DARK ENERGY II - Additional Technical Information – Page 4
Function of the trimming potentiometers (Dark Energy II Voice Board):
Name Function
Explanation
Factory default
P17
VCO Scale
adjusts the 1V/octave characteristics of the
socket "VCO F" or the bus CV
adjusted to 1.00V/octave
P18
VCO Offset
adjusts the VCO frequency offset
64 Hz @ center position of the VCO
Tune
control and
Range
switch in center
position
P19
VCO Octave
adjusts the upper position of the VCO range
switch (+ 1 octave)
adjusted to +1 octave
P20
VCO Octave Switch -
adjusts the lower position of the VCO range
switch (- 1 octave)
adjusted to -1 octave
P21
VCF Scale
adjusts the 1V/octave characteristics of the
socket "VCF F" or bus CV (if the tracking
switch is in the lower position "full")
adjusted to 1V/octave, VCF in self-
oscillation (
Resonance
control fully CW)
P22
VCF Offset
adjusts the VCF frequency offset
~ 10 Hz @ CCW position of the VCF
Frq
.
control, VCF in self-oscillation (Resonance
control fully CW, all VCF modulations off)
Notes concenring the adjustment of trimming potentiometer P17 (VCO Scale):
The corresponding trimming potentiometer for the 1V/Oct scale is P17. You have to wait about 20 minutes before
you do the readjustment. This is the recommended procedure:
(1) Remove the 4 screws of the bottom plate, but leave the plate at it's position
(i.e. the case is still closed at the bottom)
(2) wait about 20 minutes
(3) remove the bottom plate and the readjust P17 until the scale is correct
(e.g. playing octaves on the controlling keyboard)
(4) add the bottom plate still without installing the screws
(5) wait about 10 minutes and check if the scale is still OK
(6) if yes: mount the bottom plate with the 4 screws
(7) if no: go back to step 3
If you are not able to do the adjustment please return the unit to the dealer where you purchased it for readjustment.
