Korg PA3 Manuel D’Utilisation

Chorus, Flanger, and Phaser (Cho/Fln Phaser)

This effect adds thickness and warmth to the sound by modulat-
ing the delay time of the input signal. You can add spread to the
sound by offsetting the phase of the left and right LFOs from
each other.

Setting the left and right delay time individually allows you to
control the stereo image.

This  models  a  famous  chorus  unit  that  was  built  into  a  guitar
amp.  Although  it  does  not  provide  a  chorus  and  vibrato  select
switch, you can use the “Wet/Dry” and “Bus” settings to produce
their effect. The “Speed,” “Depth,” and “Manual” parameters
allow an even wider range of sounds than the original unit.

For the master effects, “Wet/Dry” adjusts the output level of the
effect sound.

When “Output Mode” is Mono, L and R will output the same
vibrato effect. Normally, you’ll produce a chorus effect by adjust-
ing the return level to mix the processed sound with the direct
sound. If you turn “Bus” Off and adjust the settings so that none
of the direct sound is mixed in, a vibrato effect will be produced.

If  “Output  Mode”  is  ST  (L-D&R-W),  the  direct  sound  will  be
panned to L, and the effect sound will be panned to R for output.
Normally, you’ll mix the direct sound and effect sound by
adjusting the return level, applying chorus only to the R channel,
and producing a stereo effect that’s spread to the left and right. If
you turn “Bus” Off, pan the direct sound and effect sound to the
left and right, and output them from stereo speakers, the effect
sound and direct sound will be panned in stereo, producing a
clear and spacious chorus effect.

a

LFO Waveform Triangle, Sine

Selects the LFO Waveform

LFO Phase 
[degree]

–180...+180

Sets the LFO phase difference 
between the left and right

b

LFO Frequency 
[Hz]

0.02...20.00

Sets the speed of the LFO

Src

Off...Tempo

Selects a modulation source for LFO 
speed

Amt

–20.00...
+20.00

Sets the modulation amount of LFO 
speed

c

MIDI Sync

Off, On 

When this is on, the LFO speed is set 
by BPM, Base Note, and Times, 
instead of Frequency

BPM

MIDI, 
40.00...
300.00

MIDI syncs to the system tempo; 40–
300 sets the tempo manually for this 
individual effect

Base Note

r...w

Selects the type of notes that 
specify the LFO speed

Times

x1...x32

Sets the number of notes that 
specify the LFO speed

d

L Pre Delay 
[msec]

0.0...50.0

Sets the delay time for the left 
channel

R Pre Delay 
[msec]

0.0...50.0

Sets the delay time for the right 
channel

e

Depth

0...100

Sets the depth of LFO modulation

Src

Off...Tempo

Selects the modulation source for 
the LFO modulation depth

Amt

–100...+100

Sets the modulation amount of the 
LFO modulation depth

f

EQ Trim

0...100

Sets the EQ input level

g

Pre LEQ Fc

Low, 
Mid-Low

Selects the cutoff frequency (low or 
mid-low) of the low-range equalizer

Pre HEQ Fc

High, 
Mid-High

Selects the cutoff frequency (high or 
mid-high) of the high-range 
equalizer

h

Pre LEQ Gain 
[dB]

–15.0...+15.0

Gain of the Low EQ

Pre HEQ Gain 
[dB]

–15.0...+15.0

Gain of the High EQ

i

Wet/Dry

-Wet, -
1:99...Dry...99:1
, Wet

Balance between the wet and dry 
signal

Src

Off...Tempo

Amt

–100...+100

Amount of modulation source

Speed [Hz]

0.10...10.0

Sets the speed of LFO

Depth

0...100

Sets the modulation depth

Manual

1...100

Sets the sweep frequency

Output Mode

0, 1

Sets the outpu mode
0: Mono
1: ST (L-D& R-W)

Wet/Dry

Dry, 1:99 ... 
99:1, Wet

Balance between the wet and dry signal

Source

Off...Tempo

Amount

–100 ... +100

+