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* Equalizer IN/OUT Switch
Precise equalizer adjustment can be made while comparing the equalized sound effect with the
flat sound by use of the Equalizer IN/OUT switch.
*Foldback 1, 2 and Echo 1, 2
The block diagram indicates the overall signal flow of the FB and Echo circuits. The FB circuit
is basically designed to derive the pre fader signal mainly, and the Echo circuit the post fader
signal. The pre-post fader selector switch is provided for FB 2 and Echo 2. This allows three
FB's (pre fader) by setting the Echo 2 selector switch to the "pre" position, leaving one Echo
(post fader).
*Group/Foldback, Group/Echo Modules
The Group/Foldback and Group/Echo modules are the same circuit-wise, but to comply with
the purpose in actual use, the label indications (FB or Echo) on the modules and bus line
connections in the frame/case are different.
The GFM and GEM are equipped for three functions; master control of the FB output or Echo
output, controls of the AUX IN or Echo IN, and group master controls. The group outputs, FB
outputs and echo outputs are XLR type connectors and are provided on the rear of the frame.
1. FB OR ECHO MASTER CONTROL
2. AUX IN OR ECHO IN CONTROL
3. GROUP MASTER CONTROL
* Program Module
Each program module incorporates two program output channels. The four group volume
controls for each program output channel are the volume matrix system which mix the signals
derived from the group master faders on the GFM-7 and GEM-7. The mixed signals are finally
adjusted by the program master control on the program module and fed to the program output.
(Fig.
20)
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