Korg NAUTILUS Series Parameter Manual page 197

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Dirty adds a small amount of noise at note-on and note-off,
for a small amount of extra punch. You can also use this if
you're looking to duplicate the gate timbre of the CX-3 and
BX-3.
4–1c: Amp/VC/Rotary mode
Amp/VC/Rotary mode
This parameter, new in NAUTILUS system version 2.1,
switches between old and new versions of the amplifier,
vibrato/chorus, and rotary speaker effects.
Classic CX-3: These are the same effects you've known and
loved in the original CX-3, and in earlier versions of the
NAUTILUS.
Custom: These are updated and improved versions of the
effects, including the following:
• Custom's amp section uses a new tube model. When
driven into distortion through high Gain or Expression,
Custom's tone is warmer and smoother, with more mid-
range frequencies; Classic CX-3's is more fuzzy and
hard-clipped. Each has its place for different
applications.
• Custom provides a selection of different Speaker
Types, which can have a significant effect on the overall
tone. For more information, see "Speaker Type" on
page 201.
• The Horn Mic Distance is revised, allowing you to get
closer to the speaker without affecting brightness.
• Various other changes have been made to improve the
rotary speaker's stereo sensation, timbre, and
authenticity.
• The Vibrato Chorus has been updated as well, and is now
better-sounding and more true to the original hardware.
Changing a Program from Classic CX-3 to Custom
The responses of the Expression and Amp Gain controls
are different between the two modes. In Custom, greater
amounts of distortion only kick in at the top of the ranges.
Because of this, you'll usually want to turn up the Amp Gain
when converting a sound from Classic CX-3 to Custom,
and adjust the Expression and Output Level as necessary.
To do so:
1. Use Amp Gain to set the maximum distortion amount.
2. Configure Expression as a dynamic control—via a
pedal, for instance.
Expression controls the input volume to the amp section,
affecting both volume and tone.
3. Finally, use the Output Level to adjust the overall
volume as necessary.
Output Level controls the post-amp level, and so it affects
only volume.
For more information, see "Expression Level" on page 188,
"Amp Gain" on page 197, and "Output Level" on page 198.
4–1d: Key Click
Pressing down or releasing a key on a tone wheel organ can
result in arcing between the contacts, producing a
characteristic "Key Click" sound. This section models that
effect.
[Classic CX-3, Custom]
PROGRAM > CX-3: Basic 4–1: Basic
Key-On Click Level
This controls the amount of click noise at note-on.
Key-Off Click Level
This controls the level of the click noise at note-off.
v 4–1: Page Menu Commands
• Compare →p.112
• Write Program →p.112
• Exclusive Solo →p.113
• PAGE →p.126
• MODE →p.126
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