SERGE-MODULAR.COM
SERGE
MODULAR
3
GTO
Installation
Always turn the eurorack case off and unplug the power cord before plugging or unplugging any eurorack power
cable . Do not touch any electrical terminals when attaching any eurorack power (bus board) cables .
The Serge GTO is an electronic music module requiring 50mA of +12VDC and 50 mA of -12VDC regulated
voltages and an appropriate power connector to operate . It must be properly installed into a eurorack format
modular synthesizer system case .
POWER YOUR CASE OFF before installing the module . Please use the power cable provided to connect the small
end of the power cable to the module: RED STRIPE to “-12V”, as indicated on the back of the module . Carefully
install and secure the module in your case . Power on, and flip the CYCLE switches to the DOWN position, SMPL
switche to the CENTER position . You should see an LED flashing for each channel . If either side seems constantly
ON or OFF, turn the RATE knob to the center position or slightly below to see each side cycling . Your module
should be ready to go now :-)
Please beware: Powering the module on anything more (or less) than +/-12V is not recommended and may
damage the module . Feeding any of the inputs (or outputs) with voltages outside a +/-12V range may damage the
module . This type of damage is not covered under warranty .
Overview
The Serge GTO is an evolution of the famous Serge Smooth & Stepped Generator . As its predecessor, it has two
sides, that are not identical, but differ in some aspects . The left side was traditionally the “Smooth Side” while the
right side was the “Stepped Side” . In the GTO, however, the right side can to some extent - in particular when the
SMPL switch (14) is in CENTER position - behave like a “smooth” side .
The GTO is a dual “lag and hold” device that can be quite a few things, depending on how you use it . It can be
patched as a slew, portamento, oscillator, LFO, metallizer, triggered staircase generator, subharmonic generator/
divider, VCA, lowpass-gate, sample and hold, track and hold, set of comparators, trigger delay, one-shot, envelope
follower, quadrature function generator, “bit-crusher” and much more .
What’s new? What’s different?
The Serge GTO is not just an improved SSG, but almost a complete redesign with the focus on stability, precision
and speed . Each side has a
temperature-compensated 1V/Oct
input for use as an oscillator with a
frequency
range of up to 20kHz
(left) and
8kHz
(right) . Each side tracks over 5 or 6 octaves . The right side offers 3 different
Sample modes plus a RUN input that vastly extend the track-and-hold possibilities of the classic SSG .
