Kurzweil K2500 - PERFORMANCE GUIDE REV F PART NUMBER 910251 CHAP 6 Manual page 34

Program Mode and the Program Editor
Program Editor—LFO Page
Program Editor—LFO Page
These are low-frequency oscillators. You'll use the LFO page to define the behavior of the two
LFOs available to each layer. LFOs are periodic (repeating) control sources. The basic elements
are the rate and shape, which define how frequently the LFO repeats, and the waveform of the
modulation signal it generates.
With the K2500, you can set upper and lower limits on each LFO's rate, and assign a control
source to change the LFO's rate in realtime, if you wish.
Because of its periodic nature, the LFO is perfect for creating effects like vibrato (cyclic variation
in pitch) and tremolo (cyclic variation in amplitude). When you're editing LFOs, or any control
source, remember that it must be assigned to control some parameter before you'll hear the
effects of your edits.
LFO1 is always local, meaning that it's triggered with each Note On event, and runs
independently for each note in the layer. LFO2 is local by default, but can be made global. This
is done on the COMMON page, by setting the Globals parameter to On, which causes LFO2,
ASR2, FUN2 and FUN4 all to become global. Global controls uniformly affect every note in
each layer.
EditProg:LFO|||||||||||||||<>Layer:1/1||
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||||||MnRate:MxRate:RateCt:Shape:|Phase:
LFO1:||2.00H||0.00H|OFF||||Sine|||Odeg||
LFO2:||OFF||||0.00H|OFF||||Sine|||Odeg||
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<more||LFO||||ASR||||FUN||||VTRIG||more>
The top line of this page gives the usual mode reminder and tells you which layer you're
looking at. There are five parameters for each of the LFOs.
PARAMETER
MINIMUM RATE
MAXIMUM RATE
RATE CONTROL
LFO SHAPE
LFO START PHASE
Minimum Rate
This is the slowest rate at which the LFO will run. When its Rate control is set to OFF, or when
the control source assigned to it is at its minimum, the LFO runs at its minimum rate.
Maximum Rate
This is the fastest possible rate for the LFO. When its Rate control is set to ON, or when the
control source assigned to it is at its maximum, the LFO runs at its maximum rate.
Rate Control
Assign any control source in the list to modulate the LFO's rate between its minimum and
maximum. A continuous control like the Mod Wheel is a natural choice, enabling you to get
just about any rate between min and max. But you can use a switch control too, to get just the
min or max with nothing in between. Assigning MPress as the rate control for an LFO vibrato
6-34
RANGE OF VALUES
0 to 24 Hz
0 to 24 Hz
Control Source list
LFO Shape list (Ref. Guide)
0, 90, 180, 270 degrees
DEFAULT
2.00 (OFF for LFO2)
0.00
OFF
Sine
0