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
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.
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.

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.

Keep this manual

After reading this manual, please keep it for later reference.
Interference with other electrical devices
This product contains a microcomputer. Radios and televisions placed nearby may experi-
Keeping foreign matter out of your equipment
Never set any container with liquid in it near this equipment. If liquid gets into the equipment,
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.
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 users authority to operate this equipment.
CE mark for European Harmonized Standards
CE mark which is attached to our companys 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 companys products of Battery operated apparatus means it conforms to EMC Directive (89/336/EEC) and CE mark Directive (93/68/EEC).

Contents

Introduction -------------------------- 6 Main features ----------------------- 6 Turning on the power ------------- 8
Battery Low display --------------------- 8
5.Specifying the function of the Value Dial --------- 15 6.Key Lock function ------------------- 16
Rhythm & Bass mode ----------- 16
1.Rhythm Pattern ---------------------2.Tempo ---------------------------------3.Bass On/Off & Bass Key ---------4. Rhythm & Bass Reverb Level ---Chain Pattern settings ---------------1.Select the recording mode -------2.Recording ----------------------------3.Playback -----------------------------4.Pause ---------------------------------21

Controls and connectors ---------- 8
LCD screen ------------------------------- 10
Making connections ------------- 11 Initial Settings --------------------- 12
Quick Edit ------------------------------- 12
Phrase Trainer mode ------------ 19
Play mode ------------------------- 13
1.Selecting a program ---------------2.Master level -------------------------3.Bypass/Mute ------------------------4.Tuner ----------------------------------13 14
AUX Pitch mode ------------------ 22
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
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
Troubleshooting ------------------- 27

Introduction

Thank you for purchasing the TONEWORKS PANDORA PX4 personal multi-effect processor. In order to enjoy your PANDORA PX4, please read this owners manual carefully and retain it for future reference.
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.

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
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 KORGs 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.

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 alkaline batteries as shown in the illustration. Be sure to insert the batteries observing the correct polarity.
An AC adapter is not included with this product. It must be purchased separately.

Controls and connectors

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.

Amp gain, tone, and volume Program number Set the delay time Input level switch Master level adjustment Program selection

Program name

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-

Amp selection

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).
seconds. The master level is remembered even when the power is turned off.
Master icon Value graph Program number display

Play mode

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

Master level value

1.Selecting a program
You can choose from 50 user programs (U01.U50) and 50 preset programs (P01.P50). Use the L/M 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).
You can also adjust the settings so that the L/M 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.

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
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.

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.
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).
If you select "CHAIN" as the rhythm pattern, there will be more chain pattern settings. (Refer to p.18, "Chain pattern settings")

Rhythm pattern

Bass On/Off and Bass Key

2.Tempo

Set the tempo in the range of 40208 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 =40208.
Chain pattern setting Additional settings when rhythm pattern is "CHAIN"
Rhythm & Bass reverb level
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.

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.

1.Rhythm Pattern

Use the Value dial to select the rhythm pattern (p.40)
Rhythm Pattern Rhythm & Bass mode icon

Chain Pattern settings

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.
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 L/M buttons to specify the bass key of the selected pattern.
4. Rhythm & Bass Reverb Level
Use the Value dial to set the amount of Rhythm & Bass sound that will be sent to reverb modeling.

Pattern location Key

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."
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 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.
Recording mode Phrase Trainer icon

Recording time

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). 32 1, 2, 4, 8 Approximately 7.9 seconds Approximately 15.8 seconds Approximately 31.7 seconds Number of measures
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.

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)

2.Recording

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

Recording time display

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.
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.

3.Playback

The recording phrase will playback as a loop. During playback or while paused, you can use the L/M buttons to select programs.
playback time display playback speed(%)

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.
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.

2) AMP (Amp Modeling)

This models a guitar amp (15 different types).
Amount of distortion* Volume*
High range* Low range* On, Off
Mid range* Type selection
* Operation will be different if SYNTH is selected as the type.
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."
4) MOD (Modulation & Filter Effect Modeling)
These are modulation and filter-type effects such as chorus, flanger, phaser, and pitch shifter.
3) CAB (Cabinet Modeling)
This simulates the acoustical characteristics of the guitar amps 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, Off Presence

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.
Delay time On, Off Effect level T ype selection

6) REV (Reverb Modeling)

These are spatial-type effects that add spaciousness to the sound.
On, Off Effect level T ype selection
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 7) NR (noise reduction)
Use the Value dial to adjust the depth of the noise reduction that is applied. Here you can specify a name for each program. The following characters can be used: space, 0 9, AZ, , , , +, -, /.
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
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.
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.

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?

Effect Parameter

DYNA (Dynamics & Pickup modeling)
COMP DYNAEXC TYPE (/ button) This compressor produces consistent levels and sustain. This effect dynamically applies an exciter according to your picking strength. (This is especially effective when you want to give more sparkle to clean sounds.) Models a VOX V847 wah pedal Positive-polarity auto-wah that responds sensitively to attacks Positive-polarity auto-wah that responds smoothly to attacks Negative-polarity auto-wah that responds sensitively to attacks Negative-polarity auto-wah that responds smoothly to attacks Smoothes the attack of a guitar to create a violin-like effect. This generates a pitch one octave lower than the original sound, and mixes it with the original sound to add a sense of depth and low end.This effect may not operate correctly if two or more strings are played simultaneously, or when low-pitched strings are played. An effect that produces bell-like sounds. (For the cleanest effect, use the neck pickup, turn down the tone control of your guitar, and play near the 12th fret.) VALUE (Value Dial) Adjusts sensitivity.(1.0.10.0) Adjusts sensitivity. (0.10.0) Adjusts location of a pedal (1.0.10.0) Adjusts sensitivity. (0.10.0)
VOX WAH WAHUP1 WAHUP2 WAHDWN1 WAHDWN2 SLOWATK OCTAVE
Specify the attack speed (1.0.10.0) Adjusts effect level. (0.10.0)
Specify the frequency (1.0.10.0)
RINGUP RINGDWN AC SIM HUMSGL SGLHUM HF TONE PHASOUT
TYPE (/ button) A ring modulator in which the effect changes dynamically depending on your picking strength. This is an effect model that converts the sound of an electric guitar to that of an acoustic guitar. Pickup modeling that transforms the sound of a humbucking pickup into the sound of a single-coil pickup. Pickup modeling that transforms the sound of a single-coil pickup into the sound of a humbucking pickup. Pickup modeling that simulates the "half-tone" position between two pickups. Pickup modeling that simulates the "out of phase" sound when two pickups are connected out of phase.

VALUE (Value Dial) Adjusts sensitivity. (0.10.0)

Adjusts tone (0.10.0)

AMP (Amp Modeling)
When using Amp Modeling, the control knobs (GAIN, TREBLE, BASS, VOLUME) and Value dial will both be active. The VOLUME knob can still be used even when Amp Modeling is "OFF." If SYNTH is selected as the type, the control knobs will control oscillator selection, VCF setting, direct level, and synth level respectively. Types marked by an asterisk* can also be selected by the amp modeling selector. In order to take full advantage of the characteristics of Amp Modeling, we recommend that you use it in conjunction with Cabinet Modeling when listening through headphones or when recording from line output.
TYPE (/ button or Amp modeling selecter) Clean channel of a high-end 100 W hand made amp. (recommended CAB: 4x12CLS, 4x12VIN, 4x12MDN) 2x12 combo amp indispensable for country or blues players. (recommended CAB: 2x12BLK) Combo amp covered in tweed cloth. (recommended CAB: 1x12TWD) 4x10 combo amp designed for bass guitar. (recommended CAB: 4x10TWD) VOX AC15 manufactured in 1962. (recommended CAB: 1x12VOX) Brilliant channel of a VOX AC30TB. (recommended CAB: 2x12VOX) VALUE (Value Dial & Control Knobs)
BTQ CLN* BLK2X12* TWD1X12* TWD4X10* AC15* AC30TB*
GAIN -- amount of distortion TREBLE ----------- high range BASS ---------------- low range VOLUME ----- output volume Value dial ---------- mid range (0.10.0)
TYPE (/ button or Amp modeling selecter) UKBLUES* UK-manufactured vintage stack amp head. (recommended CAB: 4x12CLS) UK '80S* UK-manufactured 1983 model 100W head with master volume. (recommended CAB: 4x12CLS, 4x12VIN, 4x12MDN) UK MDN* UK-manufactured 100 W modern amp. (recommended CAB: 4x12VIN, 4x12MDN) RECTO* High-gain amp with eye-catching metal plate. (recommended CAB: 4x12VIN, 4x12MDN) FUZZ* Vintage fuzz. AC30 VOX AC30 modeling. (recommended CAB: 2x12VOX) BTQ OD Overdrive channel of a high-end 100 W hand-made amp. (recommended CAB: 4x12CLS, 4x12VIN, 4x12MDN) UK '70S High treble channel of a UK-manufactured 1969 model 100 W amp head. (recommended CAB: 4x12CLS) US HI-G 1991 model 100 W amp head covered in snake skin. (recommended CAB: 4x12VIN, 4x12MDN) SYNTH Chromatic guitar synth modeling.
VALUE (Value Dial & Control Knobs)

Refer to separate Guitar Synth table
Guitar Synth parameters Oscillator selection: 0.15 (GAIN knob) 0: Sawtooth wave 2 octaves down 1: Sawtooth wave 1 octave down 2: Sine wave 1 octave down 3: Sawtooth wave 4: Sine wave 5: Sawtooth wave 1 octave up 6: Sine wave 1 octave up 7: Sine wave 2 octaves up Oscillators 8.15 are oscillators 0.7 with portamento turned on. Voltage Controlled Filter sensitivity adjustment 0.4.7 is sensitivity adjustment in the positive (+) direction,and 5.0.10.0 is sensitivity adjustment in the negative (-) direction. Set this to 5.0 for a sine wave oscillator. Adjusts the volume of the guitar. Adjusts the volume of the synth. Adjusts the sensitivity of the synth in response to the volume of the guitar Adjust this as appropriate for your guitar or pickup.
VCF setting: 0.10.0 (TREBLE knob)
Direct level: 0.10.0 (BASS knob) Synth level: 0.10.0 (VOLUME knob) Threshold adjustment: 1.0.10.0 (Value dial)
The Guitar Synth is effective only when single notes are played. The desired effect will not be obtained if chords are played. If your instrument is not tuned correctly, the results may not be as you expect. In this case, re-tune your instrument.

CAB (Cabinet modeling)

TYPE(/ button) This model simulates an open back cabinet with one 8-inch speaker. This model simulates an open back cabinet with one 12-inch speaker typically used for blues. This model simulates an American open back cabinet with one 12-inch speaker and a bright tonal character. This model simulates a Vox open back cabinet with one 12-inch Blue speaker. This model simulates an American open back cabinet with two 12-inch speakers. This model simulates a Vox open back cabinet with two 12-inch Blue speakers. This model simulates a modern open back cabinet with two 12-inch speakers. This simulates an open back cabinet with four 10-inch speakers. This simulates a closed back cabinet with four 25W 12-inch speakers. This simulates a closed back cabinet with four 30W 12-inch speakers. This simulates a closed back cabinet with four 75W 12-inch speakers. VALUE (Value Dial)
1X8TWD 1X12TWD 1X12BLK 1X12VOX 2X12BLK 2X12VOX 2X12DC 4X10TWD 4X12CLS 4X12VIN 4X12MDN
PRESENCE: Adjusts tone of the high-frequency range. (0.10.0)

MOD (Modulation & Filter Effect Modeling)
CHORUS1 CHORUS2 FLANG 1, 2, 3 FLANG4 PHASER1 PHASER2 PHASER3 U-VIBE1 U-VIBE2 TREM1 TREM2 TREM3 AT PAN1 AT PAN2 ROTARY1 TYPE (/ button) Vintage chorus in which the effect sound is output to the left and the direct sound to the right Vintage stereo chorus that inverts the phase of the effect sound between left and right, creating more spaciousness. Vintage flanger with a distinctive sound (1, 2, 3 have feedback amounts of 0%, 22%, and 60% respectively) Vintage flanger that inverts the phase of the feedback A popular four-stage vintage phaser A four-stage vintage phaser with a thick mid-range A ten-stage vintage phaser with a mild effect Simulation of a pedal vibe set to chorus mode Simulation of a pedal vibe set to vibrato mode Smooth tremolo Tremolo built into a guitar amp Strong and deep tremolo Auto Pan (LFO:square wave ) Auto Pan (LFO:sine wave ) Rotary speaker simulation VALUE (Value Dial)
Adjusts modulation speed (0.1.10.0 [Hz])
Adjusts modulation speed (1.0.10.0 [Hz])
Adjusts modulation speed (0.1.10.0 [Hz]) Adjusts modulation speed (1.0.10.0 [Hz])
TYPE(/ button) ROTARY2, 3 Rotary speaker simulation in which your playing dynamics switch rotor speeds. 2 switches from slow to fast when you play strongly. 3 switches from slow to fast when you play softly. PITCH1, 2, 3 Pitch shifter (PITCH1, 2, 3 differ in the level of effect sound) Intelligent pitch shifter; a 3rd up in a major key Intelligent pitch shifter; a 3rd down in a major key Intelligent pitch shifter; a 3rd up in a minor key Intelligent pitch shifter; a 3rd down in a minor key Intelligent pitch shifter; a 4th up in a major key Intelligent pitch shifter; a 5th up in a major key Intelligent pitch shifter; a 6th up in a major key An effect that artificially generates feedback, and operates when a note is held for an extended time. 2 generates feedback one octave higher FEEDBK3, 4 An effect that artificially generates feedback, and operates constantly when sustained. 4 generates feedback one octave higher FILTER Low pass filter FILTUP Positive-polarity low-pass filter type auto-wah FILTDWN Negative-polarity low-pass filter type auto-wah MAJ3UP MAJ3DWN MIN3UP MIN3DWN PER4TH PER5TH MAJ6TH FEEDBK1, 2
VALUE(Value Dial) Specify the level at which the speed is switched (1.0.10.0) Amount of pitch shift (-24, -17, -12 -1, -d, d, 112, 19, 24) (d = detune)
Specify the key (C, C#A#, B)
Adjusts effect level (0.4.7) Adjusts vibrato depth (5.0.10.0) Adjusts frequency (1.0.10.0 [Hz]) Adjusts sensitivity (0.10.0)
TALK 1, 2, 3, 4 RANDOM 1, 2, 3, 4
TYPE (/ button) An effect that simulates a "talking guitar" 1:YAH-YAH, 2:U-WAH, 3:YOI-YOI , 4:YEAH Random step filter that moves a filter randomly 1, 2, 3, and 4 change the frequency band affected by the filter
VALUE (Value Dial) Adjusts sensitivity (0.0.10.0) Adjusts modulation speed (1.0.10.0 [Hz])
About the Intelligent Pitch Shifter

EasyStart

PX4 Main Features
Personal Effects processor utilizing Korgs REMS Modeling System, which allows for the most accurate and varied modeling, including 14 of the worlds most coveted guitar amps. 124 effects- 7 at a time (Dynamics, Amp, Cabinet, Modulation, Delay, Reverb and Noise Reduction. Four real-time knobs for easy editing. Pickup modeling- four types available. Feedbacker effect with four modes. Rhythm and Bass patterns (40 patterns) with selectable Bass key. Chain up to 8 different Rhythm and Bass patterns together for songs. Phrase Trainer with up to 32 seconds of loop-able and pitch-adjustable recording time, makes learning licks easy! Rhythms can be recorded with guitar for even more practicing possibilities. 16 Guitar Synth effects. Infrared transmitter for optional wireless headphones.

EasyStart CONTENTS

Getting started Guided Tour of PX4 modes: Using the Tuner Rhythm mode Phrase Trainer mode AUX Pitch mode Write your own Program 4 2

PX4 EasyStart

Getting Started
The PX4 is a Personal Effects Processor that utilizes Korgs REMS (Resonant structure and Electronic circuit Modeling System) technology to model 14 of the most popular guitar amps, as well as giving you first-class effects, all in a portable, compact unit. Features like Rhythm and Bass accompaniment and Phrase Trainer make this a valuable practice tool for guitarists of all skills levels.

Power Connections:

Remove the rear panel battery compartment cover by sliding it in the direction of the. Install the four AAA batteries (included) in the correct positions, and replace the cover.

Audio Connections:

Connect a guitar to the INPUT jack located on the bottom panel of the unit, with a shielded instrument cable. Connect a pair of headphones to the OUTPUT jack. (Or connect a Stereo Y-cable to the OUTPUT jack to use this unit with an external monitoring system or multitrack recorder).

Power up and play:

Move the right panel power switch to ON , or one additional click for power with the backlight option. Raise the volume on your guitar, and on the PX4, use the DIAL to increase the MASTER volume. After adjusting the volume, you can scroll through the programs in the unit by using the and arrow buttons. When you use batteries instead of the optional 4.5 volt AC adaptor, switching the backlight off will increase battery life.

Guided Tour of PX4 Modes

Lets tune!!!
Press the TUNE/BYPASS button. Play a single open string and the display will indicate the name of the note, a meter to fine tune, and calibration (Default is set to 440Hz). The note is in tune when the display icon is in the center of the meter. 2
When tuning, all effects will be bypassed. To tune silently (mute output jack), press and hold the TUNE/BYPASS button for two seconds.
In any mode, pressing the EXIT button will return you to the first page of that mode.

Rhythm mode:

Rhythm mode will allow you to jam along with preset drum and bass patterns. You can select from different styles as well as different keys.

1. 2. 3.

Press the Rhythm button to enter Rhythm mode. The display will indicate a drum set icon, and the name of the rhythm pattern will be displayed. A flashing tempo icon, representing current tempo will also be indicated. Use the DIAL to select the desired rhythm pattern. Set the tempo: There are two methods of setting tempo: a. b. Use the TAP button located on the front of the unit by tapping the button twice to the desired tempo. Access the tempo menu by pressing the arrow button once. Then use the DIAL to adjust the tempo from 40 to 208 bpm.
Set the key of the bass accompaniment: The PX4 will generate a bass part that is appropriate for the rhythm pattern selected. To change the key, use the arrow button to access the Bass Key menu. Here you can use the DIAL to select the desired key. The Bass Key menu cannot be accessed when METRONM is selected.

Once the rhythm pattern, tempo and bass key have been set, use the arrow button to access the REVERB menu. Here you will be able to adjust the amount of reverb on the rhythm pattern by using the DIAL. This will add an element of realism to the rhythm pattern. Use the arrow button once again to access the LEVEL menu. The DIAL will adjust the overall level of the rhythm pattern being played.

Phrase Trainer mode:

This mode will assist you in learning complex parts by sampling music through the AUX input. In total, you can sample in four modes:
AUX input (CD, MiniDisk, DAT, etc.) GUITAR: You can sample your own playing through the GUITAR input AUX and GUITAR: Sample a CD and your guitar together JAM: Sample your guitar with a selected pattern from the RHYTHM mode.
To use the Phrase Trainer:
Press the PHRASE TRAINER button. Here you can select the desired amount of recording time by using the DIAL. The choices are 8, 16, or 32 seconds. 3
PX4 EasyStart To start recording press the ENTER/REC button. Once the specified length of time has passed the unit will automatically loop the recorded segment. To pause the playback press the arrow button and then once again to resume playback. To rewind a segment of the recording press the arrow button. The unit will only rewind as long as you hold down the button. Playback will start when you release the button.

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Press the Phrase Trainer button to scroll through the other modes of the Phrase Trainer.

AUX Pitch mode:

AUX Pitch mode is used to transpose and/or tune an external source (CD, MiniDisk, DAT, etc.) to your guitar. The range is an octave in both directions (up and down) in semitones as well as +4/-4 cents on each semitone.

To AUX Pitch mode:

Make sure your external source is connected to the AUX jack, and is playing. Press the AUX PITCH button. Use the DIAL to select the desired key, and to fine-tune the pitch.

Write your own Program:

Select an amp model with the AMP SELECTOR. Then you can adjust GAIN, TREBLE, BASS and VOLUME with the real time adjustment knobs. You can adjust the MIDDLE with the DIAL, when the AMP block is in edit mode (AMP block will flash).

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Use the arrow button to move through the different menu pages: Dynamics, Amp, Cabinet, Modulation, Delay, Reverb, Noise Reduction, TX (Optional wireless headphones), Name and Write. When one of the menu blocks flashes, use the or arrow buttons to choose an effect. Once an effect is selected, use the DIAL to select the desired amount of each effect. To name and write an edited effect: When the cursor is flashing under a letter of the name, use the DIAL to select a different letter, and the arrow button to move the cursor position. After the last letter has been edited you will see the word WRITE in the display. Use the DIAL to select one of 50 user locations to save your preset to, and then press ENTER/REC. You will see the word COMPLT to confirm that you have saved your Program to the selected location.