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Oberheim Xpander Owner's Manual

Oberheim Xpander
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Page
Theory
With
an instrument
as
sophisticated as the
Xpander, it
becomes
impractical to
have
an
indi-
vidual control
for every
function
in the synthesizer,
because
the
result would
be too
many
knobs- So
the
Xpander utilizes six sets
of
controls, grouped
into
a
system
of "pages;
to con-
trol its various
functions.
This
way. all
the controls
for
one
section of the
synthesizer
are
accessible at
once in the
Page
Modifier
section of the synthesizer
The name ot the
selected
page
is
always
shown on the
right
side
of
the
Programmer display
PRIMARY
PAGES The functions
of the primary
pages
are
also
shown on the
right side
of the
panel, and can
be
accessed
immediately
by
pressing the
button
associated with
each
section of the
block dia-
gram
There
arc two kinds
of primary
pages:
Single Patch
pages are used to
program
sounds
Within these pages
are the
controls
for ail
the parameters
of individual
sound
programs: the
oscillators,
filter,
envelopes,
modulations
FM.
etc
The
block
diagrams on the
right side
of
the
front panel
show the
controls accessed
from
each
Single
Patch page.
The name of each
page
is printed in
white next to
the page
selec-
tion buttons
All
the functions
accessed
from
Single Patch pages
are
programmed
into
a
Single
Patch
program
Multi Patch
pages control all
six voices
in tandem.
These pages
access
the
functions nec-
essary to
control
all six voices in a
coordinated
manner,
i.e.
the Single
Patch
assigned to
each voice,
the
control source
assigned to
each voice (CV or
MIDI
channel), the
stereo
mix
of the
voices,
etc
Mults Patch pages
are also
chosen
with the buttons
on the
right
side
of
the front
panel
(while
in Multi
Patch mode)
and the names of
the Multi
Patch
pages
appear in grey
next to
each
button. Multi
Patch mode is
selected
with the MULTI
PATCH
button in the
Programmer sec-
tion on the left side
of
the
panel
All
the
functions accessed
from Multi Patch Pages
are
pro-
grammed into a
Multi Patch
program
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13
Xpander Owners
Manual
fairing
ihe Beast

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Oberheim Xpander Specifications

General IconGeneral
TypeAnalog Synthesizer
Polyphony6 voices
Oscillators2 VCOs per voice
ControlMIDI
Synthesis TypeAnalog Subtractive
VCA1 per voice
Memory100 patches
ModulationExtensive modulation matrix
Year Released1984
FiltersMulti-mode filter per voice
Envelopes3 per voice
KeyboardNo keyboard
InputsCV/Gate
OutputsIndividual voice outputs

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