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Korg Sigma Owner's Manual Page 15

Performing synthesizer.
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3.
INPUT JACKS,
OUTPUT JACKS,
AND
CONNECTIONS
input
jack
for
units
like
the
MS-01
foot
control
pedal,
used
for
remote
control
SYNTHE
section
tone
color,
(by varying
LPVCFfc)
input
jack
for
external
control
from
MS-01
(or
other
unit)
over Sigma's
total
pitch.
Maximum
pitch fluctuation
is
3-
octaves.
©
Output
jack
for
Sigma
keyboard's
trigger
signal.
Use
with
KBD CV OUT
to
play
additional synthesizers.
Output
jack
for
Sigma
keyboard's
control
voltage
signal.
Use
when
playing other
voltage controlled synthesizers
such
as
the
MS-50.
Input jack
for trigger
signal
from
external
unit
for
control
of
the
Sigma's
EG
(envelope
generator).
Used
with
VCO
CV
IN,
to
play
Sigma
without
using
the
Sigma
keyboard.
Input jack
for
control
voltage
signal
(from
MS-03, SQ-10. MS-10. MS-20,
or other
unit) that
controls
Sigma's VCO's.
&
Output
jack
for
stereo
headphones.
©
Output
jack
for
INST
section
audio
signal.
©
Output
jack
for
SYNTHE
section
audio
signal.
•If
only
one
of
these jacks
is
connected
to
an
amp,
then
that
jack's
output
signal
will
be
a
mixture
of
both
the
INST and
SYN-
THE
section
signals.
Precautions
when
using
guitar
or
bass
amps
Synthesizer output
signals are very large
compared
to
the signals
from
a
guitar or
bass
pickup.
Noise
can be minimized by
following
these steps
to
get the correct
volume
settings
on
the
Sigma
and
the
guitar or
bass
amp:
First
turn
on
three
of
the
Sigma
tablets,
and
set
the
Sigma
volume knob
to
"8"
or
"9".
Then
turn
up
the amplifier
volume knob
to
get the
loudness you
want.
4.
CAUTION
Before
plugging
in
the
Sigma's
AC
power
cord,
always
make
sure
the
AC
line
voltage
matches
the
Sigma's
voltage
rating.
If
power
supply
voltage
is
less
than
90%
of
the
standard
rating,
the synthesizer's
S/N
ratio
will
drop
and
it
will
not
sound
as
clear;
the
synthesizer
modules
may
not
oper-
ate
with
their
normal
stability,
either.
Therefore,
when
you use
the
Sigma
in
a
new
place
and you have any
reason
to
suspect
that
the
AC
voltage
may
not
be
right,
have
it
checked
with
a
reliable
AC
voltmeter
before
turning
on
the
power on
the
Sigma.
When
making
connections,
only
use
standard
phone
plugs
in
the
Sigma's
input
and
output
jacks.
Never
try
to insert
any
other type
of
plug
in
these
jacks.

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