After getting P6, I documented some findings and thoughts in regards to the behavior of the tuning and calibration of my unit.
Much of this info has been discussed in fragments over the years on this forum or elsewhere, but I did a good amount of additional testing, as I wanted to really understand how it works, and when I should re-run a new tuning calibration.
So, yeah, here's everything you might have ever wondered about temperature tuning and calibration (and then some
https://www.presetpatch.com/articles/Prophet-6-and-OB-6-Tuning-CalibrationI wonder, has anyone else checked the tuning of Low Pass Filter / Self Oscillating Filter Tuning? The Oscillator Tuning is spot on after calibrating (excellent!), but my unit is consistently about 25-30 cents flat on tuning of self oscillating filter -- over multiple octaves in center of keybed... (based on cutoff knob being quantized to semitones)
Is this just my unit, or do others get this as well? If it's others as well, I wonder if the filter tuning could be slightly adjusted / offset? Or add another global setting like "Master Tune", but just targeting LP Filter offset? (feature request)
Osc Levels: All Off
Res: 95-100%
Cutoff: 72
F.Env: 0
Key Track: Full (or off)
Slop/Vintage: 0