Korg PX4B Le manuel du propriétaire

2

Precautions

Location

Using the unit in the following locations can re-

sult in a malfunction.

• In direct sunlight

•

Locations of extreme temperature or humidity

• Excessively dusty or dirty locations

• Locations of excessive vibration

• Close to magnetic fields

Power supply

Please connect the designated AC adaptor to

an AC outlet of the correct voltage.

Do not connect it to an AC outlet of voltage

other than that for which your unit is intended.

Interference with other electrical de-

vices

This product contains a microcomputer. Radi-

os and televisions placed nearby may experi-

ence reception interference. Operate this unit

at a suitable distance from radios and televi-

sions.

Handling

To avoid breakage, do not apply excessive force

to the switches or controls.

Care

If the exterior becomes dirty, wipe it with a clean,

dry cloth. Do not use liquid cleaners such as

benzene or thinner, or cleaning compounds or

flammable polishes.

Keep this manual

After reading this manual, please keep it for

later reference.

Keeping foreign matter out of your

equipment

Never set any container with liquid in it near

this equipment. If liquid gets into the equipment,

3

THE FCC REGULATION WARNING (for U.S.A)

This equipment has been tested and found to comply

with the limits for a Class B digital device, pursuant to

Part 15 of the FCC Rules. These limits are designed to

provide reasonable protection against harmful inter-

ference in a residential installation. This equipment gen-

erates, uses, and can radiate radio frequency energy

and, if not installed and used in accordance with the

instructions, may cause harmful interference to radio

communications. However, there is no guarantee that

interference will not occur in a particular installation. If

this equipment does cause harmful interference to ra-

dio or television reception, which can be determined

by turning the equipment off and on, the user is en-

couraged to try to correct the interference by one or

more of the following measures:

• Reorient or relocate the receiving antenna.

• Increase the separation between the equipment and

receiver.

• Connect the equipment into an outlet on a circuit dif-

ferent from that to which the receiver is connected.

• Consult the dealer or an experienced radio/TV tech-

nician for help.

Unauthorized changes or modification to this system

can void the user’s authority to operate this equipment.

CE mark for European Harmonized Standards

CE mark which is attached to our company’s products

of AC mains operated apparatus until December 31,

1996 means it conforms to EMC Directive (89/336/

EEC) and CE mark Directive (93/68/EEC). And, CE

mark which is attached after January 1, 1997 means it

conforms to EMC Directive (89/336/EEC), CE mark Di-

rective (93/68/EEC) and Low Voltage Directive (73/23/

EEC).

Also, CE mark which is attached to our company’s prod-

ucts of Battery operated apparatus means it conforms

to EMC Directive (89/336/EEC) and CE mark Direc-

tive (93/68/EEC).

it could cause a breakdown, fire, or electrical

shock.

Be careful not to let metal objects get into the

equipment. If something does slip into the

equipment, unplug the AC adaptor from the wall

outlet. Then contact your nearest Korg dealer

or the store where the equipment was pur-

chased.

4

Contents

Introduction-------------------------- 6

Main features ----------------------- 6

Turning on the power ------------- 8

Battery Low display --------------------- 8

Controls and connectors ---------- 8

LCD screen------------------------------- 10

Making connections ------------- 11

Initial Settings --------------------- 12

Quick Edit ------------------------------- 12

Play mode ------------------------- 13

1.Selecting a program---------------- 13

2.Master level -------------------------- 13

3.Bypass/Mute ------------------------- 14

4.Tuner ----------------------------------- 14

5.Specifying the

function of the Value Dial--------- 15

6.Key Lock function ------------------- 16

Rhythm mode --------------------- 17

1.Rhythm Pattern ---------------------- 17

2.Tempo---------------------------------- 18

3.Rhythm Reverb Level --------------- 18

4.Rhythm Level ------------------------- 18

Chain Pattern settings ---------------- 19

Phrase Trainer mode ------------ 19

1.Select the recording mode -------- 19

2.Recording ----------------------------- 21

3.Playback ------------------------------ 21

4.Pause ---------------------------------- 22

AUX Pitch mode ------------------ 22

Edit mode -------------------------- 23

1.Select the effect

that you wish to edit --------------- 24

5

2.Editing each effect ------------------ 24

1) DYNA (Dynamics &

Preamp Modeling) -------------- 24

2) AMP (Amp Modeling) --------- 24

3) CAB (Cabinet Modeling) ----- 25

4) MOD (Modulation &

Filter Effect Modeling) --------- 25

5) DLY (Delay Effect Modeling)- 25

6) REV

(Reverb Effect Modeling) ----- 26

7) NR (noise reduction)----------- 26

8) TX (Infrared transmitter) ------ 26

9) RENAME ------------------------- 27

10) WRITE --------------------------- 27

3.Reloading the factory programs -

28

Troubleshooting------------------- 28

Effect Parameter------------------ 30

DYNA (Dynamics &

Preamp modeling) ----------------- 30

AMP (Amp Modeling)----------------- 31

CAB (Cabinet modeling) ------------- 34

MOD (Modulation &

Filter Effect Modeling) ------------ 34

About the

Intelligent Pitch Shifter--------- 37

DLY (Delay Effect Modeling) -------- 38

REV (Reverb Effect Modeling) ------ 38

Preset Program Name ---------- 39

Rhythm Pattern List -------------- 40

Specifications---------------------- 41

6

Introduction

Thank you for purchasing the TONEWORKS

PANDORA PX4B Bass Personal Multi Effect

Processor. In order to enjoy your PANDORA

PX4B, please read this owner’s manual care-

fully and retain it for future reference.

Main features

The PX4B is a highly versatile multi-effect de-

vice in a compact package. It makes it easy to

use Korg's proprietary " " modeling tech-

nology to create detailed and powerful model-

ing sounds.

122 types of effect variations

A maximum of seven effects can be used si-

multaneously.

IPE (Integrated Parameter Edit) system

Easy to adjust effect settings.

50 user and 50 preset programs

Amp modeling selector and control knobs

You can quickly and easily select ten types of

amp models and bass synths.

Infrared transmitter built-in

Infrared wireless headphones can be used for

remote wireless monitoring.

Backlit LCD

The LCD screen can be easily viewed even in

dark locations.

Auto Tuner function

This feature makes tuning fast and easy. You

can also tune without being heard (i.e., while

muted).

AUX pitch function

You can transpose an audio source from a CD

player or other device connected to the AUX

jack, and erases the bass from a song for play

along purposes (Bass Cancel function) --- a

great way to practice!

7

Rhythm function

The PX4B can play 100 rhythm patterns (in-

cluding metronome). Multiple patterns can also

be connected for successive playback.

Phrase Trainer function

Sound from a CD player or bass can be record-

ed (maximum of 31.7 seconds), and played back

as a loop. The playback speed can then be

slowed down without affecting the pitch of the

sound. The rhythm selected in Rhythm mode

and the bass output can also be recorded si-

multaneously.

TAP button

You can easily set the Delay Time or the tempo

of the Rhythm function to match the tempo of

the song.

Value dial

This lets you rapidly select programs or edit the

effects.

What is

?

(Resonant structure and Electronic

circuit Modeling System) is KORG’s propri-

etary sound modeling technology which

precisely reproduces the complex charac-

ter and nature of both acoustic and electric

instruments as well as electronic circuits in

real world environments.

emulates

a wide variety of sound generation charac-

teristics including instrument bodies, speak-

ers & cabinets, acoustic fields, micro-

phones, vacuum tubes, transistors, etc.

8

Turning on the power

Remove the battery cover located on the bottom

of the PX4B by sliding it in the direction of the

arrow. Insert four AAA

alkaline batteries as

shown in the illustration.

Be sure to insert the bat-

teries observing the cor-

rect polarity.

Battery Low display

When the battery begins to run down, the Low

Battery icon

will light. When this icon lights, re-

place the batteries as soon as possible.

Programs and other data (except for the data

being edited) will not be lost even if the battery is

removed and changed.

Batteries that have run down must be removed

from the PX4B. If you leave dead batteries in

the unit, malfunctions (battery leakage, etc.) may

occur. You should also remove the batteries

when you do not expect to use the PX4B for an

extended period of time.

An AC adapter is not included with this prod-

uct. It must be purchased separately.

Controls and connectors

1Control knobs

These knobs control the tone, and volume of

the amp modeling.

2Liquid Crystal Display (LCD)

3TUNE/BYPASS button

4EXIT button

This button returns you back to Play mode from

any mode.

9

5ENTER/REC button

This button is used to switch an effect on/off,

or to start recording in Phrase Trainer mode.

6Input level switch

Use this to adjust the input level (appropriate

for the output level of your bass).

7Amp Modeling selector

Select the type of amp modeling.

8▲/▼ buttons

Use these buttons to select programs and edit

effects.

9OUTPUT jack

Connect this jack to your bass amp or head-

phones etc.

0INPUT jack

Connect your bass to this jack.

AAUX jack (stereo)

Connect this jack to a CD player or other au-

dio source.

BDC 4.5V

The separately sold AC adapter (DC 4.5V

) should be connected here.

C√/® buttons

Use these buttons to select the parameter that

you wish to edit, and to operate the Phrase

Trainer function.

DPower switch/Backlight switch

This switch turns the power On/Off, and also

turns the backlight On/Off.

Using the backlight and/or infra-red wireless

headphone transmitter, significantly shortens

the lifespan of the batteries.

EValue dial

Use this to adjust the master level, edit effects,

and select programs.

FTAP button

You can set the Delay Time by pressing this

button twice at the desired tempo of delay. In

Rhythm mode, you can set the tempo of the

rhythm in the same way.

GMode buttons

Use these buttons to enter the Rhythm, Phrase

Trainer, or AUX Pitch modes.

10

LCD screen

1Effect chain

This area indicates the on/off status of the

DYNA, AMP, CAB, MOD, DLY, and REV ef-

fects

2Program name/Effect type display

This area shows the program name or effect

type. When the PX4B is bypassed or muted,

this will display as the tuner.

3Low Battery icon

This icon will light when the batteries run down.

4Mode icons

These icons will light when you are in the AUX

Pitch, Phrase Trainer, or Rhythm modes.

5Infrared transmitter icon

This icon will light when the infrared transmit-

ter is on.

6Edit/Original icons

The EDIT icon will light when you enter Edit

mode. If the parameter or value being edited

matches the value that is written in the pro-

gram, the ORIG icon will light.

7Program number/value display

This displays the program number.

When you change the Master Level, its value

will be displayed here for several seconds.

During editing, this displays the parameter

values.

8Master/Value icons, bar graph

When MASTER is lit, the master level of the

program is indicated graphically. When VAL-

UE is lit, the value of the parameter is indicat-

ed graphically.

11

Making connections

When connecting an external device (ie-bass

amp, stereo, ac adapter, etc) be sure to turn the

unit off.

*1 Do not block the transmission window when

using the infrared transmitter function.

*2 Be sure to use only the specified AC adapter

(DC 4.5V

).

*3 If a CD player or other audio source is con-

nected to AUX jack, you can play along on

your bass with a tape, etc. However the vol-

ume must be adjusted on the connected de-

vice.

*4 Connecting cables are sold separately.

*5 PX4B’s output jack is stereo. If you use a stan-

dard mono cable to connect it to a bass amp

etc., only the L (left) output will be heard.

*6 PX4B’s output level and sound quality will vary

depending on which headphones are used.

We recommend using good quality low imped-

ance headphones, 32 Ohms or less with a

sensitivity rating near 100dB/mW or above.

Many headphones sold for use with portable

CD or cassette players will work just fine.

12

Initial Settings

1. When you finish making connections, set the

power switch in the “ON” position. (This set-

ting is referred to as Play mode.)

Use the ▲/▼ buttons to select a program.

2. Set the input level switch to a position appro-

priate for the output level of your bass.

Hi: Basses with a high output level (Active)

Lo: Basses with a low output level (Passive)

3. Set the volume control of the bass to its usual

position. Use the Value dial to adjust the mas-

ter level.

If you want to use the infrared transmitter func-

tion, refer to p.26 of Edit mode, "8) TX (Infrared

transmitter)."

Quick Edit

In each mode (except when Mute/Bypass or Key

Lock are active), you can use the Amp Model-

ing selector to quickly change the amp model-

ing type, or use the control knobs to adjust the

tone, or volume of amp modeling. When you move

a control knob, the parameter name and value

will appear for several seconds in the value dis-

play. If the setting matches the original setting,

the ORIG icon will light.

The Delay Time of Delay Modeling can also be set

by pressing the TAP button twice at the desired

interval (except when in Rhythm mode). To check

the Delay Time that was specified, press and hold

the TAP button for two seconds or longer.

When you use the Amp modeling selector to

choose an amp, the PX4B will automatically

select the most suitable cabinet model and turn

it on.

Settings that you make using Quick Edit will re-

turn to the original settings of the program if you

change programs or turn off the power before

Writing (see p.26).

13

Play mode

Play mode is the mode in which you will normally

use the PX4B.

1.Selecting a program

You can choose from 50 user programs

(U01...U50) and 50 preset programs (P01...P50).

Use the ▲/▼ buttons to select a program. Pro-

grams can be selected even when you are in

Rhythm mode, AUX Pitch mode, or Phrase Trainer

mode (except while recording).

2.Master level

When the MASTER icon is lit, the value graph

will indicate the master level.

When you turn the Value dial to adjust the mas-

ter level, the master level value will be shown in

the program number / value display for several

seconds. The master level is remembered even

when the power is turned off.

14

You can also adjust the settings so that the ▲/▼

buttons will adjust the master level. (See p.15)

3.Bypass/Mute

When you press the TUNE/BYPASS button, the

PX4B will be bypassed, and the original sound

will not be processed by any effect.

The effect chain will blink, and the display will

indicate “BYPASS” for approximately one second.

If you press and hold the TUNE/BYPASS button

for longer than one second, the output signal will

be muted.

The effect chain will blink rapidly, and the display

will indicate “MUTE” for approximately one sec-

ond.

Bypass/mute will be turned off when you press

the TUNE/BYPASS button once again.

You can also return to Play mode by pressing the

EXIT button.

Bypass or Mute can also be entered from modes

other than Play mode.

4.Tuner

The tuner will operate when you bypass or mute.

Play a single string on your bass. The LCD will

show the note name and the calibration. If the

pitch is more than a semitone higher than the

note name, a sharp symbol will appear at the

upper right of the note name.

The display area will act as a meter to show the

pitch.

15

Tune the string of your bass so that the indicator

above the center mark is lit.

The tuner (bypass/mute) will be turned off when

you press either the TUNE/BYPASS button.

You can also return to Play mode by pressing the

EXIT button.

Calibration

(frequency of the standard A = 440 pitch)

You can use the Value dial to adjust calibration

in the range of A = 438 Hz...445 Hz.

The calibration setting you make will be valid until

the power is turned off. Once the power is turned

off, calibration will be reset to A = 440 Hz.

5.Specifying the function of the Value Dial

You can specify the function that the Value dial

will perform in Play mode. In Play mode, hold

down the EXIT button and press either the √

button or the ® button to assign the following

functions.

● Hold down the EXIT button and press the √

button.

The LCD will indicate “MASTER” for approxi-

mately one second.

The Value dial will

adjust the master level, and

the ▲/▼ buttons will

select programs. You can

use the Value dial to adjust the master level

quickly. Each time the power is turned on, this

setting will be in effect.

16

● Hold down the EXIT button and press the ®

button.

The LCD will indicate “PROGRAM” for approx-

imately one second.

The Value dial will

select programs, and the

▲/▼ buttons will

adjust the master level.

You can use the Value dial to select programs

quickly.

If you want to change the function of the Val-

ue dial so that it will

adjust the master level,

hold down the EXIT button once again and

press the √ button, or turn on the power once

again.

6.Key Lock function

By activating the Key Lock function, you can dis-

able all operations except for selecting programs.

This is a convenient way to prevent accidental

operation during a live performance.

Hold down the EXIT button and press the TUNE/

BYPASS button. The LCD will indicate “KEY-

LOCK” for approximately one second.

The ▲/▼ buttons will select programs, and other

buttons and the Value dial will not function.

The Key Lock function will be cancelled when the

power is turned off. You can also cancel the Key

Lock function by performing "5.Specifying the

function of the Value Dial"(p.15).

17

Rhythm mode

To enter Rhythm mode, press the RHYTHM but-

ton once when in Play mode (except for mute/

bypass or key lock), AUX Pitch mode, or Phrase

Trainer mode.

When you enter this mode, the Rhythm Pattern

selection screen will appear, the selected rhythm

will start, and the Rhythm mode icon will light.

The indication of the value graph will change ac-

cording to the pattern or tempo.

This mode contains the following four parame-

ters. Use √/® to select parameters, and use

the Value dial and the TAP button to set the val-

ue of each parameter.

If you select "CHAIN" as the rhythm pattern, there

will be more chain pattern settings. (Refer to p.18,

"Chain pattern settings")

CHAIN

If you select "JAM" as the recording mode in

Phrase Trainer mode, the rhythm will sound with

the pattern and tempo that you specify here.

The settings you select here are remembered

even when the power is turned off.

1.Rhythm Pattern

Use the Value dial to select a rhythm pattern

(p.40).

Rhythm Pattern

Rhythm & Bass mode icon

18

2.Tempo

Set the tempo in the range of 40–208 bpm.

You can also set the tempo by pressing the TAP

button twice at the desired rhythm.

For a 6/8 time signature, the tempo can be set in

a range of   =40–208.

3.Rhythm Reverb Level

Use the Value dial to set the amount of Rhythm

sound that will be sent to reverb modeling.

The same effect as for the bass is used for re-

verb. This parameter has no effect if you have

selected a program that does not use reverb

modeling, or if the reverb effect level is "0."

4.Rhythm Level

Use the Value dial to set the level of Rhythm

sound. The bass note will be affected only if bass

is turned on.

19

Chain Pattern settings

These parameters are added only if you select

"CHAIN" as the rhythm pattern. Press the EN-

TER/REC button to access the Chain Parame-

ter Select screen. Use the √/® buttons to se-

lect the location (1--8) for which you want to

change the pattern, and use the value dial to

select the pattern (p.40) that will play at that lo-

cation. Use the ▲/▼ buttons to specify the num-

ber of times (1--8) that the selected pattern will

repeat.

Up to 8 patterns can be connected. If you want to

create a chain of 7 or fewer patterns, select "PTN

END" for the last pattern.

Press the ENTER/REC button to exit the Chain

Pattern Select screen.

Phrase Trainer mode

An audio source from the AUX jack or a phrase

you play on your bass can be recorded, and

played back repeatedly as a loop.

This provides a convenient way to practice by

playing along with the repeating phrase.

You can slow down the playback speed without

affecting the pitch, which can help you to learn

difficult phrases.

If you select "JAM" as the recording mode, the

rhythm you specified in Rhythm mode will be re-

corded simultaneously with the bass input, and

looped.

1.Select the recording mode

In Play mode (except during bypass/mute or key

lock), Rhythm mode, or AUX Pitch mode, press

the PHRASE TRAINER button to enter Phrase

Trainer mode.

When you enter this mode, the recording mode

and time select screen will appear, and the

Phrase Trainer icon will blink.

20

In this screen, the PX4B will be ready to record.

The recording mode will cycle through the fol-

lowing choices each time you press the PHRASE

TRAINER button.

AUX Records only the AUX input

BASS Records only the bass sound

AUX+BAS Records both the AUX input and

bass

JAM Records the bass together with the

rhythm that was last selected in

Rhythm mode

Use the value dial to select the recording time

(for "JAM," the number of measures).

8 Approximately 7.9 seconds

16 Approximately 15.8 seconds

32 Approximately 31.7 seconds

1, 2, 3... Number of measures

If the recording mode is set to "JAM," the maxi-

mum number of recordable measures will be au-

tomatically calculated from the tempo. Also, the

audio quality will be automatically set according to

the tempo and the specified number of measures.

If you select a long recording time (16 or 32),

the audio quality of the recording will be lower.

If the tempo of the rhythm is extremely slow, it

will not be possible to record a large number of

measures. Please re-specify the tempo in

Rhythm mode (maximum length is approximate-

ly 31.7 seconds)

Start playback on your CD or other audio source,

and at the point where you wish to begin record-

ing, press the ENTER/REC button. Recording

will begin.

If the recording mode is "JAM," recording will

begin after one measure of playback.

If, after recording, you want to change the re-

cording mode or recording time, press the

PHRASE TRAINER button while playback is

paused.

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