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residual signal heard when the internal BALance OSCillator is
put into action.
BALANCE OSCILLATOR
As an aid in correctly setting the PLATE and CATHODE trim
pots, the compressor is equipped with a built-in 330 Hz test-
balance oscillator. The BAL OSC is asserted, and a balance-
indicating signal becomes audible through the PROGRAM outputs,
when the METER switch is rotated to the BAL OSC position at
full clockwise rotation.
The balance test of the variable transconductance tubes is
done by impressing upon them a common mode (not push-pull)
signal. When the balance is ideal, there will be zero output
of the test signal at the program output jack.
In practice, this is rarely the case, therefore the PLATE and
CATHODE trim pots are slowly rocked back and forth to produce
the deepest null of the test tone. There will be several test
tone null pair settings of these controls, and the deepest
null should be chosen as representing the best setting. This
null should occur near the center of the trim pot rotation
(+/- 20% of center). If not, the variable transconductance
tubes may need replacement with better matched devices.
NOTE: Allow the unit to fully warm up before
interpreting any test results. Otherwise the results
will not be valid.
SLaVe CAL control
The SLV CAL control permits GR line-up with other linked Glory
Compressors and is discussed below.
Rear Panel Features
LINK switch and STEREO LINK TRS jacks
Each Glory Compressor is equipped with a pair of three-circuit
(TRS) Control Voltage jacks on the rear panel. The two are
electrically identical for easy daisy-chaining arrangements.
The jack’s tip contact is the CV send voltage, and the ring is
the CV receiver circuit. The sleeve is circuit ground. A
program-level and control-setting dependent control voltage is
developed within each unit, and may be sent (by daisy-
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