Gyraf Audio Gyratec 14 User Manual

Gyraf Audio G14:
Gyraf Audio Gyratec XIV Parallel-passive stereo tube equalizer.
Preliminary user manual, 29. March 2005.
The Gyratec 14 is a true tube passive stereo equalizer, based on
paralleling multiple tuned inductor/capacitor pairs – followed by
a linear tube makeup gain amplifier.

In use:

First of all, when turning on the equalizer, allow five to ten
minutes to heat up the tubes. The sound and levels will change
slightly within this period.
The controls on the Gyratec 14 are as follows:
The inputs are transformer balanced, 5K Ohm "bridging" type, in
order not to load the output of the previous stage too much. The
input connectors are standard XLR jacks, pin 2 hot.
The "bypass" function switch (6) bypasses the unit completely for
reference. The hard way. A relay simply takes out the active
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