Analogue Solutions Concussor - Manual (Page 56)

ANALOGUE SOLUTIONS
CONCUSSOR e&oe (c) 12-2007 56
Controls In Detail – standard operation.
Clock In
The GT8 requires a +5V clock signal. Each clock signal will advance the sequencer 1 step. When the last step is
reached, it resets back to the first step. Take the clock signal from an LFO, Clock module or MIDI to Clock converter.
Step Outs
There are 8 step out sockets. As each step 1 to 8 is reached, the corresponding step out socket will go high (output
+5V). By patching one of these outputs into the Reset In socket, the sequence length can be altered between 1 to 7
steps long. For example, to obtain a five step sequencer, patch the next number up step output into the reset input, i.e.
step out 6. To have an eight step sequencer, no reset patch is needed.
Gate 1/2 Outs
Either of these two sockets will output a +5V gate when at a particular step, the corresponding switch is in either
position Gate 1 or Gate 2. Centre position will result in not Gate from either socket.
The pulse width of the clock input decides the pulse width of the Gate outputs.
Step Button
This allows the sequencer to be manually stepped by step at a time whilst the clock is not running. It can also be
used to reset the sequence. As with most analogue sequencers, step it to the last step (8 or whatever is patched) so
that when you start the clock, the sequencer starts on position 1.
Note: The step button will only work when any clock input signal is at a low state (0V). So it will note work when the
clock input is high. This situation will not arise in normal use, as one would only normally use the step button when the
master clock is stopped (making the clock signal low). If the sequencer is being clocked by a clock divider, even when
the clock is stopped, it is possible that the clock signal may still be high until reseted.
Gate Switches
There are 8 Gate Switches, 1 for each step. They have three positions. When switched left, Gate 1 is active, right,
Gate 2 is active, and centre is no Gate. The voltage range is 0 to 5V.
LED Indicators
There are 8 LEDs. These will light in turn to show step position.
Alternative Applications Of Controls:
Clock In
The sequencer does not have to be stepped through at normal regular intervals as is usual. It can be clocked from
any source, such as the gate from a MIDI-CV converter or monosynth, the trigger out of a drum machine such as the
TR606/808, or from the gate outputs of other analogue sequencers. This allows it to step through the sequencer rhyth-
mically, as and when you want.
If a sine, triangle or sawtooth wave (that goes positive and negative in polarity) is used, the sequencer will step
randomly (backwards and forwards), and also skip beats! This can produce interesting musical results or is good for
sound effects.
Reset In
The reset signal does not need to be taken from the step outputs. It can be taken from an source, such as Gates
from MIDI to CV converters, synths or other analogue sequencers.
Step Outs
These can be used individually to clock other analogue sequencers, to trigger analogue percussion modules, gate
monosynths.
Each step out is basically a divide by 8 clock divide (relative to the clock input signal). Any step output (normally one)
can be used to clock something else 8x slower.