Kurzweil K2661 Musician’s Reference Manual page 196

KDFX Reference
KDFX Algorithm Specifications
HiResXcurs
ResH/LPhs
10-114
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.
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.