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EXi: CX-3 Tonewheel Organ
CX-3 Overview
The CX-3 is a detailed model of a classic tone-wheel organ,
based on Korg’s ground-breaking CX-3 keyboard.
Its awesome sound starts with perfect tone-wheel phase
coherency, resulting in pure, powerful sounding chords, just
like the real thing. Subtleties such as different tone wheel
types, adjustable overtones, leakage, and noise, along with
detailed key-click modeling, provide unparalleled realism.
Amp modeling, Vibrato/Chorus, and Rotary Speaker effects
are included in the model, so that you don’t need to use any
Insert Effects to re-create most classic organ sounds.
In EX mode, you can introduce additional drawbar and
percussion harmonics, letting you produce new timbres
unavailable on traditional organs.
If you’re familiar with the CX-3 keyboard, you might want
to check out “Changes from the original CX-3” on page 205
for an overview of some of the improvements in the
NAUTILUS CX-3.
CX-3 uses EXi fixed resources
The CX-3 uses EXi fixed resources for the built-in rotary
speaker, amp, vibrato chorus, and so on. These use up a
small amount of processing power, even if you’re not
playing any notes.
Because of this, you can use a maximum of eight CX-3s
simultaneously in a Combination or Song. If other EXis with
fixed resources are in use, the maximum number of CX-3s
will be reduced accordingly. Each EXi in each Program
counts towards the maximum; for instance, a Program with
two CX-3s counts as two, not as one.
On the other hand, once a CX-3 is running, each additional
note you play takes up only a small amount of additional
power—allowing up to 200 notes of polyphony.
For more information, see “CX-3 & other EXi: Limitations
on EXi fixed resources” on page 380.
Unsupported EXi Common parameters
The CX-3 supports most of the EXi Common parameters
except for scales and a number of the voice allocation
options, as detailed below:
• Single Trigger (CX-3 always acts as if this was On)
• Poly Legato
• Mono Legato (simple Mono retrigger mode is
supported, however)
• Mono Mode (Normal or Use Legato Offset)
• Unison, including Number of Voices, Detune, and
Thickness
• Scale, including Type, Key, and Random
EXi 1
EXi 2
CX-3 Structure
Tone Wheels
Upper Mix
Lower Mix
Percussion
Normal Drawbars
EX Drawbars
Normal Drawbars
EX Drawbars
Upper
Lower
Vibrato/Chorus Amp Rotary Speaker
Expression
EXi Program Structure
EectsMixer & EQ
EXi 1
EXi 2
ARP
Common
LFO
Vector
Common
Step Seq
2
Key Track 1Drum Track
2
AMS Mixer 1
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