[sdiy] JH's discrete 2040 clone

[megaohm]

I built an ARP 4 pole low pass that was a copy of the Moog ladder design and
was surprised to find I could mimic pretty closely the sound of my MOTM 440.
There are subtle differences though.

peng

http://home.comcast.net/~peng5002/mainpage.htm




On 12/5/05, Jeff Farr <moogah at gmail.com> wrote:
>
> According the te archives, JH managed to find some of the patents and
> based his circuit around them.  Perhaps he still knows where they
> could be seen?
>
> On 12/5/05, Sean Costello <seancostello2003 at comcast.net> wrote:
> > Does anyone know how closely related the MOTM-440/JH clone is to the
> > original circuit inside the SSM 2040? My impression was that the circuit
> > topology was based on deduction and analysis, but did anyone ever track
> down
> > a schematic? Or were they all destroyed by PMI?
> >
> > Also, can anyone describe the nonlinear effects of the SSM 2040, as to
> how
> > they differ from the Moog ladder? I have my ideas, but would like to see
> if
> > they sync up with other people's ideas.
> >
> > Thanks,
> >
> > Sean Costello
> >
> > P.S. I work at Analog Devices (which acquired the SSM line), and have
> asked
> > around if we have the SSM 2040 schematics, with no results.
> >
> >
>
>
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