> > I'll put then a reference signal of 440 Hz on my A-channel of the scope and
> > the the B-channel will be connected to TP1 then.
> This probably won't help much when you try to tune C6. I suggest using a
> tuner. There are some free software tuners to be found although I can't say
> anything about their quality (I'm using a hardware tuner myself).
You're completely right, I mixed up de freq's.
But I think I got the picture now.
I found a software tuner, and connected the Polysix to the computer, and tuned the oscillators.
It's much more accurate then with the scope I found out.
All but 1 oscillator is in 0,2 cent now.
That one oscillator could not be tuned high enough, because the pot was at max or min. So I think I'll have to check out the other parts in that oscillator.
Learned a lot again this evening :-)
In a few day's I can continue.