FRONT PANEL CONTROLS
Incoming signals will have up to 20dB of compression introduced.
The EQplus compressor circuitry contains a limiter that is preset
at the factory. The limiter is set to limit the processed signals to
375 millivolts (-9 dB). When this level is reached the 1-st yellow
LED on the bar graph will be on and the top Red (Limiting) LED
will turn on. Additional increases in audio level, using either the
Audio Input Gain Potentiometer or the Equalizer Potentiometers,
will result in a small increase in output from the compressor’s
circuitry. The good news is that the EQplus can produce high
levels of compression while maintaining fidelity and very low
distortion levels. The RF compressors in many radio’s have
difficulty attaining high levels of compression with low levels
of distortions. RF compressors roll off the low end audio response
of the signals they process. The net result of the EQplus
compressor is up to 20dB of signal compression with very low
distortion and little to no change in overall audio bandwidth. .
(12) Compressor / Downward Expander Downward Expander
Level (DE LEVEL) POTENTIOMETER (R47)
This potentiometer works only if the Compressor / Downward
Expander switch (10) is on. The Downward Expander removes
unwanted audible sounds such as fan noise. The Downward
Expander is operated by turning the DE LEVEL Control clockwise
just to the point where unwanted sounds are removed.
(13) EFFECTS PROCESSOR PROGRAM SELECT / OFF
SWITCH (S4)
This 3 position toggle switch is used to select one of two effects or
to turn the Effects Processor off. When the Effects Processor is
off the Effects Processor Delay and Level controls will not modify
internal EQplus audio. The toggle switch in position 1 selects
Effect 1. Effect 1 emulates dampening sound reflecting multiple
times from a surface. The toggle switch in the position 2 selects
Effect 2. Effect 2 emulates sound reflecting once from a surface.
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