Roland JX-8P User manual

Radio and television Interference
"Warning -This equipment has been verified to comply with the limits for aClass Bcomputing device,
pursuant to Subpart J, of Part 15, of FCC rules. Operation with non-certified or non-verified equipment
is likely to result in interference to radio and TV reception." ^^^ _^
The equipment described in this manual generates and
uses radio-frequency energy. If it is not installed and used
properly, that is, in strict accordance with our instructions,
it may cause interference with radio and television receo-
tion.
This equipment has been tested and found to comply with
the limits for aClass Bcomputing device in accordance
with the specifications in Subpart J, of Part 15, of FCC
Rules. These rules are designed to provide reasonable pro-
tection against such an interference in aresidential installa-
tion.
However, there is no guarantee that the interference will
not occur in aparticular installation. If this equipment does
cause interference to radio or television reception, which
can be determined by turning the equipment on and off,
the user is encouraged to try to correct the interference
by the following measure:
•Disconnect other devices and their input/output cables
one at time. If the interference stops, it is caused by
either the other device or its I/O cable.
These devices usually require Roland designated shielded
I/O cables. For Roland devices, you can obtain the proper
shielded cable from your dealer. For non Roland devices,
contact the manufacturer or dealer for assistance.
If your equipment does cause interference to radio or
television reception, you can try to correct the interference
by using one or more of the following measures:
•Turn the TV or radio antenna until the interference stops.
•Move the equipment to one side or the other of the TV
or radio.
•Move the equipment father away from the TV or radio.
•Plug the equipment into an outlet that is on adifferent
circuit than the TV or radio. (That is, make certain the
equipment and the radio or television set are on circuits
controlled by different circuit breakers or fuses.)
•Consider installing arooftop television antenna with
coaxial cable lead-in between the antenna and TV.
If necessary, you should consult your dealer or an ex-
perienced radio/television technician for additional sugges-
tions. You may find helpuf the following booklet prepared
by the Federal Communications Commission:
"How to
Problems"
Identify and Resolve Radio-TV Interference
This booklet is avilable from the U.S. Government Printing
Office, Washington, D.C, 20402, Stock No. 004-000-
00345-4.
CONTENTS
H! Panel Description 3
Connection "
Operation '
1
.
PLAY, EDIT and WRITE 1
2. PLAY MODE '^
A. Selecting aTone Color 8
B.Performance Control Section 8
1
)
Pitch Bender/LFO Lever 8
2) After Touch 8
3) Portamento 9
4) Key Mode Select 9
C. Patch Chain 10
3. EDIT MODE "'I
A.Editing without Programmer 11
B.Editing using Programmer PG-800 •12
C.Parameter Table ^^
D.Naming 20
4. WRITE MODE 21
A.Writing Operation 21
B. Copying 21
C.Editing Patch Chain 22
5. MEMORY CARTRIDGE 23
A.Saving and Loading 23
6. OTHER FUNCTIONS 24
A.Master Tune 24
B. Selecting MIDI Function 24
C.Error Indication 26
]Specifications/Options 27
Please read the separate volume "MIDI", before reading this owners manual.

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FEATURES
The Roland JX-8P is a6voice programmable syn-
thesizer with Dynamics and After Touch functions.
Its memory retains as many as 96 patch programs;
64 preset tone colors which are non-volatile and 32
in its internal memory which are freely pro-
grammable.
•The optional Memory Cartridge (IVI-1 6C), can ex-
pand the JX-8P's memory capacity by 32 programs.
•The JX-8P's Edit function allows you to alter any
of the tone colors in it to your taste. The optional
PG-800 can be used for faster and easier editing
operation.
•The JX-8P allows you to put aname to each tone
color using up to 10 letters before saving it.
•The name of the tone color or parameter current-
ly in use is shown in the Display Window.
•The Patch Chain function is effectively used
specially during live performance, allowing you to call
up to 8patch programs one after another in the order
you have set.
•Incorporated with MIDI, the JX-8P can be set up
with other MIDI devices.
IMPORTANT NOTES
POWER SUPPLY
•The appropriate power supply for this unit is
shown on its name plate. Please make sure that
the line voltage in your country meets that.
•Please do not use the same socket used for any
noise generating device (such as motor, variable
lighting system).
•This unit might not work properly if turned on im-
mediately after turned off. If this happens, simp-
ly turn it off and turn it on again afew seconds
later.
•Before setting up this unit with other devices, turn
all of them off.
•This unit might get hot while operating, but there
is no need to worry about it.
CLEANING
•Use asoft cloth and clean only with amild
detergent.
•Do not use solvents such as paint thinner.
LOCATION
•Avoid using this unit in excessive heat or hu-
midity or where it may be affected by direct
sunlight or dust.
REPAIRING
•Save the necessary data on acartridge before
having the JX-8P repaired, in case it happens to
be accidentally erased.

ECONNECTION
*Before making or breaking the connections, be
sure to turn all the relevant units off.
Oo(DP-2) a
oooo
oo oo
oo oo
PA, Amplifier, etc
oO
Keyboard Amplifier, etc.
1.OUTPUT (Output Jacks)
These jacks are to connect amplifiers. To benefit the
full advantages of the JX-8P, use the amplifiers and
speakers for keyboard, PA, or audio equipment. Also,
If using two amplifiers in stereo, the chorus effect
will sound more effective.
2. LEVEL (Level Selector Switch)
With this switch, select an appropriate output level
depending on the type of the amplifier you use. The
knack is to select the position that allows undistorted
sound of desirable level with the amplifier's volume
set to 5to 7.
3. PHONES (Headphones Jack)
Connect headphones to this jack.
4. HOLD PEDAL (Hold Pedal Jack)
Connect the damper pedal DP-2 (optional), and the
Hold effect can be turned on or off by pressing the
pedal.
5. MIDI (MIDI Connectors)
These are to connect other MIDI devices. Use the
MIDI/Sync Cable MSC-25 or 50 (optional).
6. PG-800 (Programmer Connector)
Connect the programmer PG-800 (optional) here by
using the 6P DIN Cable.
7. PROTECT (Protect Switch)
With this switch set to ON, the data will be prote-
cted from accidental loss.
8. MEMORY CARTRIDGE
(Memory Cartridge Holder)
Connect the optional Memory Cartridge here. As
shown in the picture below, set the Protect Switch
on the cartridge to the On position. Then securely
connect the cartridge into the holder with the Pro-
tect Switch side facing backward.
•Before connecting or disconnecting the cartridge,
be sure to set the Protect Switch to the On position.
To prevent the accidental loss of the data, never
move the Protect Switch to the Off position, unless
it is specifically instructed in the manual.
Protect Switch

mOPERATION
1.PLAY, EDIT &WRITE
Set up the JX-8P with the necessary equipment
(such as amplifier and speaker), then turn the JX-8P
on, and it will be ready to be played (=PLAY Mode).
There are 96 different tone colors preprogramnned
in the JX-8P's memory; 64 preset tone colors,
another 32 in the internal memory, (and 32 on the
optional cartridge). You can recall any of those pat-
ches by flick of aswitch, then edit it to your taste
(= EDIT Mode). This editing operation, however,
does not automatically rewrite the existing tone
color.
If you wish to write the edited tone color, an ap-
propriate writing operation is required. The 64 Preset
tone colors, however will never be erased, while the
other 32 can be inevitably replaced with new pat-
ches by the writing operation (= WRITE Mode).
2. PLAY MODE
Check if all the connections are correctly made, then
turn all the units on. The Display will respond with:
(_M_ /ItMJJ
While the above display is seen, the JX-8P is being
tuned up, therefore cannot be played. When the
tuning-up is finally completed, the number at the
right side of the Display will become "1".
Then the Display will be as shown below.
-®
®Name of the tone color in use
®Number of the tone color (1"to 32)
©Bank in use (P, -R: Preset, J: Internal Memory,
C: Cartridge Memory)
*Bank is ablock which consists of 32 tone colors
each.
NOTE
If the JX-BP is turned on wfth the optional progra-
mmer PG-800 connected to it, the number of ;b:
may start flashing. This shows that the JX-8P is in
the Edit mode. (Refer to page 13.)
If this happens, push any of the Tone Selector
Buttons other than 1,and the flashing will stop,
turning the JX-8P to the Play mode.

A. SELECTING ATONE COLOR B. PERFORMANCE CONTROL SECTION
Any tone color can be recalled by using the Bank
Selector Button ©and the Tone Selector Button
©. There are four Banks in the JX-8P as follows.
P:32 Preset tone colors which cannot be erased
from memory
-P:32 Preset tone colors which cannot be erased
from memory
1:32 tone colors in the Internal Memory
C:32 tone colors in the Cartridge Memory
In each bank ofPand-
preprogrammed.
there are 32 tone colors
All the tone colors can be edited to your taste, but
the Preset tone colors cannot be erased for new pat-
ches. Other 64 tone colors in the internal memory
and cartridge can be replaced with new patches by
the writing operation.
The Memory Cartridge can be easily connected or
disconnected, therefore, can be effectively used to
expand the memory of the JX-8P.
Operation to select atone color
®Assign the bank you want by pressing the rele-
vant Bank Selector Button (D.
Press the Preset Button, and the Bank Pand -Pare
alternately selected.
®Assign the number of the tone color you wish
to call by pressing the relevant Tone Selector But-
ton ©.
1) Pitch Bender /LFO Lever
Move this lever to change the pitch. Guitar's bend-
ing like effect can be obtained. At its center posi-
tion, this has no effect on the JX-8P's sound, while
the left and right extremes of movement achieve the
same amount of the pitch bend effect. The maximum
effect of the bender can be optional with the Bend
Range Switch ®; Major 2nd, MinorSrd, Major 3rd,
and Perfect 5th.
Pushing this lever forward will result in vibrato ef-
fect. If the sound has no vibrato, the sound will take
on usual vibrato effect, and if the sound already
takes on vibrato, the effect will be deepened.
2) After Touch
After Touch is the effect caused by pressing down
akey hard after pressing the key in usual manner.
The JX-8P's After Touch can change any of the
following 3effects.
Vibrato The vibrato effect is deepened.
Brilliance The higher frequency is emphasized,
therefore the sound becomes brighter.
Volume The volume is increased.
Operation for After Touch
®Select the effect on which you wish to have the
After Touch effect, by pushing the After Touch But-
ton ®.
vflRATO Wii riMrf >«uac
%The indicator lights up.
®Adjust the intensity of the After Touch effect by
using the After Touch Knob ®.
When this knob is set to zero, there is no after touch
effect obtained.
More than one effect cannot be obtained at atime.

3) Portamento
The portamento effect will be on by setting thie Por-
tamento Switch to ON .The time needed for asound
to change from apitch to the other can be altered
by using the Portamento Time Knob ®.
4) Key Mode Select
The JX-8P contains 6sound modules. Six dif-
ferent key assign modes are provided to decide how
these 6synthesizer modules will be assigned to the
keys played.
I""J POLY with the Indicator lighted
This mode turns the JX-8P to a6voice
polyphonic synthesizer assigning one syn-
thesizer module to each key pressed. This
is suitable for the sound whose envelope
curve is similar to piano's or guitar's,
therefore chosen for usual performance.
I""J POLY with the Indicator flashing
This mode is very similar to Poly mode
above assigning only one synthesizer
voice to each key pressed. The primary
advantage of this mode is that only the
last note or notes played together receive
natural release length. This mode is
suitable for the performance with por-
tamento effect.
SOLO with the Indicator lighted
This mode turns the JX-8P to asingle
voice synthesizer that assigns one module
to each key.
jl SOLO with the Indicator flashing
This mode turns the JX-8P to the
monophonic synthesizer that assigns 6
modules to one key pressed.
Please be sure that you are not touching
any key on the keyboard while changing
the key modes. Otherwise, JX-8P will lose
the sound. If this happens, release the key
once, then press the key again.
IJUNISON with the Indicator lighted
In this mode, two sound modules are
assigned to each key, therefore the
created sound is richer than in Poly mode.
That is, the JX-8P becomes 3voice sy-
nthesizer.
IjUNISON with the Indicator flashing
This is similar to the Unison mode above,
but the one module of the two modules
is one octave lower than the other.

C. PATCH CHAIN
There may be some tone colors which are more often
used. It will be handy if these patches are collected
in sequence and called during live performance in
the same sequence. The JX-8P's Patch Chain
function allows you to write 8particular patches in
sequence and recall them one after another, just
by pressing buttons. Each patch in the Patch Chain
can retain atone color with different settings of
Key Mode, After Touch, Bender Range, Portam-
ento ON/Off, Bend LFO Depth, Unison Detune and
Portamento time.
Operation for calling the Patch Chain
©Press either the Patch Chain Bunon |Jor
I"J ®. Then the Display shows "1" at the left
side, and the number and name of the correspon-
ding patch.
(D Press either |"J or |'J to advance or back
up apatch program in the Patch Chain.
While using apatch program of the Patch Chain, you
may notice that it does not sound faithful to each
position of the knobs in the Performance Control
Section (such as Bend Range, Portamento). This is
because the settings of the Performance Control
Section are written into each patch program together
with other settings, and the actual positions of knobs
have no effect on the sound. However, if you move
the knob even slightly, the value of the parameter
written in memory is temporarily cancelled and ready
to be controlled manually. This does not rewrite the
value in memory, so if you want to retain it, ap-
propriate writing operation is required. (See Editing
Patch Chain in" il 4WRITE MODE" on page 22.)
Patch Chain is afunction of remembering the com-
bination of the 8patch programs with different ef-
fect and mode settings, that is, it has no ability of
retaining the nature of the patch programs in the
Chain. Therefore, if the patch programs are edited
and overwritten or replaced with new patches, the
Patch Chain accordingly changes.
If you want to return to the usual Play mode, turn
the Power Switch QOFF once, then turn it ON
again.
^o
Patch Chain
Each number in the Patch Chain contains apatch
program with tone color and several effect settings.
—Pressing |
"_| and |',| at the same
time will reset to 1
.
10

3. EDIT MODE
Like any analog synthesizer, the JX-8P had various
parameters which can be edited for sound synthesis.
The JX-8P, however, does not feature l<nobs or swit-
ches on its panel for you to touch or move. Instead,
there are two methods of synthesizing. One is call-
ing each parameter and changing its value with the
Edit Konb. The other is using the optional progra-
mmer PG-800 which works just like pane! con-
trols of asynthesizer.
A. EDITING WITHOUT PROGRAMMER
Anubmer (1 1to 95) is assigned to each parameter.
Call the parameter whose value you wish to change
by using the Tone Selector Buttons ©.
*Use the Edit Map located in the right to the Tone
Selector Buttons ©to find out the number of each
parameter.
For quicker and easier editing or synthesis from
scratch, the PG-800 may be essential.
®Call the patch you wish to edit by using the Bank
Selector Button and the Tone Selector Button.
@Press the |Hof the Edit Buttons ®.
The JX-8P is turned to the Edit mode,
Display will show ;
and the
nr n
Ml- ut" i"t tyi_j
XXSindication differs depending on the tone
color.
Pressing the |
'"[ button will always cause the
Display to respond with the same indication as
above.
11

/<< Tt rn4OO^' r
IIJJ I- UIMIInu
-®
®Number of the parameter you have called (1 1to
95)
®Name of the parameter
©Value of the parameter (The same number means
different values according to the parameters,
refer to Parameter Table on page 14 to 19.)
B. EDITING USING PROGRAMMER PG-800
The Programmer PG-800 works just like panel con-
trols of a synthesizer. That is, using the PG-800 with
the JX-8P, you can easily select any patch you like
and edit it by knobs and switches which are tangi-
ble, as you would with ausual synthesizer.
'Refer to "Parameter Table" shown on page 14to
19to study the function of each parameter.
*To set up the PG-800 with the JX-8P, use the 6P
DIN Cable of the PG-800.
6P DIN Cable
®By using the Tone Selector Buttons 1to 9, assign
the number of the parameter whose value you wish
to change. (1 1to 95)
®Play the JX-8P, and while listening to the sound,
change the value of the parameter with the Edit
Knob®.
O 6 OtJO DD
didjo-a ooD
da -a uuo_ u
uu doQU-u QODoa u
©Repeat steps
necessary.
and ®as many times as The PG-800 operates with the JX-8P set to either
Play or Edit mode.
12

1) When the JX-8P is set to the Play mode: Recall In Edit
Using the controls on the programmer, you can edit
the tone color currently in use. The Display, then
shows
While or after editing apatch program, you may wish
to listen to the original tone color before edited. The
JX-8P allows you to recall the original patch program
without erasing the edited program.
with the tone number flashing.
2) When the JX-8P is set to the Edit mode:
Operation
d) Make sure that the JX-8P is now set to the Play
mode. If not, turn the JX-8P to the Play mode.
@Press the Tone Selector Button of the edited
tone color.
The programmer works just like in Play mode above,
and moreover, by assigning the parameter number
you like, you can change the Display to see
the parameter value.
Now, the original tone color will be heard. The
display will respond as shown below with the tone
number lighted.
3) When the Manual Button on the programmer
is pressed :
In this case, the whole panel setting of the PG-800
decides the tone color. That is, now, existing patch
program in memory has nothing to do with your
sound synthesis. You make anew patch from
scratch.
®To return to the edited tone color, simply press
the same Tone Selector Button.
The Display will respond as shown below with the
tone number flashing.
The Display Window will respond as shown below. The original and edited tone colors can be alternately
selected by pressing the relevant Tone Selector
Button.
*While editing aparameter with the PG-800, even
if the current set positions of the knobs or switches
are exactly what you desire, change the position
once then return it. Otherwise, the parameter value
might not be affected by the PG-800, thereby remain
unchanged.
13

C. PARAMETER TABLE
DCO (Digitally Controlled Oscillator) DCO is the digitally controlled oscillator that con-
trols the pitch and generates the waveforms that are
the sound source of the synthesizers. Owing to its
digital control system, this offers superior pitch
stability compared to the VCD (Voltage Controlled
Oscillator). The JX-8P has 2DCO's.
Number
Parameter
Display Data
Value Function Programmer
AATi rri Ao O ^'r"
IIJ.I /_ uIM(M«;_(
„' '.J
DCO-1 Range
nA"Ti rnoOQ«'r
CIJJ I— UI— 1^ ItI'* o
DCO-2 Range
A~i II (~ nAIIr
ICJ.r /_ uIfv ("
DCO-1 Waveform
~i ~i Ti rn~i
C'_ J.I '_ uI— II I
VH I
DCO-2 Waveform
A~i TI rnA
I_J XI '_ UIT(.' S/!
DCO-1 Tune
Ti rn-I TIIMr
JJ '_ '_' '_ Iu'"'_
DCO-2 Tune
"/ I
C
IJ'
I
u
ArI
This is to change the pitch range of the DCO in ex-
act one octave steps from 2'to 16' 12', 4', 8',
16').
8' is standard.
CnIIT
_S IIV^ I
ni II r
Iu
'
^1
I1(1(0
_( LM /_( (I
(l~( (C
'V/_/ J. _l
This is to choose the output waveform of the DCO.
'V (Saw Tooth)
l_n (Pulse Wave)
ru (Square Wave)
.CIS :W(Noise)
-I AJ
(('_
nn
uu
((_
This changes the fj^equency (pitch) of iheJ5C0, in
semi-tones steps.
•Variable Range: ±12 (±1 Octave)
-V.
Note 1Note 2
Depending on the positiori of tRe Dynamics
Range Selector, the tone color alteration
differs as shown below.
OFF-' 4
®^//
^^y
/^y^
3-
2-
T
OFF
Intensity of Key touching
tnveiope ^ey i-ouow
Keyboard
i4
®3( 34 )(£
(J^)i
%
(1) a
OFF:AII Keys have the same Envelope time.
1:The highest Key ®has the ENV time exactly half
length of the lowest Key ©'s.
2:The Key dhas the ENV time exactly half length of
the lowest Key O's.
3: The Key Chas the ENV time exactly half length of
the lowest Key ©'s.
14

Parameter
Display Data
Value Function Programmer
^U
tI
II rI I /» Irn
±1 i_ (_( I;_ ;" /_!
DCO-1 LFO Depth
'I. Ti iII.J ti~ n
DCO-2 LFO Depth
T/l I//I Inil/
JJ '_ '_' 'C'Vy
DCO-1 Envelope Depth
II III I I Ml/
±1 i_ ;_f C1^ 111/
DCO-2 Envelope Depth
When The LFO output is modulating the DCO, this
parameter is used to adjust the depth of the modula-
tion. For vibrato effect, select "SI"-£" with the
LFO Waveform.
I/I(
_f _(
nn
uu When the ENV output is modulating the DCO, this
parameter is used to adjust the depth of the modula-
tion.
J.J
I— _( II r~ Ci t/ ^/t I(Ti
M'_ '_/ '^ IIUJJ
Cross Modulation
\/ tiA IIII
l\ IIl_i Ji
rhi I;
Ihi IA
I/I
•Sr'.'C '.-The pitch is determined by DCO-1 ,and
the harmonic contents by DCO-2 .The waveform
is determined by the DCO-2's synchronization to
DCO-1
.
•S.'.'C 2:Both SYNC 1and XMOD work together
.
•;r .-jGJ :DC0-1 and DCO-2 affect each other,
pitch, harmonic contents, and waveform.
•C-P ;Each DCO-1 and DCO-2 can have different
pitch and waveform.
tI
Ti vn~i rTIIhI
JJ (_ /_! c/'(u(«
DCO-2 Fine Tune
-'. I. >~i
I_l U
S
rII
The frequency (pitch) of the DCO-2 can be adjus-
ted with this parameter.
•Variable range... ±50 cent
~i HII r~ I I // \/ N/n
J'il '_ !_! ±1 II<* II
DCO Dynamics Range
When the DCO's pitch is controlled by the ENV, and
the amount of the ENV is controlled by Dynamics
(Key Touch), this parameter adjusts the sensitivity
of Key Touch. (Note 1)
nr
Ul
3-
2-
OFF •
JI— III II JJ '_ uh/l IIIII
DCO Envelope Mode
I/
(~l
U"C
This selects the polarity of the Envelope curve. Nor-
mally, /^ is used. In V^ mode, ADSR pattern
will be all inverted.
ENV 1/V
ENV 1V
ENV 2y^
ENV 2Va
15

MIXER This is where the volume balance of the DCO-1 and
DCO-2 is controlled.
Parameter Data
Value Function
Number Display
'-,' 1«/» T1/ Ti fr~i H
'1J. /N ±i l_ u1
nn
III D
nn
u u
This adjusts the level of DCO-1.
DCO-1 Level
5—
'--/ £' K-* T\/ Ti rn~(
1\±/\ j.r (_ i_s cThis adjusts the level of DCO-2.
DCO-2 Level
1/~/
1_i When ENV controls the DCO-2's level, this sets the
amount of ENV signal.
DCO-2 Envelope Depth
W'--/ '1J. /N ±i 1l\t ft 3
-J
C
A
1
nr r
When the DCO-2's level Is controlled by ENV
Depth and then by Dynamics, this sets the sen-
sitivity of the Key Touch. [NOTE 1
1
DYNAMICS
3«
2-
1* f——
«
OFF •
DCO-2 Dynamics Range
1/I" hH T\/ ^< nT/ f
''J. '» '1'_' JJ CnA
1
.. /I
U1
n-/
c
Normally, /v. is used, and in V^ mode, ADSR
pattern will be inverted.
•-' ::ENV 1/v.
,.. -;:ENV 1V^
-',; :ENV 2yv
,_, .,2 :ENV 2V
DCO-2 Envelope Mode v-
v--
MODC
n2
VCF (Voltage Controlled Filter) The output signal goes to the Mixer then to the VCF
to be filtered. Each VCF lets lower frequency har-
monics pass and cuts off the higher ones. In other
words, it is ausual low pass filter. By controlling
the cutoff point and resonance, the waveform
changes, thereby the tone color alters.
Parameter Data
Value Function
Number Display
c11. /ni~ COCl~'
_l 11111''^L. U
A
n
u
The HPF (High-Pass Filter) is afilter that passes
higher frequency harmonics and cuts off the lower
ones. As you increase the value, cutoff point goes
up, lower frequency harmonics being cut off.
3*
2-
0-
HPF
High-pass Filter
Cutoff Frequency
CD 1'rcrnr
n
on
_i _i
n n
uu
This is for changing the cutoff point of the VCF. As
you decrease the value, cutoff frequency will come
down, and the waveform gradually becomes approx-
imation of asine wave, then the sound will fade out.
10H
s-
0-
FREO
•
Cutoff Frequency
16

Parameter
Display Data
Value Function Programmer
II
—I DIII r
i'\ C'J
Resonance
I. II
rr
1/ /L/_ /n
;_i
LFO Depth
r r
"I _i Ir
/_ rA/ I/
Envelope Depth
;_ r
Key Follow
This emphasizes the cutoff point. As you increase
the value, the created sound will become more
unusual, more electronic in nature.
This controls the cutoff point by the waveform
selected at the LFO section. Increasing the value
deepens the modulation.
nn
_l _l
This controls the cutoff point of the VCF in each note
with the ENV curve set in the ENV section. As you
increase the value, tone color within one note
changes more drastically.
nn
uuThis can shift the cutoff point by key position (pitch).
At 100%, it prevents any inconsistency in the
harmonic contents caused by pitch alteration.
Parameter value 83
100% =Programmer's Knob"8") =
J(
//I
V/_ rH\l t\l I I
Dynamics Range
_t When the VCF is controlled by ENV and Key Touch
(Dynamics), this parameter determines the sensitivi-
ty of the Key Touch. (Note 1
)
3*
2-
OFF •
I., n1/ IhA nT/ r~
Envelope Mode
nn
"I
.. n
UI
n~i
i_
~i
u''_
This is to select the polarity of the Envelope curve
that controls VCF. Usually yx may be used. In
Vmode, ADSR pattern will be inverted.
ENV1 /X
ENV1 V
ENV2 Av
ENV2 V
V-
VGA (Voltage Controlled Amplitier)/
Chorus
After filtered in the VCF, the signal is fed to the VCA
where the volume (amplitude) of the sound is
controlled.
Parameter Data
Value Function Programmer
Number Display
r/I 1/rniri/
U1ui_ 1'i i_ i_ Vr1nn
nn
u u
This is to adjust the volume level, and can be effec-
tively used in the writing mode.
If it is set too high, sound may be distorted.
10-
s-
0-
l£VB.
VCA Level
17

Parameter Data
Value Function
Numbef Display
1—i1/rnh/i nnr
O1— Vt_ '"' ''!_l J.I !_
r- nTc
!_i /"/ 1»_
This is to select whether to control the VCA by the
signal from the ENV -2 (A^ )or by the Gate
signal CXL )• £0
VGA Mode
/- ~i 1'<~ OT/ \/ ^/n
U_( vL. '1JJ <MII _i
-)
c
1
nri-
This parameter determines the sensitivity of the Key
Touch (Dynamics, effect). (Note 1)
VGA Dynamics Range CffHAmCS
3-
2-
OFF •
CI.J f1..' no11C
u1/_/(«_(/> ;_( _i c
nri~
OFF: Chorus is off
1: Expansive Chorus effect is obtained.
2: Rich Chorus effect is obtained. MODE
Chorus Mode 2-
1-
OFF D
LFO (Low Frequency Oscillator) This oscillator generates extremely low frequency,
so produces avibrato or growl effect by controlling
the DCO or VCF.
Parameter Data
Value Function Programm*»r IVumbei Display
-( <
11rT*Ir
D±1^ I—
i~ ri 1(n
_l (JJ U/1
OO^'Ti
i\ 11 1 1IS
This is for selecting the LFO output waveform.
5;r:E '^ (Sine Wave)
SGiiPr. n. (Square Wave)
,9R,','I! :Random
FORM
LFO Waveform
"'c' 1ci~i Ti r1n1/
t- 1UJJ !_ !_ /"1 13 3
s
nn
uu
This sets the time needed for the modulation by the
LFO to start. n-
5-
0-
Delay Time
1-J
1cn/~/ nTr
1- 1UMJ1i/_ nn
J-1
nn
uu
This sets the rate (frequency) of the LFO.
Rate
~/i /
1"I Ti rMTi IS~ (~i
1< CI 11±1 (_ '" »_r 33
n'n
uu
This determines the depth of the vibrato effect ob-
tained by pushing the Pitch Bender/LFO Lever .As
the value is increased, vibrato becomes deeper.
This value can be written only in the Patch Chain.
/^
(Bend LFO Depth)
18

ENV (Envelope Generator) This generates the control voltage (Envelope) which
controls the DCO, VCF and VCA, therefore, alters
the pitch, tone color and volume in each note.
Parameter Data
Value Function Programmer
Mumberi Display
nA
U1
rHI t/AOTT
iZ 1^y111 1 1
This determines the time required for the voltage to
reach its maximum from the moment the key is
played.
5-
0-
KTTACK
ENV-1 Attack Time
n. /I rn1n~i OT T
ENV- Attack Time ^
n-(
O'_ i~ AM/AT) i~ r" »/
C'^*" 'JJ !_ L. '
Thisdetermin^ the time required for the voltage to
drop from the maximum to the sustain level.
[
nn
$
nn
uu
5-
aeaer
11
ENV-1 Decay Time
n~i r* N /)/DT/ r" f\/
C'>l ^'_ JJ C!_ 1
ENV-2 Decay Time °T 1
G~i
UDrhi 1/Ac11(~ C"• *• I_l U_l This sets the sustain level to which the voltage falls
at the end of the decay time. Therefore, at its max-
imum setting. Decay Time Knob has no effect.
SUST»»
ENV-1 Sustain Level
5-
4j
C»/1^.7' C1 ' C
i_ /Vv/_ _f '_; _i
ENV-2 Sustain Level
OI.J
D1
fh/ 1 //I DC'
/_ /Vy(n/_ /_ This sets the time needed for the voltage to reach
zero from the moment the Icey is released. n
5-
0-
BJEASt
n
ENV-1 Release Time
5'W i~ ^/1'~/ G1.. 1
ENV-2 Release Time 11
OC
u_l 1nil/ Af'1.. ^' G
~/
c
nrc
u''
This changes the time required for an ENV curve to
complete its curve (= ENV time). At OFF, all the
pitches have the same ENV time. As the value is
increased, higher keys have shorter ENV time. (Note
2)
ENV-1 Key Follow 3-
2'
'OLLCr**
nr
_j _i i~ «'1'G•-' C^' T
OFF D
ENV-2 Key Follow
19

D. NAMING
You can write aname Iwith up to 10 letters) to each
patch program. The names of the 64 preset patches
cannot be changed just like their tone colors, but the
names of the 32 preprogrammed patches can be
changed as you like.
"To change from the Edit mode tothe Play mode,
,and the Display
simply press the Edit Button
first responds as below.
T T
J. IrnTT
CJJ ±I
n/i !~i Ti C
'IUXII-
Operation
®Push the Edit Button ||.The Display shows
the name of the current tone color, with the 7th let-
ter from the left flashing. This tells you that the 1
letters from the 7th are ready to be changed. Enter-
ing new letters will replace the old ones.
®Using the Tone Selector Buttons ®,Bank Selec-
tor Buttons ©, Key Mode Selector Buttons ©and
After Touch Buttons ®which all have letters or
marks at their down right corner, enter the name
you like. The Display responds with the entered
letter.
Use the Patch Chain Buttons |'J ®, to move on
to the next letterwithout changing the current one.
Also, use the °™ Button to make aspace.
Then the JX-8P is returned to the Play mode. Here,
the Display responds as above with the tone number
flashing. This tells you that the tone color and /or
the name+iave been edited but not yet written ,the-
refore selecting other patch program will automati-
cally erase this patch. If you wish to retain the
edited tone color, the following Writing procedure
is required.
1n^
onw ^p-
o
<u>
o
o
o
'1 V. '- Ji'~ <<';
vr. -nc 'TjO
1111!-, M<- <11
j
n'-n' rti r«-i Z'
OTi r-n c4 ~i ~i
nrTI r<tj Tj
U'l- 11 '- 1''
I- fi r*-/ .-
20

4. WRITE MODE B. COPYING
The Edit function does not automatical ly rewrite the
existing program, unless the appropriate writing pro-
cedure is taken.
By using the Writing function, you can copy apatch
program to anew location. This applies to between
the internal memory and Cartridge, or within the
same memory area.
A. WRITING OPERATION Operation
(D When editing is completed, press the Write But-
ton (D.
d) With the JX-8P in the Play mode, call the patch
program you wish to copy, then push the Write Bu-
tton <I>.
InTTcrJ I »/cj—^ *
11nT r c
The bank and tone numbers flash.
®Set the Protect Switch on the JX-8P to the OFF
position.
(D Select the Bank (internal Memory or Cartridge)
by using the Bank Selector Button.
4yl O
The flashing numbers are Bank and Tone numbers
of the patch program which has been selected.
(D To copy apatch program within the internal
memory, or from the Cartridge memory to internal,
set the Protect Switch on the JX-8P to OFF.
To copy apatch program within the Cartridge
memory, or from the internal memory to the Car-
tridge, set the Protect Switch on the Cartridge to
OFF.
(D Assign the Bank and Tone number of anew
location.
®Select the location for the edited program by us-
ing the Tone Selector Button.
Here, let's select 17.
Iin Trnur
Iu11I-
SOUND I\~\ \I I nTT-i,_ >. Irn«11..
TTfeX 1I/1BM MX;I/_ IM1'_! 'Hl_
When the above is seen in the Display, copying is
completed. And soon the JX-8P is automatically
returned to the Play mode.
XII ««*««K*«*'*
Please note that the copying function erases the
patch program previously written in that location.
®Return the Protect Switch to the ON position.
Now, the edited tone color is written into tone
number 17. The JX-8P returns to the Play mode, and
the Display reacts as above. If you have given anew
name to the edited tone color, that name will be also
shown in the Display.
*To turn from the Write mode to the Play mode,
simply press the Write Button again. The Display
will show;
Return the Protect Switch on the JX-8P to ON.
Then <=onn th(= .IX-fiP is returned to the Plav mode.

C. EDITING PATCH CHAIN
Writing anew patch replaces the previous one within
the Patch Chain, which is seen at the left of the
Display Window. To write anew patch is:
®By using the Patch Chain Button and
I_| ®,call the patch program you wish to replace
with anew one.
e.a.)
if you press the
shows Patch Chain number 4:
Button ®while the Display
®Select the patch number(tone color) you wish
to write, by using the Bank Selector Button ©and
Tone Selector Button ©.
(D Adjust the controls for the Key Mode, After
Touch, Bend Range, Portamento On/Off, Bend
LFO Depth, Unison Detune and Portamento Time
to your taste.
®Set the Protect Switch on the JX-8P to OFF.
Press the Patch Chain Button |
""^|
The new patch program is
written here erasing the
previous one.
rhi Tro<~ Ti rIin TnIf you want to change the Patch Chain number 5con-
secutively, call 5, by using the |"J Button ,and
repeat procedure ©to ®.
The Display reacts as shown above, then the JX-8P
is returned to the Play mode.
Return the Protect Switch to the ON position.
22