Discussion about the Korg PolySix synthesizer

Yes, thanks! Good catch!

I've updated both the Mouser and Farnell parts lists accordingly.

On Sat, Dec 4, 2010 at 2:26 AM, Andrew Jury <andy@networkjabber.com> wrote:

>
>
> Well spotted! I am just sitting here in front of an original and the
> ceramic
> disk is marked �471� (470pF), so yes, you are right. Jed: Can you change
> the
> parts list on your site? I am imagining that the wrong value capacitor
> would
> quite severely change the shape of the input waveform and this is why you
> have to drive it very hard in order to get a tape load. And I just though
> my
> laptop and the input had an impedance mismatch!
>
> Cheers,
> Andy
>
>
> On 04/12/2010 10:01, "Malte Rogacki" <gacki@gacki.sax.de<gacki%40gacki.sax.de>>
> wrote:
>
> >
> >
> >
> >
> >
> > Hello;
> >
> > I've noticed that I needed to use a very high level to load sounds "From
> > Tape", much higher than with the original boards.
> >
> > C4 is given a 0.047uF ceramic in the parts list; on the original boards
> it
> > is 470pF. Exchanging this cap made loading "From Tape" much easier.
> >
> > The mistake may stem from the service manual which has two caps marked
> C4;
> > the "real" C4 (470pF ceramic) is the one parallel to R5; while the one in
> > series with R28 is C5 (0.047uF plastic film).
> >
> >
> >
> >
> >
>
> [Non-text portions of this message have been removed]
>
>  
>


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