Tube synth diy

hi Thanks for posting your schematics, if you want to start a homepage
for your pics and schematics, set one up for free at www.sdiy.org -
anything synth related is okay, i think you get 100mb to fill (of
course - feel free to post stuff here too)

i have some plans for a dekatron based 'sequencer' - needs 7 double
triode tubes and a dekatron, won't be able to build and test it 'til
november (holidays), also have set aside the parts necessary to build
the 'harmonic synthesizer'(pdf in files)...really its just a wizzbang
graphic Eq but can adjust phase as well as frequency.
am also planning on judds 'bell gates'.
guess a few simple oscillators/dividers will be needed - neon is good,
they sound excellent, cheap and easy to build.
Probably rebuild my PSU too, need more than just +/-170V for some of
these designs.
for tube heaters - power supply from a dead pooter, 20A of +12V and
12A of +5V, its easy to change a few resistors inside to get 12.6V and
6.3V.

i built 2 of Eric's VCfs last year, they were okay but cos they sat
next to a 6jh8 wavefolder and a 6bn6 clipper, they kind of paled
(anything would next to the beam modulators) compared to the nastiness
going on next door.
keep us updated - especially some MP3s!
andrew

--- In tubesynthdiy@yahoogroups.com, "Jon aka Johnnytoobad"
<leftyjohn69@...> wrote:
>
> Hi,
>  i almost finished building 2 of of the CGS/Eric BArbour tube synth 
> modules, i added an output control on the noise generator, as i used a 
> 12AT7 for cv input i had the other alf unused so i used it to amplify 
> signal...
> noise generator:
> http://www.hiboox.com/lang-fr/image.php?img=5o0oin4p.jpg
> VCF:
> http://www.hiboox.com/lang-fr/image.php?img=ygfyeup3.jpg
> if anything seems wrong to you let me know... soon pictures of the buil 
> modules and PSU schematic and pic...
> i also addzed them on photos/schematics mods folder
> who is working on tube synths these times and what are you doing???
> i'd like also know who has already tryed judd circuits? how does it 
> sound??? i guess more soft than Eric Barbour's... maybe am i wrong...
>