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Re: [Doepfer_a100] RE: Newbie question about A-190-1 and A-145

2013-11-14 by Nicholas Keller

Thanks Florian (and thanks again for the SPV-355 info!)

I will look into changing the caps, but the mod I was referring to was the "External Input to Comparator" that I posted here a week or two ago, which I did to access the comparators in both the A-199 and A-142.  

But as Dieter pointed out, the more I considered this patch, the less I believed it would work.  The AND output would be a gate stream at audio rate, rather than a held-high gate.  If Dieter's future "gate delay" module could be adapted to delay based on the FIRST zero crossing ONLY, that might work, but I wouldn't know how to design such a circuit.  

Dieter, would the signal based on CV changes be similar to the Gate Out on the A-156?

Nick

Sent from the future

> On Nov 14, 2013, at 8:39 AM, Florian Anwander <fanwander@mnet-online.de> wrote:
> 
> Hello Nick
> 
> Am 14.11.2013 13:47, schrieb Nicholas Keller:
> > Rats. Now I really wish I had an A-164 to try this instead of my
> > positive-only, modified A-119/142s.
> >
> > If hard sync resets the VCO to the lowest point, and my threshold is at
> > 0V, maybe it will still work for me.
> Since you have modified modules you seem to be able to solder.
> 
> If you want to avoid clicking with the A-142 at low frequencies, then 
> simply increase the capacitor
> If it is an A-142(-1) I suggest to add a 47nf cap to the existing cap
> If it is an A-142-4 I suggest to add a 100nF cap to the existing cap
> See
> http://www.doepfer.de/DIY/a100_capacitors.htm
> 
> I have a A-142-4 and have the lower two envelopes with larger caps then 
> the upper two envelopes
> 
> Florian
>

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