Hi Dieter

> I think a good compromise would be a jumper for the tune potentiometer that
> defines the tuning range: ~ +/- 1/2 octave (for customers who prefer the
> octave switches) or ~ +/-5 octaves or even more (for customers who prefer a
> wide range for the tune control).

That is ok, but where to place the rotary switch for multiple octave
switching on the frontpanel

Florian