Kurzweil K2500 - RELEASE NOTES V2.5 Release Note page 10

EditProg:MISC
EditProg:MISC
PreampResp
Set this parameter "On" or "Off" to enable or disable the preamp+expression pedal part of the KB3 model.
Turning this "On" (the default) makes KB3 programs function like stock organs. The expression pedal in this
case is more than a volume pedal; it actually functions like a "loudness control", varying the frequency
response to compensate for the ear's sensitivity at different volumes. In addition, the preamp provides a de-
emphasis curve to compensate for the built-in tone wheel volume pre-emphasis. Turning preamp response
"Off" emulates organs that have been modified to have a direct out (before the preamp and expression pedal).
Leakage
Controls the level of the simulated crosstalk and signal "bleed" of adjacent tone wheels in the model. This is
provided to help "dirty up" the sound to make it a bit more realistic. A setting of -96 dB gives the purest tones;
other values add more simulated leakage. This level is scaled by the drawbar levels, as well as the expression
pedal level.
LeakMode
Selects between different leakage models, determining which leakage harmonics are emphasized. "TypeA"
provides an overall tone wheel leakage, with all tone wheels leaking a small amount. "TypeX", "TypeY", and
"TypeZ" emulate different degrees of drawbar leakage, where the leakage components correspond to the nine
drawbars, instead of all the tone wheels.
SpeedCtl
Select either "Fast" or "Slow" to choose the speed of the rotary speaker emulation. KB3 Mode does not directly
provide a rotating speaker simulation; by default it uses the internal K2500 effects processor. (The KDFX
option will provide comprehensive effects capabilities.) The SpeedCtl parameter allows control of either an
external or K2500-generated rotating speaker simulation. On selection of a KB3 program, the value of this
parameter is used to generate a MIDI control (locally and to external MIDI) which can be patched to perform
the desired effect. The control values used are 0 = Slow, and 127 = Fast. The controller number used for this
feature is 68. You can toggle between fast and slow speed using button 1 on the front panel of K2500
keyboards.
VibChorCtl
Choose "On" or "Off" to turn on or off either vibrato or chorus (as selected in the VibChorSel parameter, also
on this page). KB3 Mode does not directly provide a chorus/vibrato simulation; by default it uses the internal
K2500 effects processor. (The KDFX option will provide comprehensive effects capabilities.) The VibChorCtl
parameter allows control of either an external or K2500-generated chorus/vibrato simulation. On selection of a
KB3 program, the value of this parameter is used to generate a MIDI control (locally and to external MIDI)
which can be patched to perform the desired effect. The control values used are 0 = Off, and 127 = On. The
controller number used for this feature is 95. Use button 2 on the front panel of K2500 keyboards to toggle
between on and off.
VibChorSel
Choose the vibrato or chorus program (there are three of each) you wish to use with this KB3 program. Note
that you must set VibChorCtl (also on the MISC page) to "On" to hear the effect. On selection of a KB3
program, the value of this parameter is used to generate a MIDI control (locally and to external MIDI) which
can be patched to perform the desired vibrato or chorus effect. The control values used are 0 = Vib1, 36 = Vib2,
58 = Vib3, 79 = Chor1, 100 = Chor2, 122 = Chor3. The controller number used for this feature is 93. Buttons 3
and 4 on the front panel of K2500 keyboards also lets you select the chorus or vibrato program you want.
910304, Rev. B
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