RANDOM*SOURCE
1
Serge SSG
SERGE
Smooth & Stepped
Generator (SSG)
The Serge Smooth & Stepped Generator (SSG) is an essential part of the Serge system. According to the 1979
catalogue, “it is a complex multi-functional module which can be patch programmed to provide various slew
and sample functions.
The Smooth section will place a postitve and
negative slew on input voltage transitions for lag
effects, voltage controlled portamento and for
low frequency filter applications.” In Cycle-mode
(cycle jack patched to the input), the Smooth
side “will oscillate yielding a voltage controlled
traiangle wave LFO. A high level into the HOLD
input will enable the Smooth Function to be used
as a track-and-hold circuit with voltage controlled
slew rate.
The Stepped funtion can be used as a sample-
and-hold with voltage controlled slew rate
limiting. In Cycle mode, a pulse applied to the
Sample input will generate complex staircase
waveforms for control voltage applications and
for use as audio signals.
The Coupler is an internal comparator which compares the output levels of the Smooth and the Stepped Gen-
erators. This output is useful for generating complex control voltages or random voltages.
The Random*Source version of the Smooth & Stepped Generator is a licensed and authorized adaption of the
original Serge design that provides an increased audio range of the Smooth Generator and a bipolar (“hot”) Cou-
pler output in addition to the regular (unipolar) Coupler output.
The Random*Source SSG + Random Source (RS) 4x4 kit consists of a front panel, a component pcb serving as
an interface to the front panel as well as two main pcbs (one for the SSG, one for the RS), each of which already
contains most of the parts in surface-mount technology (SMT).
This document only describes the SSG side
.
