Announcing
The
Split-Eight,
Sequential^
New
8-Voice
Programmable
Synthesizer!
The
Split-Eight
isafully
programmable
eight
voice
synthesizer
featuring
a
full
5-octave
keyboard
and
programmable
keyboard
split
for
$1,195.00
suggested
retail.
And
that's
just
the
beginning!
For
instance,
The
Split-Eight
offersachoiceoffour
keyboard
modes:
Single,
Unison,
DoubleorSplit.InSingle
Mode,
the
same
soundisplayed
across
the
lengthofthe
five-octave
keyboard.
This
provides
the
user
with
eight
full
voices
for
traditional
polyphonic
playing.
Unison
mode
assigns
all
eight
voicestoa
single
note,
creating
a
very
full,
bold
sound
ideal for
lead
synth
playing.
Double
mode
lets
the
user
layer
different
soundsontop
of
each
other.Inthis
way,
two
sounds
are
triggered
by
each
keytocreate
complex
sounds
utilizing
the
full
programming
capabilities
of
two
independent
oscillators,
filters,
and
VGA's
at
one
time.
The
exciting
Split
Modeisparticularly
useful
in
performance,
becauseitlets
the
user
play
different
sounds
at
each
endofthe
keyboard
(suchasplaying
a
bass
sound
with
the
left
hand
andaflute
with
the
right)!
The
split
point
canbeprogrammed.
WheninSplit
Mode,
the
instrument
automatically
assigns
four
voicestoeach
side
of
the
split
point.
The
Split-Eight
also features
a
programmable
link
feature
which
lets
you
callupSplitorDouble
programs
simultaneously.
The
fully
programmable
Split-Eight
comes
with64pre
programmed
sounds,
including
a
variety
of
original
sounds
and
several
impressive
orchestral
and
keyboard
timbres.
All
sounds
can be
easily
modifiedorreplaced
with
custom
sounds.
A
built-in
chorus
provides
programmable
on/off
chorusing.
The
Technical
Stuff
Eachofthe
instrument's
eight
voices
feature
a
multi-
waveform
VCO,a4-pole
lowpass
filter,
a
VCA,
two
ADSR
envelope
generators
andanLFO.
The
Split-Eight
comes
with
64
pre-programmed
sounds.
Creating
custom
soundsiseasy!
Thereisa
graphic
matrix
which
allows
fast
selection
and
easy
editingof31
different
parameters.
LEDs
clearly
indicate
the
selected
program,
and
if
the
programisbeing
edited,
will
also
display
the
parameter
value.
The
back
panel
contains
individual
outputs
for
channels
A
andBalong
witha1/4"
main
output
that
gives
you
the
chorus
mix.
Cassette
In
and
Out,amulti-purpose
footswitch,
and
MIDI
Input
and
Output
are
also
included.
Sequential
supports
the
Split-Eight
withanextensive
array
of
MIDI
functions.
Modes1and3(Omni
and
Poly)
are
available
along
with
the
ability
to
disengage
MIDI.
Each
side
ofasplit
program
maybeassignedtoa
separate
MIDI
channel. This
allows
the
usertocontrol
other
MIDI
keyboards
independently
with
each
sideofthe
keyboard.
Through
MIDI,
the
Split-Eight
can
send
and
receive
program
change
information,
and
transfer
programstoand
from
a
second
Split-Eight.
Other
MIDI
features
include
the
ability
to
receive
and
send
pitch
bend
and
modulation
information.
SPLIT-EIGHT
SPECIFICATIONS
VOICES:
Split-Eight
isaneight-voice
polyphonic
synthesizer.
Each
voice
consists
of:
One
Voltage-Controlled
Oscillator:
Waveshapes
available
are
sawtooth,
triangle,
and
variable
pulse.
Timing:
9-octave
range.
One
Voltage-Controlled
Lowpass
Filter:
24dB/octave
slope.
One
Voltage-Controlled
Oscillator:
Waveshapes
available:
Square
wave,
Rate:
1-33
Hz.
Waveshapes
available:
Triangle,
Rate:
1-12.5
Hz.
IWo
Envelope
Generators
(filter,
amp):
Attack:7milliseconds
-11seconds.
Decay:7milliseconds
-11seconds.
Sustain:
0to10
Volts.
Release: 7
milliseconds
-14seconds.
PROGRAMMABILITT:
31
Parameters
are
available
for
programming.
KEYBOARD:
Five
octave(Cto
C).
Split
Keyboard
range:
2
octaves
(C2toC4).
Link,
Split,
Double.
CHORUS:
Programmable
On/Off.
OUTPUTS:
Audio
Output:
1/4"
phone
jack
(mix).
Separate
audio
outputs
forAandB(4
voicestoeach).
Tape
Out:
For
saving
programstocassette.
One
MIDI:5pin
DIN.
INPUTS:
One
MIDI:5pin
DIN.
Tape
In:
For
loading
programs
from
cassette.
Footswitch
Jack:
1/4"
phone.
MIDI
IMPLEMENTATION:
(partial
list)
MIDI
Modes:
OMNI
Mode.
POLY
Mode
Separate
MIDI
channels
for
each
sideinSplit
Mode.
Channel
Assignment:
Channels01through
16.
Program
Select
Enable/Disable.
Wheel
Enable/Disable.
Program
Send/Receive:
Send1program.
Local
Off:
(for
Channel
B)
Allows
separate
controlofChannelBover
MIDI.
UNIQUE
FEATURES:
1)
Delay:
wheninunison,
the
triggering
of
half
the
voices
canbedelayedby20,
40,or80
milliseconds.
2)
Poly
Mode:
WheninDouble
Mode,
this
assigns
the
entire
audio
outputofprogramBto
the
filter
input
of
programA(replacing
A's
oscillator).
3051
North
First
Street
San
Jose,CA95134
Telex:
4997150
SEQC1R
In
Europe:
Sequential/Europe
P.O.
Box
16,
3640AAMijdrecht
The
Netherlands
Telex:
12721
SQNTL
OPERATION
MANUAL
PREPARATION
TableofContents
PLAYING
Introduction
Tuning
Preset
Mode
Single
Mode
Link
Mode
Split
Mode
Double
Mode
Wheels
and
Footswitch
Programmable
Parameters
3
3
•3
4
4
4
4
5
5
6
PARAMETERS
Editing
and
Programming
Selecting
Parameters
Adjusting
Parameter
Values
Cancelling
Edits
Recording
Edited
Programs
Copying
Programs
Basic
Patch
Performance
Parameters
Glide
Chorus
Unison
Delay
Footswitch
Accent
Footswitch
Sub-program
Synthesizer
Parameters
Oscillator
Group
LFO
Group
Filter
Group
Amplifier
Group
7
7
7
7
7
8
8
8
8
8
8
9
9
9
10
12
Kf
15
17
CASSETTE
INTERFACE
Connections
Save
Verify
Load
19
19
19
19
19
MIDI
Connections
Keyboard
ChannelBLocal
Control
Disable
Channel
Selection
21
21
21
21
21
CM608
A
iii
MIDI
Disable
MIDI
Enable
MIDI
Expand
Mode
#1
Mode1Select
02
Dump
Programs
03
Mode3Select
05
Enable/Disable
Program Changes
06
Enable/Disable
Wheel
Changes
Program
DumpbyMIDI
Request
TunebyMIDI
Request
MIDI
Specification
Transmitted
Recognized
21
22
22
22
22
22
22
22
22
23
23
23
23
CM608A
PREPARATION
WARNING!
Switch
power
off to
all
equipmentinuse
before
connectingordisconnecting
anything.
1.
Connect
audio
outputs.
Foramonophonic
system,
use
MIX
OUTPUT.
This
signal
contains
both
theAandBchannels,
plus
the
chorus.
Note:
The
built-in
chorusisonly
availableatthis
output.
Forastereoormixer-input
system,
use the
separateAand
B
OUTPUTS.
This
willbemost
useful
when
the
keyboardisin
Split
or
Double
mode.InSplit
mode,
ChannelAcomes
from
the
right
side
of
the
keyboard
and
ChannelBcomes
from
the
left.InDouble
mode,
playing
anywhereonthe
keyboard
plays
both
channels
simultaneously.
2.Ifdesired,
connect
optional
footswitchtoCASS/FTSW
IN.
Use
Sequential
Model
839orequivalent
(momentary-type,
normally
open).
The
footswitch
control
functions
are
explained
below,
under
Performance
Parameters.
3.
For
cassette
interface
connections
see
Cassette
Interface
section
(below).
4.
For
MIDI
connections,
see
the
MIDI
section
(below).
CAUTION!
Before
proceeding,
check
that the
power
switchisset
to
OFF.
5.
Connect
power
cabletoa
properly-grounded
power
line.
6.
Switch
power
on.
Normal
indications
are that
the
right
display
counts
from
"1"
to
"8",
indicating
which
voiceistuning
up.
When
this
ends,
Preset
lights,
and
program11is
automatically
selected.
If
youdonot
obtain
these
visual
indications,
check
your
power
source
first,
then
the
fuse
(1/2A,
slo-blo).
CM608A
CAUTION!Topreventaloud pop,
when
switching
Split-Eight
power
off,
switch
off
amplifier
power
first.
Also,toprotect
the
memory,
use
the
power
switchonthe
backofthe
Split-Eight
(rather
than
unplugging
it).
7.
Adjust
VolumeAand
B.
CAUTION!Toprotect
ears
and
speakers,
before
playing,
reduce
both
VolumeAandBto
minimum.
.Then
play
the
keyboard
and
increase
both
volumes
gradually.
Note:
The
volume
controls
are
also
usedtobalance
the
channels,
so
you
will
often
wanttoadjust
them
simultaneously.
(For
best
signal-to-noise
ratio,
raise
theAandBVolumes
while
lowering
the
amplifier
gain.)
8.
Check
that
the
Pitch
wheeliscentered.
Always
start
with
this
wheel
centeredinits
"detent."
From
this
positionitis
possibletobend
pitch
upwardsordownwardsbyas
much
asamajor
3rd.
9.
Check
that
the
Mod
wheelisfully
down
(towards
you).
Start
withaminimumofmodulation.Toincrease
modulation,
move
the
wheel
forward.
The
effectofthis
depends
upon
the
selected
program.
10.
Center
Master
Tune.Oradjustasneededtotune
the
Split-Eight
toapiano,
for
example.
CM608A
PLAYING
INTRODUCTION
At
this
point,
power
has
been
switchedonand
the
wheels,
Master
Tune
and
Volume
knobs
have
been
positioned
correctly
(see
"PREPARATION11).
Only
the
Preset switchison.
Basically,
playing
the
Split-Eight
isamatter
of:
1
Selecting
the
keyboard
mode:
Single,
Split,orDouble.
2.
Selectin!
the
desired
program
(Single
mode)orprograms
(Split
or
3.°PUying°th^
keyboard
and
using
the
wheels
for
expression.
This
section
covers
these
activities.
The
Split-Eight
comes
pre-programmed
with 64
r*^*""*
Drofcrams.
These
represent
a wide
rangeofuseful
instruments
and
Ks?The
sound
programs
stayinmemory
even
when
power
is
switched
off.
After
familiarizing
yourself
with
the
Split-Eight
and
its
factory
mmmsTtry
creating
your
own
sound
programs
by
studying
the
PARAMETERS
section.
TUNING
Before
olavin*
however,
you
mustbeaware
that
the
Split-Eight
uses
££
oPs1^tors
which
driftinresponse
to
changing
temperature
So
UwMsound
outoftune
foralittle
whileasit
warms-up™*W£
Einht
also
includesanautomatic
tuning
system
which
retunes
the
osHllatofs
wnenThl
Split-Eight
is
not
being
played
(but
powerisstill
on!)
If
the
Split-Eight
is
tuningavoice while
you
wanttoplay,
thisisno
it
retunes:
Hold
down
Record
(which
will
blink)
and
press
the
OSC
Parameter
Group
switch.
This
starts
tuningofaU
voices,
with
the
display
indicating
asitdid
when
power
was
switched
on.
Note:
Tuning,
whether
automaticormanual,
does
not
alter-any
control or
paramfler
settings,
butifplaying
with
other
instruments,
you
may
needtoslightly
readjust
Master
Tuneasthe
Split-Eight
warms
up.
PRESET
MODE
When
the
Preset
switch
is lit,
the
numberinthe
displayisthat of the
current
soimd
program.
Program11is
selected
automat.cally
on
»wer-up?To
select
another
program,
enter
the
desired
number
usmg
the
PROGRAM
SELECT
switches
(1-8).
When
the
Preset
switchisoff,
the
Split-Eight
isinEdit
mode.
Edit
mode
allows
youtoreprogram
the
parameters
to
suit
your
taste.
(For
more
information
on
editing,
see the
PARAMETERS
section.)
SINGLE
MODE
When
the
Split
and
Double
LEDs
are
both
off,
the
Split-Eight
is
in
LINK
MODE
When
Linkisoff,
keyboard
modeisonly
controlled
with
the
Split
and
Double
switches.
Channel
B.
SPLIT
MODE
When
Splitison,
the four
ChannelAvoices
play
from
the
right side
fthkeyboard
while
the
four
ChannelBvoices
play
from
the
left
of
the
,
the four
ChannelApy
while
the
four
ChannelBvoices
play
f
mode
you
select the
same
program
number
for
both
channels,
this
is
essentially
the
sameasSingle
mode.)
within
the
second
and
third
octaves.
^iKStfK
control
pane.
will
blink),
and
press
the
key
whichistobethe
lowest
keyonthe
right
side.
CM608A
CM60SA
J
To
Link
ChannelBand
the
split
pointtoChannel
A:
1.
With
Split
on,
but
Link
off,
select the
desired
programs.
2.
Set
the
split
pointasabove.
3.
Switch
Link
on.
k.
Switch
Record
on.
(This
will
clear
any
edits
currently
made
to
the
ChannelBprogram,
andifChannelBwas
selected,
will
also
switch
backtoChannelA.Any
editsinChannelAare
not
lost.)
5.
Enter
two
digits
for
desired
destination
programinChannel
A.
6.
Record
mode
will
switch
off
automatically.
DOUBLE
MODE
When
Double
modeison,
the
four
voices
eachinChannelsAand
B
playinparallel.Inother
words
each
key
plays
one
voice
from
both
channels.
(Since
there
are
four
voices
per
channel,
you
can
play
a
maximumoffour
keys.)
IfinDouble
mode
you
select
the
same
program
for
both
channels,
then
two
voices
with
the
same
sound
are
asignedtoone
key.
This
thickens
the
sound
but
does
not
change
the
timbre.
To
linkaspecific
ChannelBprogramtoChannelAselections
1.
With
Doubleonbut
Link
off,
select
desired
programs.
2.
Switch
Link
on.
3.
Switch
Record
on.
(If
ChannelBwas
selected,
ChannelAwill
be
selected
automatically.)
k.
Enter
two
digits
for
desired
destination
programinChannel
A.
5.
Record
goes
off.
WHEELS
AND
FOOTSWITCH
The
wheels
are
monophonic,
that
is,
they
affect
all
voicestothe
same
degree.
The
effectofthe
Pitch
wheelisalways
the
same.
The
effectofthe
Mod
(modulation)
wheel
dependsonthe
selected
program.
When
they
are
notinuse,besuretoreturn
themtotheir
rest
positions.
In
Split
modeitis
usefultobe
abletodisable
the
effectofthe
wheelsoneither
side.Toswitch
the
wheelsonand
off:
1.
Select
desired
channel.
2.
Hold
down
Record,
and
press
the
LFO
Parameter
Group
switch.
The
effectofthe
footswitchisprogrammed.
For
more
information,
continue
reading.
CM608A
PROGRAMMABLE
PARAMETERS
While
playing
with
the
factory
programs,
you
may
have
noticed
the
responseofthe
keyboard,
wheels,
and
footswitch
changing.
This
is
becausebyselectingaprogram
you
indirectly
control
over
thirty
parameters
which
define
the
performance
controlsaswellasthe
sound
producedbythe
synthesizer
voices.
For example,
you
may
have
noticed
that
some
programs
assign
all
vojcestothe
lowest
key
played.
Thisisthe
Unison
parameter.
Also,
the
glide
parameter
determines
whether
the
keyboard
plays
discrete
pitchesorslews
the
notes.
The
program,
mayormay
not
cause
the
footswitchtoprovideanaccent,ortemporarily
changetoa
"sub
program.*1
The
program
may
switchonthe
chorus,orPoly-Mod
(which
cuts-off
the
ChannelBaudio
output).
Allofthe
programmable
parameters
are
explainedinthe
next
section.
CM608A
PARAMETERS
EDITING
AND
PROGRAMMING
Note:
Before
editing
programsitmaybea
good
ideatosave
the
factory
programs
using
the
cassette
interface.
To
adjust
(edit)
program
parameters,
first
switch
Preset
off.
(If
Link
was
on,itwill
also
switch
off.)
Selecting
Parameters
There
are30program
parameters
arrangedina
k x8matrix.
(Selection
032isthe
MIDI
Channel,
and
one
locationisunused.)
In
either
order,
select
the
row
using
the
Parameter
Group
switches,
and
select
the
column
using
the
PROGRAM
SELECT
switches.
For
example,ifthe
FILTER
Parameter
Group
switchislit
and
PROGRAM
SELECT5is
lit,
then
the
Filter
Decay
parameter
is
selected.
Adjusting
Parameter
Values
When
Presetisoff,
the
numberinthe
displayisthe
valueotthe
parameter
whichiscurrently
selected
(by
the
parameter
matrix
switches).Toadjust the
parameter
value,
turn
the
Parameter
Value
knob.
Note:
The
Filter
Cutoff
parameter
rangesto127,
but
the
display
only
shows
two
digits.
Therefore
when
adjusting
this
parameter
above
99
(100to127),
the1is
not
displayed.
Cancelling
Edits:
. .
to
cancel
all
edit
changes
and
restore the
original
program,
switch
Presetonand
re-select
the
program.
Recording
Edited
Programs
After
editing
a programasdesired,
1.
Switch
Preset
on.
2.
Switch
Record
on.Itblinks.
3.
Enter
two
digits
for
the
desired
program
destination.
The
control
panel
stops
blinking,
'indicating
recordingiscompleted.
Note:Ifyou
madeanerror
with your
first
digit
entry,
you
can
switch
Record
offtoabort.
But
when
you
press
the
second
digit,
the
edited
programisrecordedinthat location (and
erases
the
previous
program).
CM60SA
Copying
Programs
.
To
copyaprogram,
select
the
desired
program,
switch
Record
on,
then
select the
desired
destination.
Asastarting
point
for
creating
new
sounds
it is
often
helpfultoclear
all
program
parameterstothe
minimum
requiredtoproduceatone.
This
canbedone
easilybyholding
down
Record
and
pressing
PROGRAM
SELECT1.This
sets
all
parametersto00,
except
as
follows:
Coarse:
2^
Sawtooth
wave:1(on)
Cutoff:
127
KBD
Track:2(full)
Amp
Sustain:
15
Voice
Volume:
15
If
desired,
this
basic
patch
canberecordedasa
program
from
which
many
editing*departures
canbemade.
PERFORMANCE
PARAMETERS
Glide
Sy£2!l?!fc«
the
Keyboard.
As
the
glide
value
increases
the
voicesdonot
step
instantly
between
pitches,
nstead,
they
begm
to
slew.
The
effect
canbemade
subtleorquite
extreme.
When
Unisonisoff,
polyphonic
glide
results,
whichisnot
easytopreset,
but
can
makeaninteresting
effect.
Chorus
^SSSfi^U^
rate
and
depth.
Itisprogrammed
onoroff
If
in
SplitorDouble
modes, and
one
channel
programs
the
chorus
on,
this
will
overide
the
other
channel
programmingitoff.
Unison
^X™«~<
that
some
factory
programs
only
allow
you
to
olav
one
noteata
time.
Thisisbecause
the
Unison
parameter
s
programmed
on?
When
Unison
is
on,
all
eight
voices
(or
four
vo.ces
,1
uTspTlt
or
Double
modes),
are played
onlybythe
lowest
key.
Thw
monophonic,
rather
than
polyphonic,
voice
ass.gnment
is
used
to
produce a
richer
sound.
In
addition,
if
Unisonison,
the
keyboard
changes
from
m"»tiple-
tri«ertosingle-trigger
mode.Inthis
mode
the
"envelope"
wh.ch
sha%s
each
noteisnot
necessarily
triggered
with
each
new
keystroke
CM608A
(as
they
areinmultiple-trigger
mode).
Instead,
the
envelope
is
triggered
only
when
all
previous
keys
have
been
completely
released.
This
allows
youtoselectively
accent
notesbytouch.
Delay
Range:00-03
00s
off
01s20
millisecond
delay
02s40ms
03s80ms
When
Unisonison,
use
this
foraninteresting
flange,
doubling,
or
echo
effect.
Footswitch
Accent
This
parameter
allows
the
footswitchtotemporarily
change
the
settingofoneofthe
following
parameters:
Glide
Filter
Cutoff
Filter
Amount
Filter
Attack
Voice
Volume
Amplifier
Decay
Amplifier
Release
To
program
the
footswitch:
1.
Switch
Preset
off.
2.
Hold
down
Record
and
press
PROGRAM
SELECT2.The
control
panel
blinks,
and
the
Glide
parameterisselected.
3.Toselect
other
parameters,
press
the
footswitch.
4.
When
the
desired
accent
parameter
has
been
selected,
press
Record
again.
(It
stops
blinking.)
5.
While
holding.the
footswitch,
adjust
the
Value
knob
for
the
desired
accent
toneoreffect.
When
you
release
the
footswitch,
the
displayed
parameter
returnstoits
original
programmed
value.
6.
Switch
Preset
on.
7.
Switch
Record
on.Itblinks.
8.
Enter
the
desired
two-digit
program
number.
9.
Pressingonthe
footswitch
temporarily
selects
the
accent
parameter
value.
Footswitch
Sub-program
If
the
accent
featureisnot
usedordesired,
you can
program
the
footswitchtotemporarily
switchtoa
new
program:
1.
Switch
Preset
on.
2.
Hold
down
Record
and
press
PROGRAM
SELECT2.(Blinking
starts.)
3.
Enter
two
digits
for
sub-program
number.
(Blinking
stops.)
4.
Press
the
footswitch.
5.
Pressing
the
footswitch
alternately
selects
the
main
program
and
the
subprogram.
CM608A
SYNTHESIZER
PARAMETERS
This
section
describes
the
Split-Eight's
programmable
voice
parameters.
The
Split-Eight
actually
contains
eight
synthesizers,
termed
"voices."
Figure1diagrams
oneofthese
voicesata
very
general
level.
The
Split-Eight
fits
into
the
traditionofvoltage-controlled
analog
synthesizers.Tounderstand
these
instrumentsithas
proven
useful
to
identify
three
basic
functions:
controllers,
audio
sources,
and
modifiers
(filters
and
amplifiers).
Each
voice
contains
severalofeach
typeoffunction.
Basically,
controllers
provide
the
control
voltages
(CVs)
which
determine
the
pitchofthe
audio
sources, or
the
filtering
or
attenuation
effectsofthe
modifiers.
Controllers
canbemechanical
devices
suchaskeyboards
and
wheels.
For example,astheCVfrom
the
keyboardtothe
oscillator
(audio
source)isincreased,
the
oscillator
frequency
increases.Orcontrollers
canbeelectronic,
such
as
the
LFOorthe
two
envelope
generators.
For
example,asa
rapidly-decreasing
CV
fromanenvelope
generator
sweeps
down
the
the
filter
cutoff
frequency,itimpartsa"pluck"tothe
voice.
Other
controllers
include
The
MASTER
TUNE
knob
and
PITCH
wheel,
which
in
effect
provide
two
CVs
which
control
allofthe
oscillators.
There
are
two
audio
sources:
the
oscillator,
and
the
filter,ifit is
adjusted
for
self-resonance.
The
mixer,
filter
(when
notinself-resonance),
and
amplifier
are
modifiers.
A
more
detailed
examinationofthe
voice
parameters
follows.
CM608A
10
I
in io lj
dog
Figure
1
VOICE
BLOCK DIAGRAM
CM60SA
11
OSCILLATOR
The
oscillatorisan
audio-frequency
source
always
under
control
of
COARSE
and
FINE
FREQUENCY,
the
keyboard,
PITCH
wheel,
and
MASTER
TUNE.
Oscillator
frequency
canbemodulatedbythe
LFO
andbythe
envelope
generator.
PULSE-WIDTH
(PW)
can
also
be
modulatedbythe
LFO.
Ifnowaveshape
parameterison,
the
oscillator
will
havenoaudio
output.Iftwoorthree
waveshapes
are
on,
they
are
mixedatfull
level
and
suppliedasthe
oscillator's
outputtothe
MIXER.
COARSE
FREQUENCY
Value
Range:
00-48
00s
lowest
octave
12=
one
octave up
24=
two
octaves
(middle
C)
36=
three
octaves
48=
four
octaves
Adjusts
oscillator'pitch
in
semitones,
overafour-octave
range.
To
thisisadded
the
four-octave
keyboard,
foratotal
rangeofeight
octaves.
Note
thattokeep
programsintune,
this
parameter
should
normally
be
adjustedtothe
octaves
(00, 12,
24...).
Exact
oscillator-
pitch
shouldbefine-toned
with
MASTER
TUNE,
with
FINE
at a valueof0.
FINE
FREQUENCY
Value
Range:
00-31
32=
one
semitone
Normally
this
parameterissetto0,
while
oscillator
pitchisadjusted
with
MASTER
TUNE.
This
parameter
adjusts
oscillator
frequency
by
uptojust less
thanasemitone.
This
allows
detuningofthe
oscillator,
usually
for
use
onlyinDouble
mode.
SAWTOOTH
WAVE
Value
Range:
00/01
00=
Off
01=
On
Enables
full-level
waveshape
containing
all
harmonics.
This
basic
shapeisoften
describedas"brassy."
CM608A
12
TRIANGLE
WAVE
Value
Range:
00/01
00s
Off
01=
On
Enables
full-level
triangle
wave,
containing
little
harmonic
energy,
thus
havingadull
tone.
PULSE
WAVE
Value
Range:
00/01
00s
Off
01=
On
Enables
full-level
waveshape
whose
harmonic
content,
thus
timbre,
dependsonthe
valueofPULSE
WIDTH
and
LFO
modulation.
If
switching
thisonproducesnosound,
try
adjusting
Pulse
Widthtoa
value
between2and
60.
Note:Ifall
three
waveshapes
are
on,
and
the
filteriswell
open,
some
distortion
may
occur
when
several
keys
are
played
simultaneously.
If
this
occurs,
compensatebysimply
reducing
VOICE
VOLUME.
PULSE
WIDTH
Value
Range:
00-63
0U
1%
15=
25%
31=
square
wave
47=
75%
63=
99%
Adjusts
the
harmonic
contentofthe
pulse
wavebyvarying
its
duty
cycle
from
approximately
1to99%.Atthe
extreme
parameter
values
(00-02
and
60-63)
the
pulses
maybebarely
audible.A50%
duty-cycle
pulse
(having
only
odd
harmonics),
also
calledasquare
wave,
can
be
selected
(approximately
value
31).
This
parameterisonly
effectiveifPULSEison.
This
parameter
has
no
effectonthe
sawtoothortriangle
waves.
POLY-MOD
Value
Range:
00-15
In
Double
Mode,
the
OutputofChannelBis
appliedtothe
external
signal
inputofthe
ChannelAfilters.
ChannelAoscillator
output
is
switchedtoexternally-modulate
these
filters,
Thus,
Channel
A
modulates
ChannelB.ChannelBand
the
ChannelAVCO
output
is
disabled.Ofcourse,
thereisa
four-voice
limit.
Note
thatifvalue
rangeisset
very
low,
this
will
activate
the
patch
switching
arrangement
(disabling
Channel
B),
but
provide
little
effect.
CM608A
13
LFO
"Modulation"
referstoa
periodicorconsistent
(as
opposed
to
accidental)
aural
change whichisinterestingormusically
useful.
Modulationiscreatedbyelectronic
controllers
whenitis
not
possible
to
adjustamechanical
controller
with
the
required
speed
or
precision.
Modulation
systems
thus
free
the
hands
for
playing
the
keyboard.
Modulation
involvesasignal-generating
source
andamodulated
destination.
LFO-MOD
hasalow-frequency
oscillator
(LFO)asa
source,
but
has
three
selectable
destinations.
The
LFO
frequency,
waveshape,
and
basic
output
level
are
adjustedbythree
parameters.
To
this
modulation
level
willbeadded any
contributionofthe
MOD-
wheel.
Total
modulationisappliedbythe
LFO
switchestothree
destinations.
FREQUENCY
Value
Range:
00-15
Adjusts
LFO
frequency
from
aboutKto20Hz.
PROGRAMMED
AMOUNT
Value
Range:
00-31
Programs
modulation
depth
independently
from
the
MOD
wheel.
TRIANGLE/SQUARE
WAVE
SHAPE
Value
Range:
00/01
00=T
dangle
OUSquare
Selectsatriangle
wave
for
vibrato,ora
square
wave
for
trills.
OSCILLATOR
MODULATION
Value
Range:
00/01
00=
Off
01=
On
This
enables
LFO
modulationtothe
oscillator
frequency,
according
to
the
level
setbyLFO
AMOUNT
and
the
MOD
wheel.
This
produces
a
vibratoortrill,
accordingtothe
valueofLFO
SHAPE.
PULSE-WIDTH
LFO-MODULATION
Value
Range:
00/01
00=
Off
01=
On
Applies
LFO-modulationtooscillator
pulse
width.
CM608A
FILTER
MODBYLFO
Value
Ranges
00/01
00=
Off
OUOn
This
parameter
switches
LFO-modulationtothe
filter,
which
normally
produces
a vibrato
effect.
FILTER
The
FILTER
section
contains
parametersofthe
filter itself
andofits
ADSR
envelope
generator.
CUTOFF
FREQUENCY
Value
Range:
00-127
(The
"hundreds"
digitisnot
displayed.
For
example,
value
127
is
displayedas27.)
Adjusts
cutoff
frequencyofthe24dD/octave
(4-pole)
low-pass
filter.
This
parameterisrather
likeatone
control.
"Cutoff"isthe
frequency
below
which
all
elementsofthe
mixer's
output
signal
are
let
through.
The
higher-frequency
componentsofthe
input
signal
(that
is,
all
those
above
the
cutoff
frequency)
are
suppressed.
The
higher
the
parameter
value,
the
higher
the
frequencies
are
which
pass
through
the
filter.
Thus,
the
"brighter"
the
sound.
In
additiontothis
parameter,
overall
cutoff
frequencyisthe
result
of
all
the
filter
modulation
parameters.
RESONANCE
Value
Range:
00-31
26s
approximate
oscillation
point
(may
varybyvoice)
Adjusts
the
amountoffilter
resonance.Asthe
valueisincreased
from0,the
amountofresonance
("emphasis,"
"regeneration,"
or
"Q")
appliedtothose
signal
componentsatthe
cutoff
frequency
will
increase.Asresonance
increases,
frequencies
lower
than
the
cutoff
will
become
decreasingly
audibleincomparison
with
those
nearer
the
cutoff.Asthe
parameter
valueisincreased,
the
filter
breaks
into
oscillation,
acting
likeasine-wave
audio
source
whose
pitch
is
determinedbyCUTOFF
FREQUENCY
(and
the
various
filter
modulation
sources).
.
:
ENVELOPE
AMOUNT
Value
Range:
00-15
00snoenvelope
modulation
The
filter
cutoff
maybevaried
over
timebythe
filter
envelope
generator.
This
parameter
adjusts
the
depthoffilter
envelope
modulation.
Each
voice
contains
two
independent
ADSR
envelope
generators:
one
controls
filter
cutoff
frequency,
and
one
controls
the
amplifier
gain.
The
following
commentsonthe
ADSR
envelope
generators
are
valid
for
both.
An
"envelope"
changes
value
over
timeata
rate
adjustedbythe
ATTACK,
DECAY,
and
RELEASE
parameters.Asthe
envelopes
are
generated
with
each
keystroke,
they
"contour"
the
voice
intonation,
timbre,
and
dynamics,
animating
the
otherwise
raw
waveshapes
which
come
from
the
mixer.
The
contour
patternisinitiated
whenakeyisstruck.
This
"triggers"
the
envelope
generator(s)toproceed
through
their
attack
and
decay
periods.
These
periods
can
each
range
from
zerotoabout11seconds.
The
envelope
voltage
risestoits
full
value,
then
falls
(decays)tothe
level
setbythe
sustain
parameter,
whereitremains
until
the
key
is
released.
When
the
keyisreleased,
the
gate
goes
off
and
the
envelope
voltage
dropstozeroata
rate
setbythe
release
parameter.
ATTACK
Value
Range:
00-15
8=1second
15sUseconds
Adjusts
the
lengthoftime
for
the
envelopetogo
from
zero
level
(when
keyisinitially
depressed)tomaximum
level.
DECAY
Value
Range:
00-15
8s1second
I5s11seconds
Adjusts
the
lengthoftime
for
the
envelopetogo
from
maximum
leveltosustain
level.Ifsustainissetatmaximum
then
the
decay
parameter
valueisirrelevant,
because
levelisalready
maximum.
SUSTAIN
Value
Range:
00-15
Adjusts
the
sustain
level
from
zerotomaximum.
Thisisa
level
control,
not a
time
control.
Sustain
timeisthe
period
between
the
endofthe
decay
period
and
the
beginningofthe
release
period.
This
is
the
lengthoftime
the
keyisheld
after
attack
and
decay.
CM608A
15
CM608A
16
RELEASE
Value
Range:
00-15
Adjusts
the
lengthoftime
for
the
envelopetogo
from
sustain
level
to
zero.Ifthe
keyisreleased
before
the
attackordecay
periods
have
elapsed,
release
controls
the
time
taken
for
the
envelopetodrop
to
zero
from
whatever
its
level
when
the
key
was
released.Ifthe
attack
and
decay
periods
have
elapsed
and
sustainissetto0,
then
the
release
valueisirrelevant,
because
the
levelisalready
minimum.
If
filter
release
producesnoeffect,
check
that
AMPLIFIER
RELEASE
is
settoapproximately
the
same
value.
KEYBOARD
TRACK
Value
Range:
00-02
00= Off
01=
Half
02s
Full
When
Full,
the
KEYBOARD
control
voltage
(CV)isappliedtothe
filter's
cutoff
frequency
justasitisnormally
appliedtothe
oscillator.
With
the
filter
thus
"tracking"
the
keyboard,
cutoff
frequencyismaintainedata
constant
point
relative to
the
notes
being
played.
This
resultsina
consistencyoftimbre
over.the
whole
keyboard
range.
When
KEYBOARDisoff,
notes
played
higheronthe
keyboard
will
have
haveaduller
timbre.
Obviously,
the
1/2
value
selects
the
midrange
between
these
two
effects.
If
FILTER
RESONANCEisset
for
self-oscillation,
setting
KEYBOARDonFull
will
allow
the
filtertobe played
from
the
keyboard.
However,
since
the
filtersinresonance
are
not
precisely
tuned,
there
willbeconsiderable
error
from
the
normal
keyboard
scale.
(Unlessacomplex
effectisdesired,
ENVELOPE
AMOUNT
will
in
this
case
normallybesetto0,tomaintainasteady
frequency
from
voicetovoice).
If
the
KEYBOARD
parameteristoggled
while
holding
keys
down,
the
effect
will
notbeheard
until
the
keyisrestruck.
AMPLIFIER
VOICE
VOLUME
Value
Range:
00-15
15=
maximum
signal-to-noise
ratio
Programmable
voice
volumeisa
convenient
waytobalance
the
loudnessofprogramssoyou
aren't
always
fiddling
with
the
Volume
knobs.
Useitafter
the
programisbasically
recorded.
The
remaining
amplifier
controls
are
the
envelope
generator
attack,
decay,
sustain,
and
release
parameters,
which
shape
the
envelope
CM608A
17
appliedtothe
VCA.
These
are
identicaltothe
corresponding
filter
envelope
parameters.
Unless
the
sustain
parameteristurnedupslightly,
nothing
will
be
heard
after the
attack
and decay
periods
have
elapsed.
CM608A
18
CASSETTE
INTERFACE
Use
the
cassette
interfacetoprovide
long-term
storage
for
your
programs.
Note:Itis
recommended
that
portable
recorders
equipped
with
automatic
level
control
(AIX)beused
with
this
interface.
Connections
1.Ifnecessary,
disconnect
footswitch
from
CASS/FTSWINjack.
2.
Connect
EAR
outputoftape
recordertoCASS/FTSWINjack.
3.
Connect
CASS
OUT
jacktoMIC
inputoftape
recorder.
Save
1-
Start
recorder
(in
Record
mode).
2.
Wait
for
the
tape
leadertopass.
3.
Hold
down
Record
and
press
PROGRAM
SELECT
6.
4.
When
pilot
tone
appears,
adjust
levelto0dB(if
not
using
ALC).
5.
While
the
Split-Eight
is
saving,
only
this
switch
remains
lit.
6.
After
less
than
one
minute,
PROGRAM
SELECT7blinks
to
indicate that
verification
shouldbedone.
7.
Stop
the
recorder.
Verify
1.
Rewindtothe
start
of the recording.
2.
PROGRAM
SELECT7is
still
blinking.
3.
Adjust
playback
leveltoapproximately
50%offull
level.
4.
Start
the
recorder
(in
play
mode).
5.
Just
after
you
hear
the
pilot
tone,
press
PROGRAM
SELECT7.It
should
stop
blinking
and
light
steadily.
6.
When
the
LED
goes
out,
the
recording
has
been
verified.
7.Ifthe
LED
instead
blinks,
there
has
beenaverification
error.Itis
possible
that
the
tapeisnot
recorded
correctly
but
more
likely
that
recorder
output
levelisnot
settomatch
the
interface.Itsometimes
takesafew
triestofind
the
correct
levels
for
your
specific
recorder.
Ifacassette
will
not
verify
(or
load)
with
several
different
levels,
try
a
new
cassetteordifferent
recorder.
Load
Note;
Loading
erases
the
current
contentsofmemory.
Therefore,
before
proceeding,
make
sure
that
you
have
already
saved important
programs.
1.
Set
recorder
output
levelasfor
verification
(above).
2.
Start
recorderinplayback.
CM608A
19
3.
When
the
pilot
tone
appears,
hold
down
Record
and
press
PROGRAM
SELECT
7.
it.
While
the
cassetteisloading,
only
PROGRAM
SELECT7will
be
lit.
5.
When
the
LED
goes
out
and
the
Split-Eight
enters
its
tune
routine,
stop
the
recorder.
The
cassette
has loaded
successfully.
6.Ifinstead
the
LED
blinks,aload
error
has
occured. Adjust
recorder
level
and
try
again.
CM608A
MIDI
it^Toiten
besttofirst
switch
power
off
between
both
units,
so
that
they
are
correctly
initialized.
When
using
the
Split-Eight
asamaster,
its
MIDI
OUT
goestothe
MIDIINof
the
slave.
When
usingitasaslave,
connect
the
master's
MIDI
OUTtothe
Split-
g's
MIDI
IN.
Tor^w«
the
effectofdisable,
hold
down
Record
and
press
PROGRAM/SELECT
<f.
riT£Sp!.t-Eights
M.D.
.unctions
are se.ected
in
M.D.
EXPAND
mode.Toactivate
ttus
modes
Hold
down
Record,
and
press
PROGRAM
SELECT5.This
will
cause
all
PROGRAM
SELECTStoblink.
Pressing
oneolthe
PROGRAM
SELECTS
determines
the
function,
as
follows:
WheM
recognized.
is
switched
on,
keyboard
information
is
transmitted
and
ChannelBLocal
Control
Disable
Itispossibletoswitch
ChannelBso
that
it is
not
controlled
from
the
bd
but
onlybyMIDI
IN.
Thisishandy
for
live
playback
using
,
whileanexternal
sequencer
playsadifferent
program.
To
switch
ChannelBlocal
control
off,
set
the
split
pointtothe
lowest
key
(CO).
This
assigns
the
entire
keyboardtoChannel
A.
ChannelBonly
plays
from
MIDI.
When
this
modeisselected,itmay
alsobeuseful
to.disable^
the
wheelsinChannelB.(To
disable
wheel,
select
ChannelB,hold
down
Record
and
press
the
LFO
Parameter
Group
switch.)
Channel
Selection
.
c;««u
When
powerIsswitched
on,
the
channel
numberissetto1. If
5mgle
or
Double
moteison,itplays
notes
receivedinChannelI.By
selecting
ChannelAorB,MIDI
channels
canbeindividually
set
for
Split-Eight
ChannelsAand
B.
If
Split
modeison,
and
Mode3is
selected,
notes
receivedinMIDI
Channel1willgoto
Split-Eight
ChannelA(default),
^andnoes
receivedinMIDI
Channel5willgoto
Split-Eight
ChannelB(default).
The
channel
numbers
canbechanged
freely.
To
change
the
channel:
1.
Switch
Preset
off.
2.
Select
the
MIDI
Channel
parameter
using
the
AMPLIFItK
Paramter
Group
switch
and
PROGRAM
SELECT
8.
3.
Adjust
Value
knob
for
desired
channel.
MUM
^enabled
on
power
up.Toswitch
off
MIDI
transmit
and
receive,
hold
down
Record,
and
press
PROGRAM
SELECT
3.
CM60SA
21
#l
Then
JweVis
switched
on,
the
modeissetto1
(Onnni
On/Mono
Off)InM^de.1
the
Split-Eight
recognizes
ail
MIDI
channels.
This
function reverses
the
effectof#3.
In
Mode1,if
Splitisselected,
MIDIINwill
actasif
Double
mode
were
selected.
^h?sCrm^»ars%rs!aves
proems
with
thattfthe
master's.
(To
hear
the
new
programsonthe
slave,you
™*t
«£c
them.)
While
the
programs
are
being
transmitted,
PROGRAM/SELECT2remains
lit.
°£
IZtet
the
Split-Eight
listens
to
data
onlyinthe
selected
channlTfn
?plit
mo'de,
Channels
Aand
E.operate^ssent*£
as
independent
synthesizers,
transm.tt.ng
all
notes
°ut
tl£1seIeCtea
channel
and
playing
all
notes
receivedinthe
selected
channel.
are
disabled
(both
receive
and
"5 En
transmit).
//6
Enable/Disable
Wheel
Changes
On
power-up,
wheel
changes
are
disabled.
Program
DumpbyMIDI
Request
Use
for
backuptoexternal
MIDI
equipment.
CM608A
22
TunebySystem
Request
Continuous
MIDI
activity
may
prevent
the
Split-Eight
from
auto-
tuning.
Thereforeitshould
receive
tune
commands
from
the
system.
You
can
also
tune
manually.
MIDI
SPECIFICATION
Transmitted
Note
On
Note
Off
Mod
Wheel
Amount,ifenabled,
and
only
when
changed
Program
Change,ifenabled
Pitch
Wheel
Change,
ENH.
Wheel
Center:LS=0,MS=6'*.Ifenabled,
and
only
when
changed.
Omni
Off,
BNH
System
Exclusive
FOH,
01H
(SEQ
ID),
ODH
(608
ID),
prog
data,
F7H
Program
data.
15-bytesofdata
transmitted
as 30
four-bit
nibbles,
Is
nibble
first.
See
bit
map..
v
Recognized
Note
On.
Does
not
recognize
velocity.
Note
Off
Mod
Wheel
Amount,ifenabled,isaddedtothe
current
Mod
wheel
setting.
Program
Change,
CNH.Ifenabled.
Pitch
Wheel
Change,
ENH.
Wheel
Center:LS=0,MS=64.Ifenabled.
Tune
Request,
F6.
Omni
Off,
BNH
System
Exclusive
Program
dump
request.
Program
dump.
15-bytesofdata
transmittedas30
four-bit
nibbles,
Is
nibble
first.
See
bit
map.
discussed
WHAT»NOT
COVCTCD
OATE
PURCHASED--
PURCHASEDFROM-
22»
27-36
C*w»
TVrfOFMJSttMl:
.1'
2r
:s
:i
RockoR48oI
MM.***oO*oo°S
C««f
-^
I
BBSSS5BS3B3SS9*S3
the
original
purchase
recenttoobtain
warranty
performance,
unless
appoca
bie
laws
state
otherwise.
Sift:
UCTS
WOULD
TOO
LKt»aTOCPKATt?
unMmey
You
must
pay
all
H
you
desireaft*ynnsured
**™«EZ™*
Anyfctfiledwarrantlea.lni
a
particular
purpose,
are
t
BBBBSfflSHSwesS
CM608A
23
October,
1984
1111
NO
POSTAGE
NECESSARY
UNITEOTSTATES
BUSINESS
REPLY
CARD
FIRST
CLASS
PERMIT
NO.
6W7
3ANJO3CCA
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