J-654 hamProAudio
TM
Microphone Equalizer/Conditioner
Instruction & Technical Manual
-5-
SYSTEM CONTROLS
MFJ-654 JACKS AND CONTROLS
COMPRESSION
MONITOR
LEVEL
DELAY
OUTPUT
BYPASS POWER
INPUT
DOWNWARD EXPANSION
Max
Min
Max
Min
OFF
ON
OUTPUT LEVEL
POWER
MICROPHONE IN
EQ INPUT LEVEL
Max
Min
Max
Min
Max
Min
400 Hz
200 Hz
100 Hz
50 Hz
+
-
3200 Hz
2400 Hz
1600 Hz
800 Hz
+
-
+
-
+
-
+
-
+
-
+
-
+
-
ON
OFF
ON
OFF/BYPASS
MFJ Microphone
Equalizer/Conditioner
hamProAudio™
MFJ-654
EQUALIZER
0 0 0 0 0 0 0 0
Max
Min
Figure 1: MFJ-654 Front Panel Jacks and Controls
Bottom Rows
1.
8 pin Microphone Input Jack:
Accepts input from any standard 8 pin
microphone.
2.
RJ-45 Microphone Input Jack:
Accepts the input from a standard RJ-45
Microphone.
3.
Compression Level:
Controls the Compression function from no
Compression to 15:1 maximum Compression.
4.
Equalizer Input Level LED:
This LED allows you to set the input level to
the Equalizer section.
5.
Input Level Gain:
This control sets the input level to the Equalizer
section.
6.
Output Gain Level LED:
A one time adjustment will allow this LED to
monitor your output level and allow you to set the gain level for any input
source easily.
7.
Output Level Gain:
Allows a wide range of output levels for various
radios or other uses.
8.
Downward Expansion Level:
Allows adjustment of the required audio
level to allow the unit to pass audio. Great for noisy conditions.
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