[sdiy] Interpolating Scanner

[Benjamín Velasco]

Maybe i should change the question....

How can i use any VCA design for the Scanner instead of the ssm2024?


Maybe someone has built the IS using 3080 or 13600/700 ???

I would really apreciate any helop you could give me. I only know basic
electronics, but i really want to build the scanner....




2006/1/29, Benjamín Velasco <guatis at gmail.com>:
>
> You are right. I remember the ssm2164 linear vca from Charlie Lamm's site.
>
> http://www.charlielamm.com/synth/duallinearvca.php
>
> I'll check it out...
>
> BVO
>
>
> 2006/1/29, phillip m gallo <philgallo at attglobal.net>:
> >
> >
> > SDIY's own Mike Irwin (of phase-mangle'n'Fshifter fame) is the "guy" in
> > question re: linearizing stuff including the SSM2164.
> >
> > p
> >
> > -----Original Message-----
> > From: owner-synth-diy at dropmix.xs4all.nl
> > [mailto:owner-synth-diy at dropmix.xs4all.nl ]On Behalf Of mark verbos
> > Sent: Sunday, January 29, 2006 1:12 PM
> > To: synth diy
> > Subject: Re: [sdiy] Interpolating Scanner
> >
> >
> > Well, since the SSM2164 is an exponential VCA and the SSM2024 is linear,
> > it is far from a drop in replacement. However, a guy name Mike Irwinn I
> > believe figured out a design to use 2 of the VCAs in the package in the
> > control path of the other 2 to get a dual linear VCA out of an SSM2164.
> > So, you could then drop one in for each 2 channel of the IP. As far as I
> > know, it has not been done, but that doesn't mean it couldn't. You
> > probably have to change the output buffer's gain as well, since they are
> >
> > different.
> >
> > Mark
> >
> >
> >
> >
> > Benjamín Velasco wrote:
> >
> > > Hi list!!
> > >  Im planning to build the IS from JH's site but i need some help. JH
> > > used the ssm2024 for the VCAs but that IC is discontinued. Analog now
> > > produces the ssm2164 which isn't a pin to pin replacement. Anybody
> > knows
> > > the mods i have to make to JHs schemo to use the ssm2164 instead of
> > the
> > > ssm2024 ???
> > >
> > > Best regards...
> > >
> > > Benjamín
> >
> >
> > --
> > No virus found in this incoming message.
> > Checked by AVG Free Edition.
> > Version: 7.1.375 / Virus Database: 267.14.23/243 - Release Date: 1/27/06
> >
> >
> >
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://synth-diy.org/pipermail/synth-diy/attachments/20060129/98680e9d/attachment.htm>