Technical data
open
system
An
"open
system"
can
communicate
with
other
devices.
This
section
of
the
manual
explains
how
the
inputs
and
outputs
on
the
rear
panel
allow
two-way
communication
between
the
Multimoog
and
external
devices
such
as
other
synthesizers
and
Moog
accessories.
You
will
understand
"open
system"
communication
with
external
synthesizer
gear
better
if
you
know
how
the
audio,
control,
and
trigger signals
produced
by
the
Multimoog
function
internally
(see
GUIDED
SYNTHESIZER
TOUR
section).
An
electronic
musical
instrument
doesn't
make
sounds—it
makes
electrical
signals.
We
can't
hear
electrical
signals,
so
we
connect
the
instrument
to
an
amplifier
and
speaker
to
translate
signals
into
sounds.
Signals
that
are
translated
into
sounds
are
called
"audio"
signals—they
become
audible.
Electronic
instruments
have
an
audio
output
which
must be
connected
to
the
audio
input
of
a
monitor
(amp
and
speaker).
To
use
a
bit
of
technical
jargon,
when
you
connect
your
Multimoog
to
an
amp,
you
are
"interfacing
systems."
That
means
connecting
two
or
more
devices
so
they
work
together
properly.
With
many
instruments,
after
the
audio
connection
is
made,
further
possibilities
of
"interfacing
systems"
are
very
limited.
Even
if
you
put
sound
modifiers
(phaser,
wah-wah
pedal,
fuzz)
between
the
instrument
and
amp,
you
are
still
dealing
with only
the
audio
signal
produced
by
the
instrument.
The
synthesizer's
potential
for
music-making
through
interfacing
systems
is
greater
than
most
electronic
instruments.
Like
any
electronic
instru
ment,
the
synthesizer
generates
audio
signals
in
order
to
make
sound.
But
the
synthesizer
also
produces
trigger
signals—to
turn
sounds
on
and
off;
and
control
signals—to
dynamically
alter
pitch,
timbre,
and
other
aspects
of
sound.
These
trigger
and
control
signals
are
created
internally
by
the
synthesizer.
If
the
designer
provides
paths
for
them
to
leave
(and
enter)
the
synthesizer,
the
instrument
is
an
"open
system."
That's
what
the
output
and
input
sockets
on
the
rear
panel
of
the
Multimoog
are
all
about.
The
OUTPUTS
make
most
of
the
Multimoog's
audio,
control,
and
trigger
signals
available
to
the
outside
world.
The
INPUTS
allow
these
signals
to
be
fed
into
the
Multimoog
from
the
outside
world.
MULTIMOOG
REAR
CONNECTOR
PANEL
An
open
system
synthesizer
like
the
Multimoog
can
control
and
be
controlled;
trigger
and
be
triggered;
produce
sound
and
modify
sound
from
other
instruments.
You
might
start
thinking
of
the
Multimoog
as
not
only
a
self-contained
musical
instrument,
but
an
expandable
system
of
devices
that
produce,
modify,
trigger,
and
control
sound—as
the
growth
of
your
musical
ideas
requires.
Rear
panel
jacks
are
}A"
mono,
with
the
exception
of
MODULATION
and
GLIDE,
which
are
3/16"
stereo
jacks.
Trigger
signal
connections
require
two-prong
Cinch-Jones
connectors.
Many
sockets
are
dual
function—they
act
as
either
an
input
and/or
an
output.
The
primary
function
(as
named
on
the
rear
panel)
of
such
sockets
will
be
discussed
first.
The
following
pages
describe
the
input
and
output
sockets
for
audio,
trigger,
and
control
signals
available
at
the
rear
panel,
with
some
suggestions
for
musical
use.
After
the
individual
descriptions,
there
is
a
short
"Getting
It
Together"
section
that
shows
how
to
"slave"
one
Multimoog
to
another
using
all
three
types
of
signals.
The
key
to
creative
freedom
using
an
open
system
synthesizer
lies
in
knowing
your
instrument.
Once
you
understand
how
audio,
control,
and
trigger
signals
work
within
the
Multimoog,
their
external
uses
will
become
apparent.
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