Roto Inout; Dist Curve; Distwarmth; Distlpfreq - Kurzweil K2661 Musician’s Reference Manual

KDFX Reference
KDFX Algorithm Specifications

Roto InOut

Dist Drive or
Tube Drive

Dist Curve

DistWarmth

DistLPFreq

Cabinet LP
Xover
Gain
Rate
Size
Tremolo
Beam Width
Resonate
Res Dly
Res Xcurs
Res Phs
Lo Gain
Lo Rate
10-128
When set to In the rotary speaker is active; when set to Out the rotary speaker is
bypassed.
Applies a boost to the input signal to overdrive the distortion algorithm. When
overdriven, the distortion algorithm will soft-clip the signal. Since distortion drive will
make your signal very loud, you may have to reduce the Out Gain as the drive is
increased.
Controls the curvature of the distortion. 0% is no curvature (no distortion at all). At 100%,
the curve bends over smoothly and becomes perfectly flat right before it goes into
clipping.
A lowpass filter in the distortion control path. This filter may be used to reduce some of
the harshness of some distortion settings without reducing the bandwidth of the signal.
Controls one-pole lowpass filters in the PolyDistort+EQ (in VC+Dist+HiLoRotr).
Without the lowpass filters, the sound tends to be too bright and raspy. With less
distortion drive, less filtering is needed. If you turn off the distortion curve (set to 0%),
you should turn off the lowpass filter by setting it to the highest frequency.
A lowpass filter to simulate the band-limiting of a speaker cabinet. The filter controls the
upper frequency limit of the output.
The frequency at which high and low frequency bands are split and sent to separate
rotating drivers.
The gain or amplitude of the signal passing through the rotating speaker.
The speed of the speaker rotation.
The effective size (radius of rotation) of the rotating speaker in millimeters. Affects the
amount of Doppler shift or vibrato of signal.
Controls the depth of tremolo of the signal. Expressed as a percentage of full scale
tremolo.
The rotating speaker effect models the acoustic radiation pattern of a speaker ranging
from omnidirectional (radiates in directions in equal amounts) to a wide beam. You may
adjust the beam width from 45° to 360°. If you imagine looking down on the rotating
speaker, the beam angle is the angle between the -6 dB levels of the beam. At 360°, the
speaker is omnidirectional.
A simulation of cabinet resonant modes expressed as a percentage. For realism, you
should use very low settings.
The number of samples of delay in the resonator circuit in addition to the rotation
excursion delay.
The number of samples of delay to sweep through the resonator at the rotation rate of the
rotating speaker.
This parameter sets the relative phases the resonators. The angle value in degrees is
somewhat arbitrary and you can expect the effect of this parameter to be rather subtle.
The gain or amplitude of the signal passing through the rotating woofer (low frequency)
driver.
The speed of the woofer rotation.