Oberheim Xpander Owner's Manual

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The three
Zones
are
very important because
they
enable
the
Xpander
to play
chords
as
a
six
voice
synthesizer
rather
than as six one-voice
synthesizers.
Zones
operate in
conjunction
with
a
MIDI control source.
There are three
attributes
to
each Zone,
each on
its
own
subpage:
Input
This specifies the
control
source, either one of
the
MIDI
channels (1-16)
or Omni Mode,
which is
alt
MIDI
channels
Limit
This specifies the
range of notes
that
the zone will receive.
The
upper and
lower
limits can
be
programmed
by
holding
the
button under
the
desired Limit and
then
playing a
note on a
MIDI
controller.
Zone limits
can also
be set by
turning the appropriate
control.
The display
shows the
MIDI
note
number.
0-127
(ten octaves).
The accompanying
chart
shows the key-
board equivalent
of each
note number, with
ranges
of
a
piano
and an OB-8
in
comparison.
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Only notes
within
the
ZONE
u* 1 1 1
play
Mode
This
specifies
the process
for assigning voices
Rotate
gives
every new note to
a new
voice, as with an OB-8.
Reassign mode
is similar to
Rotate, except that notes
with the same
pitch get
reassigned
to
the
same voice, as
with
a
Prophet
5
or
Oberheim Modular
4-Voice
Reset is another scheme
from
the
4-Voice:
the first note
played will always
go to the
lowest
number
voice assigned to the
zone. i.e.
Voice
1
The
second note
played
will always go to
the second
voice in the zone. etc.
Uni-High,
Uni-Low, &
Uni-Last are unison
modes
with highest, lowest
or last
note
priority,
respectively
Uni-Low is
the unison mode
of an OB-8
Split*,
Doubles,
and
Triples
Each Zone can have
different
limits,
which
can
be used to
split
a
keyboard or
other control-
ler
into
three independent parts. The
split zones
have
the unique
capability of
being able to
overlap, if
desired
When
zones
overlap, each note
will
be
played
by each
zone,
enabling two
or three
voices
to
sound with each
note
played Also, since
each
zone
interprets the notes
independently, it is
possible
to
have one
zone in unison while
another
zone
plays the same notes
polyphonically.
or a
double on one
half of a
split keyboard, or. .
.
Are you
starting
to realize the
fantasy of this
machine?
At
Xpander
Owners
Manual Puf.hg
l: AH
Together
•
Multi
Patches

Oberheim Xpander Specifications

General

Type	Analog Synthesizer
Polyphony	6 voices
Oscillators	2 VCOs per voice
Control	MIDI
Synthesis Type	Analog Subtractive
VCA	1 per voice
Memory	100 patches
Modulation	Extensive modulation matrix
Year Released	1984
Filters	Multi-mode filter per voice
Envelopes	3 per voice
Keyboard	No keyboard
Inputs	CV/Gate
Outputs	Individual voice outputs