Range Switch Position
Maximum Pot Range Voltage/Interval (V/Oct)
1
0.333V, Major 3
rd
Interval
2
0.4167V, Perfect 4
th
Interval
3
0.583V, Perfect 5
th
Interval
4
0.666V, Minor 6
th
Interval
5
1V, One Octave
6
2V, Two Octaves
7
4V, Four Octaves
8
8V, Eight Octaves
Table 7-1: Standard Range Switch Settings
The configuration of Table 7-1 depicts the “default” operation the chosen values provide
for the Range Switch operation. Positions 1 through 4 were determined during
development to be generally the most “musically” useful intervals for the programming
pots. This, at best is a subjective arrangement – you, as the owner and operator of your
Klee Sequencer, are the final arbiter of what could be considered “musically useful”.
However, before you have a chance to try the intervals, the Klee must be at first built, so
trying to determine what is useful to you is much like putting the cart before the horse.
Fortunately, these values are adjustable using the trim pots. With the standard values,
ranges 1 through 3 are adjustable from 0V through 0.625V. Range 4 is adjustable
through 1.28V with the standard values. Ranges 5 through seven are adjustable through
5V with the standard values, and Range 8 is adjustable through 8.1V. If one changes any
of the divider resistor values for these ranges (R26 through R33), it is possible to exceed
these ranges. The equation is as follows:
10V
R
divider
+ 10K
X 10K
Maximum Range
Figure 7-9: Equation for Voltage Ranges Beyond Standard Values
This will take a bit of examination of the Analogue Board Schematic, page 2. For
example, if you want range 2 to exceed 0.625, a lower value for R27 would be required.
If you select 100K as the value for R27, then range 2 could be calibrated to a voltage
between 0V and 0.9V, for example.
Generally, we feel you’ll find the standard values fit quite well here, and you will likely
not have an interest in altering these values.
What may be a bit more prevalent, however, is the desire to alter the higher ranges,
particularly when using position 8 as a variable value rather than a fixed value. In fact,
most may find that 8V is more voltage than required there. In the case of the fixed 8V
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