[A6] Oscillator flaws

[Siro Mateos]

Hi all!

I've discovered what seems a hardware flaw in my A6 oscillators. I'd like to 
hear what

you experience when reproducing this really crankie bug:

On the oscillator of your choice, set up both square and triangle outputs on 
(saw and sine

off), pulse width above 80%, no PWM, and turn sub-oscillator mix to the 
maximum. Now

start playing while you increase square output level from it's 50% default 
level to the max.

Well, here it is... on my unit this setup causes a suddent pitch fall when i 
reach the

maximum square output level, and this flaw is different in magnitude from 
voice to voice.

It turns out that only 4 voices handle this situation flawesly, in fact only 
one voice (no. 2)

stays perfectly in tune... out of 16 voices!!. When I set rotary assignement 
of voices, my

A6 plays sort of an arpeggio when switching from voice to voice, and if I 
try unison all

voices, then emerges a really beautiful and dense 'kind of major' chord from 
only one

keyboard note. Finally, when I try the other oscillator, i find pretty the 
same flaw

magnitude on the same voices!

I've been unable to find more combinations between waveforms outputs in 
which the flaw

manifests. If I turn on sine, or saw, or narrow down pulse width then it 
sweeps to normal

pitch.

Please, post some comments about this.

Thanks!