Technical data
OPEN
SYSTEM—GETTING
IT
TOGETHER
The
open
system
INPUTS
and
OUTPUTS
can
provide
powerful
ways
of
expanding
your
music-
making
once
you
realize
what
audio,
control,
and
trigger
signals
can
do
for
you.
It's
important
to
understand
that
synthesizers
are
very
dumb—from
a
point
of
view
of
"systems
interfacing."
They
must
be
told
explicitly
what
you
want
to
happen.
You
may
begin
with
a
general
idea
like
"I
want
to
slave a
second
Multimoog
to
mine
and
play
both
from
my
keyboard."
But
at
some
point,
you
have
to
go
from
the
general
to
the
specific
interfacing
requirements
for
each
class
of
signal
involved.
Example
given:
AUDIO
REQUIREMENTS
GENERAL:
"I
want
to
hear
the
sound
of
both
Multimoogs."
SPECIFIC:
Audio
signal
from
each
Multimoog
must
be
transduced.
ACTION:
Connect
the
AUDIO
OUTPUT
of
each
Multimoog
to
amp.
TRIGGER
REQUIREMENTS
GENERAL:
"I
want
to
hear
the
sound
of
both
when
the
keyboard
of
the
Master
Multimoog
is
played."
SPECIFIC:
Trigger
signals
must
be
supplied
from
the
Master
to
the
Slave
Multimoog
to
provide
articulation
of
both.
ACTION:
Connect
the
S-TRIG
OUTPUT
of
the
Master
Multimoog
to
the
S-TRIG
INPUT
of
the
Slave
Multimoog.
CONTROL
REQUIREMENTS
GENERAL:
"I
want
the
pitch
of
both
instruments
to
follow
the
keyboard
of
the
Master
Multimoog."
SPECIFIC:
The
OSCILLATOR
section
of
both
Multimoogs
must
be
controlled
by
the
keyboard
signal
of
the
Master
Multimoog.
ACTION:
Connect
KBD
OUTPUT
of
theMaster
Multimoog
to
the
OSC
INPUT
of
the
Slave
Multimoog.
The
following
diagram
shows
the
basic
connection
for
a
Master-Slave
interface
for
two
Multimoogs:
S-TRIG
OUTPUT
S~\
AL
AUDIO
OUTPUT
S-TRIG
INPUT
FRONT
PANEL
D
KEYBOARD
TO
AMP
MASTER
AUDIO
OUTPUT
FRONT
PANEL
Q
KEYBOARD
TO
AMP
SLAVE
The
Master
Multimoog
triggers
and'controls
both
itself
and
the
Slave
Multimoog.
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