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HP2
HP1
Range of the HP Filter
Connect a well calibrated V/Oct Source to the HPF
CV
input. Set the LPF &
RES potentiometers fully clockwise. Activate the HPF resonance switch by
pushing it toward the right. The LPF resonance switch must be off and the
HPF potentiometer at noon.
The HP1 trimmer on the diagram below, sets the range of the first highpass
filter. Listen to OUT 1, you should hear the filter auto-oscillate. Play on 3
octaves with your V/Oct Source. While playing on 3 octaves, adjust the HP1
trimmer until the interval you hear is as close as possible to 1 octave between
each note. Do the same procedure using OUT 2 and the HP2 trimmer.
8.1.2
Range adjustment by ears
