User manual

Table Of Contents
44
The Tune Button
Sequential
The Tune Button
The tune button runs an auto-calibration procedure on the Prophet-10,
tuning its oscillators, lters, and other components. Use this calibration
procedure as needed over the rst few days of use. The Prophet-10 learns
the range of temperatures at your location and will keep itself in tune
over this range.
Later, if you use the Prophet-10 in a different environment that is
measurably warmer or cooler (on stage, in an air-conditioned studio, and
so on) run the calibration procedure again.
Please be aware that it’s possible for the Prophet-10’s oscillators and
lter to be in tune with themselves but for the synthesizer to not be tuned
to concert pitch. Master tuning of the synth is controlled by the master
tune knob. See page 42 for details.
To calibrate the oscillators and lters:
1. Press the tune button.
2. The program select button LEDs begin ashing in sequence and the
numeric display indicates the tuning sequence while the Prophet-10
performs its auto-calibration procedure. Don’t turn off the power while
it’s doing this.
3. When nished, the front panel controls return to normal and you can
play the Prophet-10.