Ok, I think you've pointed right: the DCA BAL adjustements make the 'plop' change but, only in it's frequency: when I move a trim, the plop appears more or less often.

I've tried using the Testsound A6 described by Murray. I've also tried to adjust all the DCA BAL trims but it doesn't work for me.

I think I'd need to replace the Kiwi upgrade with the original eprom and calibrate properly the synth.

I can't do this myself (can't figure how to remove the upgrade from the socket without breaking it), so I'll bring the 3p to the repair guy (again..).

Thanks again Florian,
Fred

--- In kiwitechnics@yahoogroups.com , "poiskaill" <poiskaill@...> wrote:
>
> Hi Florian,
>
> Thanks a lot it helps a lot !!
>
> I'll check it tomorrow morning.
>
> Best regards,
> Fred
>
> --- In kiwitechnics@yahoogroups.com , Florian Anwander <fanwander@> wrote:
> >
> > Hello,
> >
> > Sounds to me like typical fast attack on low volume signals or on a
> > misaligned VCA (to be honest: it reminds me the VCA I built once, which
> > missed a DC-Balance trimmer...).
> >
> > But I have to admit, that I cannot reproduce it on my Kiwi3P. To me it
> > is noticable, that the plopp is not on every note. I cannot judge
> > whether it is on a dedicated voice. You should switch on the voice
> > Display (Global B-13 = 1), and check whether the plopp appears on a
> > dedicated voice
> >
> > Maybe the DC-Balance setting for the VCA of this voice is misaligned. It
> > is the Trimmer 101/201/301.../601. Simply set it for a minimal 'plopp'
> > (the service manual says "Adjust VR101 on Main board for the minimum
> > transient or thump when a key is depressed").
> >
> > I hope that helps.
> >
> > Florian
> >
> >
> > poiskaill wrote:
> > > Edit: The weird freq dissapear if i get the attack at 20 or 30%.
> > >
> > >
> > > --- In kiwitechnics@yahoogroups.com , "poiskaill"<poiskaill@> wrote:
> > >>
> > >> Hi,
> > >>
> > >> I've noticed something really bad on my upgraded 3p.
> > >> There's a 'plop' appearing on the sounds. Not always on the same notes, not the same voice. The sound is like a bass freq.
> > >>
> > >> I don't know if the upgrade is the problem or if my synth is in a bad shape.
> > >>
> > >> Listen and tell me what you think:
> > >> http://soundcloud.com/synth33/jx3psick
> > >> You'll hear better by the 2nd half of the file.
> > >>
> > >> Best regards,
> > >> Thanks
> > >>
> > >
> > >
> > >
> > >
> > > ------------------------------------
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> > >
> > >
> > >
> > >
> >
>