Technical data

trigger theMultimoog. No power supply or circuitry is
required; when the switch is closed a trigger is
produced. To show how easily the Multimoog can be
triggered, touch a coin to both prongs of the S-TRIG
OUTPUT. You're now using this plug as a trigger input
and you've triggered the Multimoog by making a
switch closure—without use of circuitry. The S-TRIC
INPUT functions the same way, but requires insertion
of a Cinch-Jones plug. When the two wires attached to
the inserted Cinch-Jones plug are touched together, a
"switch closure/' or S-trigger is produced and the
Multimoog speaks. Since the S-TRIC INPUT is
internally "debounced" to clean up dirty switch
closures, the switch does not require the addition of a
capacitor.
The Moog 1121 Footswitch can be modified to
trigger the Multimoog. The existing output plug on
the 1121 must be replaced with a Cinch-Jones plug to
be compatible with the 5-772/C INPUT socket.
The S-TRIC INPUT acts only as an input, but is
very versatile. It is compatible with standard logic
families (RTL, TTL, CMOS, DTL). The threshold of the
S-TRIG INPUT is +2 volts; signals less than 2 volts cause
the Multimoog to be triggered. The S-TRIC INPUT
may also be used with modules or synthesizers that
produce V-triggers (voltage triggers), such as the
Moog 960, 961, 962, Sequencer Complement, 921
Oscillator, Moog Sonic Six synthesizer, and even ...
non-Moog synthesizers! The following graphic indi
cates wiring procedure:
V-TRIG TO S-TRIC CONNECTOR
FROM
V-TRIG
OUTPUT
JACK
TIP GROUND
SHIELDED CABLE
SMALL PRONG
V."
SWITCHCRAFT
S250
MONO PHONE PLUG
GROUND
TO S-TRIG INPUT
OF MULTIMOOG
LARGE PRONG
S-TRIG "OFF1
V-TRIG ON"
CINCH JONES
P302-CCT
CABLE PLUG
VOLTAGE
V-TRIG "OFF"
S-TRIG "ON"
The above cable acts only as a connector; it
does not transform V-triggers into S-triggers. As
shown above, the cable will provide an S-trigger only
when a V-trigger is "off."
Many synthesizers produce a V-trigger (voltage
HIGH (ABOVE +2V)
LOW (BELOW +2V)
trigger) when a key is depressed. If you wish to trigger
the Multimoog using the V-trigger (sometimes called
"gate") output of such an instrument, insert the
following circuitry between the phone plug and
Cinch-Jones plug in the previous diagram.
V-TRIG TO S-TRIG CONVERSION CIRCUIT
TIP
LARGE
PRONG
IN 4148
DIODE
JONES PLUG
The circuit inverts a V-trigger and malces it an S-
trigger. (This V-Trig to S-Trig cable is available from
Moog Music; part #74-221).
The S-TRIC INPUT accepts timing information
from external sources such as another keyboard, a
switch, and Moog Accessories such as the 1130 Drum
Controller, The S-TRIC INPUT expands the musical
potential of the instrument. For instance, use of the
1130 Drum Controller to trigger the Multimoog using
the S-TRIG INPUT allows the drummer to articulate
sound with sticking techniques that would be
impossible on the keyboard Trigger input/output is a
necessary part of any totally "open system"
synthesizer.