Lo Size; Lo Trem; Hi Gain; Hi Rate - Kurzweil K2661 Musician’s Reference Manual

Lo Size

The effective size (radius of rotation) of the rotating woofer in millimeters. Affects the
amount of Doppler shift or vibrato of the low frequency signal.

Lo Trem

Controls the depth of tremolo of the low frequency signal. Expressed as a percentage of
full scale tremolo.

Hi Gain

The gain or amplitude of the signal passing through the rotating tweeter (high frequency)
driver.

Hi Rate

The speed of the tweeter rotation.
Hi Size The effective size (radius of rotation) of the rotating tweeter in millimeters. Affects the
amount of Doppler shift or vibrato of the high frequency signal.
Hi Trem Controls the depth of tremolo of the high frequency signal. Expressed as a percentage of
full scale tremolo.
Hi Beam W The rotating speaker effect models a rotating horn for the high frequency driver. The
acoustic radiation pattern of a horn tends to be a narrow 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 horn is
omnidirectional (radiates in all directions equally).
Mic Pos The angle of the virtual microphones in degrees from the "front" of the rotating speaker.
This parameter is not well suited to modulation because adjustments to it result in large
sample skips (audible as clicks when signal is passing through the effect). There are two
pairs of microphones (A and B) for high and low frequency drivers.
Mic Lvl The level of the virtual microphone signal being sent to the output. There are two pairs of
microphones (A and B) for high and low frequency drivers.
Mic Pan Left-right panning of the virtual microphone signals. A setting of -100% is panned fully
left, and 100% is panned fully right. There are four of these parameters to include two
pairs (A and B) for high and low frequency drivers.
LoResonate A simulation of cabinet resonant modes expressed as a percentage. For realism, you
should use very low settings. This is for the low frequency signal path.
Lo Res Dly The number of samples of delay in the resonator circuit in addition to the rotation
excursion delay. This is for the low frequency signal path.
LoResXcurs The number of samples of delay to sweep through the resonator at the rotation rate of the
rotating speaker. This is for the low frequency signal path.
HiResonate A simulation of cabinet resonant modes expressed as a percentage. For realism, you
should use very low settings. This is for the high frequency signal path.
Hi Res Dly The number of samples of delay in the resonator circuit in addition to the rotation
excursion delay. This is for the high frequency signal path.
HiResXcurs The number of samples of delay to sweep through the resonator at the rotation rate of the
rotating speaker. This is for the high frequency signal path.
ResH/LPhs This parameter 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.
KDFX Reference
KDFX Algorithm Specifications
10-129