tube synth diy

I cant wait i have all the tubes for the ts22 i believe and i have
one of the four band pass filters completed. Id love to put up those
schematics but id have to get permission from eric im sure and he
never publicly relases his schematics i dont belive. I suppose if
you maybe email him a few times you might be able to get something
from him. I just wish all information was free. Heres some
imformation on it


TS-22 is unlike any other "filter" or "filter bank" offered on the
market. It consists of four simple vacuum-tube bandpass filters.
Their center frequencies are offset by 1 octave from the previous
filter. Each filter is independently sweepable with panel knobs; or
they
are all sweepable in unison, using either a panel knob or in
external source of control voltage, such as an envelope generator or
LFO. (A special optoisolator does the job.)

Because these filters do not behave like solid-state filters
or "virtual analog" devices, they sound very different from any
other filter ever offered on the market.

And the TS-22 includes a vacuum-tube pentode voltage-controlled
amplifier (VCA) at its output, optionally usable in conventional VCA
fashion in a modular synthesizer, to impose an envelope loudness
contour on the filter output (using an external envelope generator).
TS-22's CV inputs are 100% compatible with all existing envelope
generators and
other modular-synth circuits.

Thus, the TS-22 constitutes most of the signal processing path of a
classical monophonic analog synth. Only with no transistors in the
path.



OH and the ts 21 is wild i really cant wait to try that one. its a
beutty!!!!.

From this post here:
http://matrixsynth.blogspot.com/2008/01/mean-sucker-vcf.html

It looks like it is designed to run off a +12V/+5V supply, which
makes me think that it could easily be adapted to run off +15V.
Apparently, there are PCB's available, but I don't know how to get
one, because I cannot read Dutch. If anyone can figure it out and
post back to the list, that would be much appreciated.

Thanks :)

The latest version runs on +12V only. It only requires one resistor
change for
it to run on +15V.

I designed a PCB (I'm NOT the one that designed the VCF) for my personal use
and I have uploaded the PDF. There is NO permission to do a commerical
run.

> From this post here:
> http://matrixsynth.blogspot.com/2008/01/mean-sucker-vcf.html
>
> It looks like it is designed to run off a +12V/+5V supply, which
> makes me think that it could easily be adapted to run off +15V.
> Apparently, there are PCB's available, but I don't know how to get
> one, because I cannot read Dutch. If anyone can figure it out and
> post back to the list, that would be much appreciated.
>

Thank you for your reply.

Sorry for any misunderstanding. I was under the impression that
someone was selling the PCB. While I don't have any intention of
doing a commercial run of anything, perhaps if there is enough
interest, since you already have the PCB designed, you might consider
having a batch made, and making them available to others.

How would I find out more about the latest version?? It's not that
complicated a circuit, and could probably be built on a project board.

On 1/11/08, Louis van Dompselaar put forth:

>The latest version runs on +12V only. It only requires one resistor
>change for
>it to run on +15V.
>
>I designed a PCB (I'm NOT the one that designed the VCF) for my personal use
>and I have uploaded the PDF. There is NO permission to do a commerical
>run.
>
> > From this post here:
> > http://matrixsynth.blogspot.com/2008/01/mean-sucker-vcf.html
> >
> > It looks like it is designed to run off a +12V/+5V supply, which
> > makes me think that it could easily be adapted to run off +15V.
> > Apparently, there are PCB's available, but I don't know how to get
> > one, because I cannot read Dutch. If anyone can figure it out and
> > post back to the list, that would be much appreciated.

> if there is enough
> interest, since you already have the PCB designed, you might consider
> having a batch made, and making them available to others.
>

That's really what I meant by "commercial run"; professionally produced
PCBs that are
sold to others. I can't do that. Jeroen said if there was enough
interest he'd do a batch
himself. My design is for DIY etching (and probably press and peel as
well).
It's been taken out of context a bit by matrixsynth unfortunatelly.

> How would I find out more about the latest version??

It's the one on his website: http://www.electricdog.eu/
The schematic is all there is. There's a bit more information on the
Dutch forum (which
might be difficult to read for some...)