Kurzweil Forte Manual page 211

The Effects Chain Editor
Effects Parameters
Xover (Crossover) is the frequency at which high and low frequency bands are split and sent
to separate rotating drivers. The range is 16 to 25088 Hz.
Lo Gain and Hi Gain are the gains of the signal passing through the rotating woofer or
tweeter, respectively. The range is Off/-79.0 to 24.0 dB.
Lo Size and Hi Size are the effective sizes (radius of rotation) of the rotating speakers in
millimeters. This affects the amount of Doppler shift or vibrato of the low frequency signal.
The range is 0 to 250 mm.
Lo Trem and Hi Trem control the depth of tremolo (amplitude modulation) of the signals. It
is expressed as a percentage of full scale tremolo. The range is 0 to 100%.
LoResonate and HiResonate are simulations of cabinet resonant modes expressed as a
percentage. For realism, you should use very low settings. The range is 0 to 100%.
Lo Res Dly and Hi Res Dly are the number of samples of delay in each resonator circuit in
addition to the rotation excursion delay. The range is 10 to 2550 samples.
LoResXcurs and HiResXcurs are the number of samples of delay to sweep through the
resonator at the rotation rate of each rotating speaker. The range is 0 to 510 samples.
ResH/LPhs sets the relative phases of the high and low resonators. The angle value in degrees
is somewhat arbitrary and you can expect the effect of this parameter to be rather subtle. The
range is 0 to 360.0 degrees.
Mic Angle is the angle of the virtual microphones in degrees from the "front" of the rotating
speaker. For the left microphone the angle increases clockwise (when viewed from the top),
while for the right microphone the angle increases counter-clockwise. Assigning a MOD to
this parameter should be done with caution: real-time adjustments to it will result in large
sample skips, which will cause clicks in the signal passing through. The range is 0 to 360.0
degrees. (In Distort + Rotary only.)
The following parameters relate to rotation speed:
Speed sets the rotating speakers to run at either the slow rate or the fast rate. Brake, when set
to "On", slows the rotating speakers to a halt.
Lo Mode, in the "Normal" setting, will give you full control of the low frequency speaker
with the Speed parameter. The "NoAccel" setting will hold the low frequency speaker at the
slow speed, and the Speed parameter will have no effect on its speed, though Brake will still
work. In the "Stopped" position, the low frequency speaker will not spin at all.
Lo Slow and Hi Slow are the rotation rates in hertz (Hz) of the speakers when Speed is set to
"Slow."
Lo Fast and Hi Fast are the rotation rate in hertz (Hz) of the speakers when Speed is set to
"Fast." LoSlow>Fst and HiSlow>Fst are the times for the speakers to accelerate from the slow
speed to LoFst>Slow and HiFst>Slow are the times for the speaker to decelerate from the fast
speed to the slow speed.
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