0.8
-1
-1.2
-1.4
-1.6
-1.8
-2
-2.2
-2.4
-2.6
-2.8
-3
10
20
Sweep
Trace
Color
1
1
Red
The above graph shows the frequency response of the PRE420 with the 40 Hz high-pass filter off.
The amplitude response measures -0.020 dB at 10 Hz and -0.165 dB at 200 kHz. The bass
response extends well below the 10-Hz limitation of the test equipment, and the high-frequency
response extends well above the 200 kHz limit of the test equipment.
PRE420 Instruction Manual – rev. E
PRE420 - Frequency Response
50
100
200
Line Style
Thick
Data
Axis
Solid
4
Anlr.Level A
Left
500
1k
2k
Hz
Comment
HP Filter Off
5k
10k
20k
02/19/07 11:33:00
50k
100k
200k
Page 17

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