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PolySix Key Tracking / Filter voice issue
KLM366 v1 with daughterboard.
The key tracking voltage is fed into IC23 onthe 366, and output for each voice.
As the key tracking is raised, one outputvoltage doesn’t follow the others. It gets pulled lower the higher the voltageinput so the drop in pitch is very noticeable at a high self-oscillationsetting.
I replaced IC 23 and 24 and checked thesubsequent resistors and caps and the 4558 but no change.
Any ideas ?