Kurzweil PC2KBD Musician's Manual page 29

KB3 Mode
Press the KB3 Mode button twice to enter KB3 mode; the display changes to something like this:
Bank ID Program ID
4:000|KB3|Template|
L:888888888|CV:Chor1
Drawbar Drawbar values
type (one digit for
each harmonic
wavelength)
YouÕll Þnd KB3-mode programs in banks with IDs 4Ð7. Unlike Internal-Voices programs and
setups, they donÕt display a bank entry.
KB3 programs use tone-wheel synthesis to produce sound. When you select a KB3 program (or
a setup that contains one), the tone wheels start up and run constantly while the program is in
use. This requires quite a bit of processing, and consequently has an effect on the polyphony
available for other programs. KB3 programs use 44 of the PC2Õs 64 available voices, so when you
use a KB3 program in a setup, you have 20 voices of polyphony available for the remaining
programs in the setup.
Because of the special processing requirements of KB3 programs, you can play only one KB3
program at a time, whether in Internal Voices mode or in MIDI Setups mode. ThereÕs a
parameter in the Global menu called KB3 MIDI Chan, which speciÞes which MIDI channel is
available for playing KB3 programs. You canÕt play KB3 programs on any other channel. This is
important to note if youÕre playing the PC2 from an external sequencer. In this case, make sure
that the sequencer selects KB3 programs only on the KB3 channel; otherwise, the KB3 program
wonÕt play.
KB3 programs have nine adjustable drawbar settings, with harmonic wavelengths ranging from
1 to 16 feet. You can change the drawbar settings using the drawbar controls: Sliders AÐD and
the Mod Wheel. HereÕs how it works:
When the LED in the Drawbar Toggle button is off, Sliders AÐD represent drawbars 1Ð4 (the
four longestÑor lowest-pitchedÑharmonic wavelengths). Press the Drawbar Toggle button,
and its LED lights. The sliders then represent drawbars 5Ð8 (shorter, higher-pitched
wavelengths). The Mod Wheel always represents drawbar 9, the shortest wavelength,
regardless of the status of the Drawbar Toggle button.
There are nine digits in the bottom line of the display that show the current drawbar values.
From left to right, they correspond to drawbars 1Ð9. Moving one of the drawbars changes the
corresponding drawbar values, and changes the nature of the organ sound.
Try it out. Make sure youÕre in KB3 mode, then move one of the sliders. YouÕll see one of the
values on the bottom line change. Moving a slider all the way down is equivalent to pulling out
the drawbar on a real organ. The corresponding value is 8. Conversely, pushing the slider up is
equivalent to pushing the drawbar in, with a corresponding value of 0. For drawbar 9, pulling
the Mod Wheel down (the off position) corresponds to pushing the drawbar in, and pushing it
up corresponds to pulling the drawbar out.
To the left of the drawbar values, thereÕs a letter (either P or L) that indicates whether the
program has preset or ÒliveÓ drawbar values. A program with preset drawbars always starts
with the same factory-set drawbar values when you select the program. Moving the drawbar
controls changes their values temporarily, but the next time you select that program, the
Program name
Chorus/Vibrato setting
Performance Features
The Front Panel
3-7