KORG PANDORA PX4 User Manual

Precautions

Location

Using the unit in the following locations can result 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 devices

This product contains a microcomputer. Radios and televisions placed nearby may experi-

ence reception interference. Operate this unit at a suitable distance from radios and televisions.

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,

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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 purchased.

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

Also, CE mark which is attached to our company’s products of Battery operated apparatus means it conforms to EMC Directive (89/336/EEC) and CE mark Directive (93/68/EEC).

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 interference in a residential installation.This equipment generates, 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 radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged 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 different from that to which the receiver is connected.

•Consult the dealer or an experienced radio/TV technician for help.

Unauthorized changes or modification to this system can void the user’s authority to operate this equipment.

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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 -------------------------	13
4.Tuner -----------------------------------	14

5.Specifying the
function of the Value Dial ---------	15
6.Key Lock function -------------------	16
Rhythm & Bass mode -----------	16
1.Rhythm Pattern ----------------------	17
2.Tempo ----------------------------------	17
3.Bass On/Off & Bass Key ----------	17
4. Rhythm & Bass Reverb Level ----	18
Chain Pattern settings ----------------	18
Phrase Trainer mode ------------	19
1.Select the recording mode --------	19
2.Recording -----------------------------	20
3.Playback ------------------------------	21
4.Pause ----------------------------------	21
AUX Pitch mode ------------------	22

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Edit mode --------------------------	22
1.Select the effect
that you wish to edit ---------------	23
2.Editing each effect ------------------	23
1) DYNA (Dynamics &
Pick up Modeling) ---------------	23
2) AMP (Amp Modeling) ---------	23
3) CAB (Cabinet Modeling) -----	24
4) MOD (Modulation &
Filter Effect Modeling) ---------	24
5) DLY (Delay Modeling) ---------	24
6) REV (Reverb Modeling) -------	25
7) NR (noise reduction) -----------	25
8) RENAME -------------------------	25
9) TX (Infrared transmitter) ------	26
10) WRITE ---------------------------	26
3.Reloading the factory programs	27
Troubleshooting -------------------	27

Effect Parameter ------------------	29
DYNA (Dynamics
& Pickup modeling) ----------------	29
AMP (AMP Modeling) ----------------	31
CAB (Cabinet modeling) -------------	34
MOD (Modulation &
Filter Effect Modeling) ------------	35
About the Intelligent
Pitch Shifter ------------------	37
DLY (Delay Modeling) -----------------	38
REV (Reverb Modeling) --------------	38
Preset Program Name ----------	39
Rhythm Pattern List --------------	40
Specifications ----------------------	41

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Introduction

Thank you for purchasing the TONEWORKS

PANDORA PX4 personal multi-effect processor. In order to enjoy your PANDORA PX4, please read this owner’s manual carefully and retain it for future reference.

Main features

The PX4 is a highly versatile multi-effect device in a compact package. It makes it easy to use Korg's proprietary " " modeling technology to create detailed and powerful modeling sounds.

124 types of effect variations

A maximum of seven effects can be used simultaneously.

IPE (Integrated Parameter Edit) system

Easy to adjust effect settings.

50 user and 50 preset programs

Amp modeling selector and control knobs

Of the 15 different varieties, 11 types of amp models can be edited quickly and easily.

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).

Rhythm and bass function

39 types of rhythm and bass patterns or a metronome can be sounded. Multiple patterns can also be connected for successive playback.

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AUX pitch function

You can transpose the pitch of the sound from a CD player or other audio source connected to the AUX jack.

Phrase Trainer function

Sound from a CD player or guitar can be recorded (maximum of 30 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 & Bass mode and the effect output can also be recorded simultaneously.

TAP button

You can easily set the Delay Time or the tempo of the Rhythm & Bass 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 proprietary sound modeling technology which precisely reproduces the complex character and nature of both acoustic and electric instruments as well as electronic circuits in real world environments.emulates a wide variety of sound generation characteristics including instrument bodies, speakers & cabinets, acoustic fields, microphones, vacuum tubes, transistors, etc.

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Turning on the power

Remove the battery cover located on the bottom of the PX4 by sliding it in the direction of the arrow. Insert four AAA al- kaline 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, replace 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 PX4. 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 PX4 for an extended period of time.

An AC adapter is not included with this product. It must be purchased separately.

Controls and connectors

1Control knobs

These knobs control the gain, 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.

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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 guitar).

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 guitar amp or headphones etc.

0INPUT jack

Connect your guitar to this jack.

AAUX jack (stereo)

Connect this jack to a CD player or other audio source.

BDC4.5V

The separately sold AC adapter (DC4.5V ) 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.

If you are operating the PX4 on batteries, the operating time will be shorter if you turn on the infrared transmitter or backlight.

EValue dial

Use this to adjust 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 & Bass mode, you can set the tempo of the rhythm in the same way.

GMode buttons

Use these buttons to enter Rhythm & Bass, Phrase Trainer, or AUX Pitch modes.

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LCD screen

1Effect chain

This area indicates the on/off status of the

DYNA, AMP, CAB, MOD, DLY, and REV effects

2Program name/Effect type display

This area shows the program name or effect type. When the PX4 is bypassed or muted, this will function 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 AUX Pitch, Phrase Trainer, or Rhythm & Bass modes.

5Infrared transmitter icon

This icon will light when the infrared transmitter 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 program, 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 VALUE is lit, the value of the parameter is indicated graphically.

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Making connections

When connecting an external device (ie-guitar amp, stereo, ac adapter, etc)be sure to turn the unit off.

mini-component /	*1	*1
stereo etc.
guitar amp /
powered monitor		AC adapter
		*2
		*1
*5
	*4	*4
headphone
*6

guitar	CD player etc.*3

*1 Do not block the transmission window when using the infrared transmitter function.

*2 Be sure to use only the specified AC adapter (DC4.5V ).

*3 If a CD player or other audio source is connected to AUX jack, you can play along on your guitar with a tape, etc. However the volume must be adjusted on the connected device.

*4 Connecting cables are sold separately.

*5 PX4’s output jack is stereo. If you use a standard mono cable to connect it to a guitar amp etc., only the L (left) output will be heard.

*6 PX4’s output level and sound quality will vary depending on which headphones are used. We recommend using good quality low impedance 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.

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Initial Settings

1.When you finish making connections, set the power switch in the “ON” position. (This setting is referred to as Play mode.)

Use the ▲/▼ buttons to select a program.

2.Set the input level switch to a position appropriate for the output level of your guitar.

Hi: Guitars with a high output level (humbucking pickups)

Lo: Guitars with a low output level (single coil pickups)

3.Set the volume control of the guitar to its usual position.Use the Value dial to adjust the master level.

If you want to use the infrared transmitter function, refer to p.26 of Edit mode, "9) TX (infrared transmitter)."

Quick Edit

In each mode (except when Mute/Bypass or Key Lock are active), you can use the Amp Modeling selector to quickly change the amp model-

ing type, or use the control knobs to adjust the gain, 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 display. 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 & Bass mode). To check the Delay Time that was specified, press and hold the TAP button for two seconds or longer.

Amp gain, tone, and volume

Program name	Program
	number

	Set the
	delay time
Input level	Master level
switch	adjustment
Amp selection	Program selection

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Settings that you make using Quick Edit will return to the original settings of the program if you change programs or turn off the power before Writing (see p.26).

Play mode

Play mode is the mode in which you will normally use the PX4.

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. Programs can be selected even when you are in Rhythm & Bass 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 master 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.

Master icon

Value graph

Program number display

Master level value

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 PX4 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 second.

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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.

meter

sharp

note name calibration

center mark

Play a single string on your guitar. 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.

Tune the string of your guitar 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.

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	5.Specifying the function of the Value Dial	● Hold down the EXIT button and press the ®
	You can specify the function that the Value dial	button.
		The LCD will indicate “PROGRAM” for ap-
	will perform in Play mode. In Play mode, hold
		proximately one second.
	down the EXIT button and press either the √
	button or the ® button to assign the following	The Value dial will select programs, and the
	functions.	▲/▼ buttons will adjust the master level.
		You can use the Value dial to select programs
	● Hold down the EXIT button and press the √
	button.	quickly.
	The LCD will indicate “MASTER” for approx-
	imately one second.
	The Value dial will adjust the master level,	Select a program
	and the ▲/▼ buttons will select programs.	Adjust the master level
	You can use the Value dial to adjust the mas-
	ter level quickly. Each time the power is turned
	on, this setting will be in effect.

Adjust the

master level Select a program

If you want to change the function of the Value 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.

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6.Key Lock function

By activating the Key Lock function, you can disable 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 “KEYLOCK” for approximately one second.

The ▲/▼ buttons will select programs, and other buttons and the Value dial will not function.

Only program selection is possible

The Key Lock function will be cancelled when the power is turned off. You can also cancel the Key Lock function by performing "5. Value Dial function setting."(p.15).

Rhythm & Bass mode

To enter Rhythm & Bass mode, press the RHYTHM button 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 & Bass mode icon will light. The indication of the value graph will change according to the pattern or tempo.

This mode contains the following four parameters. Use √/® to select parameters, and use the Value dial and the ENTER/REC button to set the value 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")

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Rhythm		Tempo				Bass On/Off
pattern						and Bass Key
Chain pattern						Rhythm & Bass
setting						reverb level

Additional settings when rhythm pattern is "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 the rhythm pattern (p.40)

Rhythm Pattern

Rhythm & Bass mode icon

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.

tempo display

3.Bass On/Off & Bass Key

Here you can switch the bass on/off, and specify the key in which the bass will play.

If you press the ENTER/REC button in this screen, the bass will play in time with the rhythm. Depending on the rhythm pattern that you have selected, some bass lines will include a chord progression.

When the bass note is on, you can use the Value dial to set the key in a range of C, C ...A , B, allowing you to practice your guitar in a scale that matches that key.

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key display

If “METRONM” (metronome) is selected as the rhythm pattern, there will be no bass notes, and this screen will not appear.

When using Chain Patterns, the Bass Key setting will be ignored.

4. Rhythm & Bass Reverb Level

Use the Value dial to set the amount of Rhythm & Bass sound that will be sent to reverb modeling.

Reverb level

The same effect as for the guitar is used for reverb. 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."

Chain Pattern settings

These parameters are added only if you select "CHAIN" as the rhythm pattern. Press the ENTER/REC button to access the Chain Parameter Select screen. Use the √/® buttons to select 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 be used at that location. Use the ▲/▼ buttons to specify the bass key of the selected pattern.

Pattern location Key

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.

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Phrase Trainer mode

An audio source from the AUX jack or a phrase you play on your guitar 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 & Bass mode will be recorded simultaneously with the guitar input, and looped.

1.Select the recording mode

In Play mode (except during bypass/mute or key lock), Rhythm & Bass 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. In this screen, the PX4 will be ready to record.

	Recording	Recording
	mode
		time
		Phrase Trainer icon

The recording mode will cycle through the following choices each time you press the PHRASE TRAINER button.

AUX Records only the AUX input GUITAR Records only the guitar sound AUX+GTR Records both the AUX input and

guitar

JAM Records the guitar together with the rhythm that was last selected in Rhythm & Bass 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, 4, 8 Number of measures

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If the recording mode is "JAM," the recording quality will be set automatically, based on 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 & Bass mode (maximum length is approximately 31.7 seconds)

Start playback on your CD or other audio source, and at the point where you wish to begin recording, press the ENTER/REC button. Recording will begin.

If the recording mode is "JAM," recording will begin after two measures of playback.

If, after recording, you want to change the recording mode or recording time, press the

PHRASE TRAINER button while playback is paused.

The recorded content will be lost when the power is turned off.

2.Recording

When you begin recording, the recording time will be indicated as a numerical value and by a value graph.

Recording

time display

When you want to stop recording, press the ENTER/REC button or the []. Recording will stop, and loop playback will begin automatically. If you do not stop recording, recording will continue until the selected recording time has elapsed, and loop playback will begin automatically.

If the recording mode is "JAM," recording will end automatically at the specified number of measures, and will switch to loop playback.

The phrase will be recorded and played back in mono.

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3.Playback

The recording phrase will playback as a loop. During playback or while paused, you can use the ▲/▼ buttons to select programs.

playback

time display playback speed(%)

Rotating the Value dial toward the left will slow down the playback speed without affecting the pitch.

You can choose from six levels of playback speed: 100%, 90%, 80%, 75%, 66%, and 50%.

During playback, you can press the [ ] button to rewind.

By pressing the PHRASE TRAINER button, you can hold the sound that was being played at the moment you pressed the button (the Hold function). This is convenient when you need to hear individual notes in a phrase.

4.Pause

When you press the [					] button, the playback
will pause. Press the [								] button once again,
and playback will resume.
Pressing the [	] button while playback is

paused will return you to the beginning of the recorded phrase.

If you wish to re-record

To re-record the phrase, press the [

] button

to pause the playback.

Start the CD or other audio source, and press the ENTER/REC button at the beginning of the desired phrase.

If you want to change the recording mode or time, press the PHRASE TRAINER button while paused.

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Before writing

After writing

AUX Pitch mode

In this mode you can transpose the pitch of a CD or other audio source connected to the AUX jack. Press the AUX PITCH button to enter AUX Pitch mode. When you are in this mode, the AUX Pitch icon will light.

Use the Value dial to specify the amount of key transposition. The key can be transposed in a range of +/-1 octave.

The value can be adjusted upward and downward for 3 semitones in 10 cent steps, and in semitone steps (100 cents) for the remainder of the range.

Display of 10 cent units

Display of

100 cent units AUX Pitch icon

The output will be mono in AUX Pitch mode.

The AUX Pitch setting is remembered even when the power is turned off.

Edit mode

In this mode you can turn each effect on/off, and edit the effect type, parameter values, and program name.

In Play mode, press the √ (or ®) button to access the DYNA effect edit screen, entering Edit mode.

In any screen of Edit mode, you can use the control knobs to edit Amp modeling, or use the TAP button to set the delay time of Delay modeling. Press the EXIT button to return

to Play mode.

If a program was not written after it was edited, the decimal point of the program number will light.

The edited settings will return to the settings of the original program if you switch programs or turn off the power without Writing (see p.26).

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1.Select the effect that you wish to edit

Each time you press an √/® buttons, you will cycle through the effects in the order shown below. When an effect is selected, its icon will blink.

1) DYNA (Dynamics & Pick up Modeling)

These are dynamics-type effects such as compressor and auto-wah that modify the tone, and pickup modeling effects.

On,	Parameter
Off	value
	Type selection

2.Editing each effect

For each effect, you can select the effect type and set its parameter values.

Effects that are turned "OFF" will automatically be turned on if you press the ENTER/REC button or use the ▲/▼ buttons to select the effect type.

For details on the effect types and parameters, refer to Effect Parameters (p.29). Renaming the program, infrared transmitter settings, and writing the program are also performed here.

2) AMP (Amp Modeling)

This models a guitar amp (15 different types).

Amount of distortion*Volume* High range* Low range*

On,	Mid range*
Off

Type selection

*Operation will be different if SYNTH is selected as the type.

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The amp type selected by the amp modeling selector can be selected and edited even without entering Edit mode.

The VOLUME control knob can be used to adjust the VOLUME even when the amp modeling effect is "OFF."

3) CAB (Cabinet Modeling)

This simulates the acoustical characteristics of the guitar amp’s cabinet.

This is especially effective when you are not using an amp (e.g., when using headphones, or when connecting to a mixer, hard-disk recorder, or audio device).

On,	Presence
Off
	Type selection

4) MOD (Modulation & Filter Effect Modeling)

These are modulation and filter-type effects such as chorus, flanger, phaser, and pitch shifter.

On,	Parameter
Off	value
	Type selection

5) DLY (Delay Modeling)

These are spatial-type effects for which you can set the delay time by the interval at which you press the TAP button.

On,

Off

Delay

time

Effect

level

Type selection

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6) REV (Reverb Modeling)

These are spatial-type effects that add spaciousness to the sound.

On,	Effect
Off	level
	Type selection

7) NR (noise reduction)

Use the Value dial to adjust the depth of the noise reduction that is applied.

If the NR value is raised excessively, the sound may be cut off prematurely, depending on the device that is connected. If this occurs, reduce the value.

Adjust the NR level as suitable for your guitar or pickup.

8) RENAME

Here you can specify a name for each program. The following characters can be used: space, 0– 9, A–Z, “, ‘, , +, -, /.

Adjust the

depth of noise reduction

Increasing this value will produce more noise reduction. Normally you will adjust this so that you do not hear obtrusive noise when the strings are lightly muted.

Select the character

Select the character location

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Program number that currently occupies the writing destination

9) TX (Infrared transmitter)

Use the ENTER/REC button to turn the infrared transmitter on/off.

On,

Off

Infrared transmitter icon

The infrared transmitter setting is common to all programs, and is remembered even when the power is turned off.

Use the infrared transmitter within a visually unobstructed range of 4 meters or less.

If the infrared transmitter is left on, the battery life will be shorter. If you are not using the infrared transmitter, you should turn it off.

10) WRITE

Here you can write (store) a program that you created.

Use the Value dial to select the writing destina-

tion (User programs only). When you do so, the name of the program that currently occupies the writing destination will be displayed briefly.

If you decide not to write, press the √ (or ®) button to select a different screen.

When you press the ENTER/REC button, the edited program will be written into memory. When the program has been written, the LCD will indicate “COMPLT” for approximately one second.

Write

Select a user program number as the writing destination

Before writing an edited program into a different program number, be sure that you do not mind overwriting the data that is currently in that program number. The program data that is overwritten will be lost.

It is not possible to write to a preset program.

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3.Reloading the factory programs

While holding down the RHYTHM button and the ▲ button, turn on the power. The LCD will ask “RELOAD?”

If you press the ENTER/REC button, the facto- ry-set programs will be re-loaded into the user program area. The display will indicate “RELOAD”, “VERIFY”, “COMPLT” for a short time, and then the power-on screen will appear.

Never turn off the power during the reload operation.

If you decide not to reload the factory programs, press the EXIT button. The factory programs will not be reloaded; the normal power-on screen will appear, and the PX4 will be in Play mode.

Be aware that if you reload the factory-set programs, the user programs and any settings that are remembered when the power is turned off (master level, infrared transmitter, etc.) will all be rewritten.

Troubleshooting

If the PX4 does not operate as you expect, please check the following points first. If this does not resolve the problem, contact your dealer.

1.Power does not turn on.

•Are batteries installed? Alternatively, is the correct AC adapter connected to an AC outlet?

2.No sound

•Are your guitar, amp and headphones connected to the correct jacks?

•Is your amp turned on and set correctly?

•Are any cables broken?

•Is the master level of the PX4 set to “0” or to a low level?

•The VOLUME control knob may have been turned down.

•Is the PX4 muted?

Be aware that if all effects are off, the chain display will disappear, and it will not be possible to distinguish Bypass or Mute from the LCD display.

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• Is the volume of your guitar turned down?

3.When using the infrared transmitter, there is no sound or the sound is distorted.

•Is the infrared transmitter turned on?

•Are the PX4 and the headphones within a visually unobstructed range of 4 meters or less?

•The PX4's transmitter may be obstructed.

•Is the power of your infrared wireless headphones turned on?

In some cases, the output sound may be distorted because of the settings of the program. (Adjust the master level and/or program level.)

4.The volume from the device connected to the AUX jack is too loud or too soft, or cannot be heard.

•Adjust the output level of the connected device.

Make connections to the headphone jack of the device, instead of to its line output.

•Are you in Phrase Trainer mode?

Exit Phrase Trainer mode.

•Are you using a connection cable with a builtin resistor?

5.Effects do not apply

•Is the PX4 bypassed? (the effect chain will be blinking)

•Are the effects used in the program turned on?

6.Tuner does not work.

• Is the PX4 bypassed or muted?

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Effect Parameter

DYNA (Dynamics & Pickup modeling)

	TYPE (π/† button)	VALUE (Value Dial)
COMP	This compressor produces consistent levels and sustain.	Adjusts sensitivity.(1.0...10.0)
DYNAEXC	This effect dynamically applies an exciter according to your	Adjusts sensitivity.
	picking strength. (This is especially effective when you want	(0...10.0)
	to give more sparkle to clean sounds.)
VOX WAH	Models a VOX V847 wah pedal	Adjusts location of a pedal (1.0...10.0)
WAHUP1	Positive-polarity auto-wah that responds sensitively to attacks	Adjusts sensitivity.
WAHUP2	Positive-polarity auto-wah that responds smoothly to attacks	(0...10.0)
WAHDWN1	Negative-polarity auto-wah that responds sensitively to attacks
WAHDWN2	Negative-polarity auto-wah that responds smoothly to attacks
SLOWATK	Smoothes the attack of a guitar to create a violin-like effect.	Specify the attack speed
		(1.0...10.0)
OCTAVE	This generates a pitch one octave lower than the original
	sound, and mixes it with the original sound to add a sense	Adjusts effect level.
	of depth and low end.This effect may not operate correctly	(0...10.0)
	if two or more strings are played simultaneously, or when
	low-pitched strings are played.
RING	An effect that produces bell-like sounds. (For the cleanest	Specify the frequency
	effect, use the neck pickup, turn down the tone control of	(1.0...10.0)
	your guitar, and play near the 12th fret.)

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	TYPE (π/† button)	VALUE (Value Dial)
RINGUP	A ring modulator in which the effect changes dynamically	Adjusts sensitivity.
RINGDWN	depending on your picking strength.	(0...10.0)
AC SIM	This is an effect model that converts the sound of an
	electric guitar to that of an acoustic guitar.
HUM SGL	Pickup modeling that transforms the sound of a humbucking
	pickup into the sound of a single-coil pickup.
SGL HUM	Pickup modeling that transforms the sound of a single-coil	Adjusts tone (0...10.0)
	pickup into the sound of a humbucking pickup.
HF TONE	Pickup modeling that simulates the "half-tone" position
	between two pickups.
PHASOUT	Pickup modeling that simulates the "out of phase" sound
	when two pickups are connected out of phase.

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