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2.1 - Selecting a Stored Pre-Set

When you first switch on the JFX-1 it will

automatically select program : 000. Thereafter it will
go to the program location last selected before
switching off.

To recall a stored program in the JFX-1, press the

UP or DOWN keys until you reach the desired
program location.

The Display Shows:

The program is automatically selected once you

stop scrolling through.

2.2 - Editing Pre-Set Programs

To alter the parameters of a stored JFX-1 program

you must first press EDIT.

The Display shows:

Then press EDIT a  second time.

Now use the rotary data controls to adjust the

parameter values.

DATA control 

adjusts the first

parameter (in this example ‘dcy’).

DATA control 

adjusts the second

parameter (in this example ‘room’).

DATA control 

adjusts the third

parameter (in this example ‘bright’).

As soon as any parameter is adjusted the

‘EDIT’  light will show.

Let us assume that you have altered the decay to

value ‘50’, the type of reverb to ‘hall’ and left the
character of the reverb on ‘bright’.

The Display shows:

2.3 - Storing Altered Parameter Values

To store altered parameter values, press

the ‘STORE’ key.

The Display shows:

If you wish to store the altered parameters to

the same location, press ‘STORE’ a second time.

The Display shows:

If you wish to store the altered parameters to a

different location, before pressing the ‘STORE’ key
for the second time, use the ‘UP’ and ‘DOWN’
keys to select the new program location.  E.G. from
program 4 to program 54.

The Display shows:

Pressing ‘STORE’ again completes the store

function.

2.4 - Naming a Program

To change the name of an existing or new

program, press the ‘EDIT’ key.

The Display shows:

Press the ‘UP’ key to move the cursor along.

The Display shows:

Press the ‘EDIT’ key.

The Display shows:

Move the cursor along using the ’UP’ and

‘DOWN’ keys and as it rests under each letter,
that character can then be altered using the Data
control 

.

Follow the Store procedure for storing altered

parameters by pressing the ‘STORE’ key once to show
the desired program to which the name should be
assigned and then a second time to complete the store.

Once the store function has been completed

the ‘EDIT’ LED will go out.

FRENCH

GERMAN

SP

ANISH 

JAP

ANESE

ENGLISH

5

D a t a

1

D a t a

2

D a t a

3

E d i t

D a t a

3

E d i t

t

S t o r e

t

S t o r e

t

S t o r e

E d i t

S y

E d i t

S y

PROGRAM

004 : Live room

STORE PROGRAM

at : 004

PROGRAM

004 : live room

STORE PROGRAM

at : 054

REVERB : NAME : MODE

REVERB : NAME : MODE

REVERB : NAME : MODE

NAME : 

004 :    live room

REVERB :  dcy 32

room :  bright 

REVERB :  dcy 50

hall :  bright 

4

FRENCH

GERMAN

SP

ANISH 

JAP

ANESE

ENGLISH

Section 2 - Quick Reference
Guide

1.  Input Level Control

Selects the input level.  The peak LED should light

occasionally at optimum level.

2.  Toggle Switch

Press to display output levels of direct and effects

signal.  Press again to return the display to the point
from where you last selected the ‘Toggle’ function.

3.  Data Controls

Use the rotary controls to adjust parameters

displayed by the LCD window.

4.  Up & Down Keys

Use these to scroll through and select programs

when in Normal mode.  When in Edit mode use to
select the parameters to be edited.

5.  Edit LED

Indicates when a selected program has been edited

but not stored.

6.  Edit Key

Press once to enter the program menu.  Press again

to display parameter to be edited.

7.  Quit Key

Takes you back to the original program number and

title.

8.  System Key

Gives access to the MIDI functions and remote

jack.

9.  Store Key

Press once to show the program location to which

the altered parameters will be stored.  Press again to
complete the store.

Power

Made in England

Input Level

Peak

D a t a

D a t a

D a t a

S I G N A L   P RO C E S S O R

To g g l e

E d i t

1

3

2

JFX-1

E d i t

S y s t e m

Q u i t

S t o r e

1

2

3

4

5

9

7

6

8

Summary of Contents for JFX-1

Page 1: ...USER MANUAL ...

Page 2: ... Diagrams A With a Home Recording Mixer B Stereo Rack System C With a Stereo or Mono Combo Amp Section 2 Quick Reference Guide 2 1 Selecting a Stored Pre Set 2 2 Editing Pre Set Programs 2 3 Storing Altered Parameter Values 2 4 Naming a Program Section 3 Front Panel 3 1 The Rear Panel Section 4 The Mixer Section 4 1 Setting the Output Levels Section 5 Chorus Flange Mode 5 1 Chorus Flange Types 5 2...

Page 3: ...al in a safe place for future reference after studying it carefully as gaining a full understanding of how the JFX 1 operates will ensure that you are getting the most from it s processing power especially when designing your own personal sounds Manufactured in Great Britain by Marshall Amplification plc Bletchley Milton Keynes England Model No JFX 1 WARNING No user servicable parts inside refer s...

Page 4: ...splay shows Move the cursor along using the UP and DOWN keys and as it rests under each letter that character can then be altered using the Data control Follow the Store procedure for storing altered parameters by pressing the STORE key once to show the desired program to which the name should be assigned and then a second time to complete the store Once the store function has been completed the E...

Page 5: ...ached when the peak LED lights occasionally 2 Display Window This LCD display provides the interface between you and the JFX 1 by displaying the current status of all operating and programming functions in 2 lines of 16 characters each 3 Toggle Switch Pressing the Toggle Switch at any time displays the output levels of the Direct and Effects signal The Direct level is adjusted using DATA Control a...

Page 6: ...djusted using Data Control Duck 00 99 Ducking allows you to momentarily lessen the amount of effect present in relation to the dry signal in order to keep the sound uncluttered and more intelligible If for example you were using a high level of Chorus on a distorted sound you may want the initial note to remain almost unaffected but as it decays require more effect to come in This is where a high ...

Page 7: ...tion of multiple taps voices taken from a delay line where each voice has it s own individually programmable set of parameters The JFX 1 features 6 stereo voices tappable from a delay line 730 milliseconds long each with modulation to effectively give you the option of creating chorus flange effects with or without delay In addition by making each individual delay and it s position within the ster...

Page 8: ...duced when an accurate reproduction of the input signal is delayed for a specified time usually in milliseconds then fed back to the input to create controllable multiple repetitions The JFX 1 contains three different delay types to produce a multitude of high quality mono stereo or ping pong delays 7 1 Delay types The delay types are all selected using the Data Control Mono The signal can be dela...

Page 9: ...avel Large Hall The Large Hall setting extends the reflections even further and produces the simulation of huge spaces with very high ceilings and extra long decay characters 8 2 Reverb Characters In addition to the four reverb types the JFX 1 also contains four quite distinct programmable reverb characters By careful adjustment of the frequency content of the decay we have made each character equ...

Page 10: ...ypes of master chorus flange selections These are selected using Data Control as follows Mode 1 Mono Chorus Standard mono chorus where the same effect appears at both left and right outputs Mode 2 Stereo Flanger Modulation split so that as one side flanges up the other side flanges down Mode 3 Stereo Chorus Split so that as the de tuning effect appears flat at one output it appears sharp at the ot...

Page 11: ...is factory set to receive it s MIDI commands on all channels Omni but if you wish to select a particular channel the procedure is as follows Press the System key The Display shows Use the Up key to move the cursor until it rests under MIDI Press the System key again The Display shows Use the Up key to scroll through the MIDI channels 01 16 and the Down key to scroll back again This is a global fun...

Page 12: ... key to display the battery level The Display shows When the battery level becomes low The Display shows You should now make arrangements to return the JFX 1 to your nearest authorised service centre for battery replacement and also back up your programs FRENCH GERMAN SPANISH JAPANESE ENGLISH 21 20 FRENCH GERMAN SPANISH JAPANESE ENGLISH 12 5 MIDI Controllers For live performance it can be benefici...

Page 13: ... 470 K Output Impedance 470 Ohms FRENCH GERMAN SPANISH JAPANESE ENGLISH Function Transmitted Recognised Remarks Basic Default 1 Omni Memorised Channel Altered 1 16 1 16 Default x Mode 1 Mode Message x x Altered x x Note x x Number True Voice x x Velocity Note ON x x Note OFF x x After Key s x x Touch Channels x x Pitch Bender x x Control Change x 0 Program 0 127 0 127 Input Output Change True 0 12...

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