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...)