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2004-01-02 by John Loffink
To recap, I built my Steiner VCF and noticed that the entire frequency range was covered by knob positions 0 through 5. I also wanted the direct control voltage input to track to approximately 1 V/octave. Here are the tweaks I did to bring this circuit up to snuff. Your circuit m
2004-01-02 by John Loffink
I already tried that. It just moves the frequency range more towards the center of the knob rotation, but doesn't give much more range with the control. A combination of greater series resistor to the pot (about 300K) and decreasing control voltage divider resistor from 1K to 500
2004-01-02 by sasami@hotkey.net.au
Increase the resistor in series with the pot (220k to 470k). It sounds like you have a transistor with too much gain. Ken >Does anyone else have a Steiner VCF where knob values over 5 have no effect? >It seems that 0 through 4/5 covers the entire audio range on mine. > >John Loff
2004-01-02 by John Loffink
Does anyone else have a Steiner VCF where knob values over 5 have no effect? It seems that 0 through 4/5 covers the entire audio range on mine. John Loffink The Microtonal Synthesis Web Site http://www.microtonal-synthesis.com The Wavemakers Synthesizer Web Site http://www.wavema
2003-12-28 by John Loffink
> Actually, yes. Electrolytics used in synth modules are bipolar (a + side > and a - side). Ceramics, metal film, ... are not bipolar. There are > others here who are much more qualified than I to expound on capacitors. It is more accurate to call most common electrolytic caps un
2003-12-28 by John Loffink
The only critical caps in the Steiner VCF are the caps for the integrator/filter sections, the 2N2s. For mine I am ordering some Polystyrene, 2200 pF, radial caps from Mouser, part number 23PW222. These are high stability, low temperature coefficient, 5% tolerance caps. You can a
2003-12-28 by Jeffrey Pontius
> > I'm attempting to put together my first project (the steiner vcf) and A nice and different filter - I use this one as much as any others that I have. > am somewhat confused about capacitors and which ones to > use. Welcome to the club - these things drive me crazy. Beyond the
2003-12-28 by eblakesmith
Hi there, I'm attempting to put together my first project (the steiner vcf) and am somewhat confused about capacitors and which ones to use. Beyond the values listed for the circuit I'm wondering if it makes any difference the type of capacitor used (ceramic, electrolytic, etc).
2003-12-19 by elle_webb
--- In cgs_synth@yahoogroups.com , sasami@h... wrote: > > > >Has any one built the Wave Multiplier in addition to Oakley's > >Wavefolder? > > Tony himself. He didn't build mine but he did build a very similar one. His > comment is that it requires two of his WaveFolders in series
2003-12-18 by John Loffink
The Oakley Wavefolder has a more subtle effect on the sound, something like pulse width modulation in character. It only folds the waveform once. The CGS Wavefolder does multiple folds and adds much more harmonics and animation to the waveform. John Loffink The Microtonal Synthes
2003-12-18 by sasami@hotkey.net.au
>Has any one built the Wave Multiplier in addition to Oakley's >Wavefolder? Tony himself. He didn't build mine but he did build a very similar one. His comment is that it requires two of his WaveFolders in series to do anything like this one does. Ken ____________________________
2003-12-18 by elle_webb
--- In cgs_synth@yahoogroups.com , Larry Hendry wrote: > --- Richard Brewster wrote: > > I am getting interested in the Wave Multiplier, too. > > Highly recommended by me and others. > Has any one built the Wave Multiplier in addition to Oakley's Wavefolder? If so, I'd be interes
2003-12-18 by Larry Hendry
Well, I will try to see if I can fit that much in then. I am not too concerned with the exact standard spacing. On my Blacet VCO I even put a jack completely out of line. :) My own personal preference is just not to have jacks too high on the panel. LH --- Jeffrey Pontius jpont@.
2003-12-18 by Jeffrey Pontius
> The new panel will have 2 pots, 2 LEDs and 10 jacks (not room for 12 > jacks). I think there would be room for 12 sockets [6 rows] (based on previous cgs panel designs that I have done) - the only 'problem' would be that the rows of sockets would not line up with the spacing on
2003-12-18 by Scott Stites
As coincidence would have it, I just finished the first module for my synth - the CGS Wave Multiplier. I've had the board built for about a year now, and I've been playing with it for about that long, and I have to agree with Larry -get it! Trying to demonstrate what the module d
2003-12-18 by mididood@aol.com
Hello gang, I've sent a drawing to the files section for the Infinite Melody. I think this will be mentioned automatically, but its my first attempt at this, so I'm sure I've screwed it up somewhere. One may ask: "why in god's name did I do this?" - Fair enough! As I've mentioned
2003-12-18 by cgs_synth@yahoogroups.com
Hello, This email message is a notification to let you know that a file has been uploaded to the Files area of the cgs_synth group. File : /Infinite Melody pcb wiring.jpg Uploaded by : rogerrossen mididood@... > Description : Infinite Melody pcb to panel wiring You can access thi
2003-12-18 by Larry Hendry
--- Richard Brewster pugix@... > wrote: > I am getting interested in the Wave Multiplier, too. Highly recommended by me and others. > There is a Stooge panel for it. Indeed. We also have the ASR and the drum simulator. And, I can assure you that the number of CGS Stooge panels wi
2003-12-18 by Richard Brewster
I uploaded the two pictures of my Infinite Melody + Noise module to the photos section of the cgs_synth Yahoo group. I am getting interested in the Wave Multiplier, too. There is a Stooge panel for it. -Richard R. Drake wrote: >Richard, > >Thanks very much, i really appreciate it
2003-12-16 by Don't t(h)read on my tentacles, Earthlin
Le 16 déc. 2003, à 15:41, grotechef@... a écrit : > i just updated my site on synthesizers with more info and literature > and links, and a pic of my modular as well :) > http://users.pandora.be/tenor The Strange is available… GREAT!!!!!! thanks! Denis H] lepetitmartien =========
2003-12-16 by grotechef@yahoo.com
i just updated my site on synthesizers with more info and literature and links, and a pic of my modular as well :) http://users.pandora.be/tenor thanks! grotechef
2003-12-15 by sasami@hotkey.net.au
I can see >that installing these resistors decreases the range. How much is it >actually? About 50%? Yes. >Second observation. There is another optional 200K resistor on the B0 >node. This is not shown on the schematic either. I installed those, >too. I wanted to get the most acc
2003-12-15 by Richard Brewster
Interesting. I have a couple of observations. First, there is a 100K resistor *not shown* on the schematic which goes between the junction of these optional 200K resistors and the 100K from the B5 node and pin 2 on the TL072s. (Without the optional resistor, this makes the input
2003-12-15 by sasami@hotkey.net.au
>I think I do... but which ones are they on the PCB? Is it the six >that connect to ground? It seems like the DA sections on the >PCB don't quite match what's on the schematic. The three at the bottom of the long row, near the B5D pad. Note THREE, not six. Ken ___________________
2003-12-15 by vtl5c3
I think I do... but which ones are they on the PCB? Is it the six that connect to ground? It seems like the DA sections on the PCB don't quite match what's on the schematic. --- In cgs_synth@yahoogroups.com , sasami@h... wrote: > It is possible you have the "optional" 200k resist
2003-12-15 by sasami@hotkey.net.au
It is possible you have the "optional" 200k resistors at the MSB position of the D/A ladders too. Check the diagram - it's the greyed out resistor. Ken >I was testing out my Infinite Melody module this evening. The Mix >output works well... like a Psycho LFO on steroids. > >The o
2003-12-15 by vtl5c3
I was testing out my Infinite Melody module this evening. The Mix output works well... like a Psycho LFO on steroids. The other three outputs have really low levels, even with the output pots turned all the way up. Has anyone else encountered this? When I first tested the module,
2003-12-14 by grotechef
thanks for checking it, james. i'll add it, although it is rather serge-specific/not that universal. greetz! > Nice resource page!! > Maybe add a link to Rich Gold's Serge book: > http://home.att.net/~djaux2/Intro81.htm > Best Regards, James
2003-12-14 by Carbon111
> hello, > please check my site about modular synth literature : > http://users.pandora.be/tenor > ps: i like feedback! > thanks! Nice resource page!! Maybe add a link to Rich Gold's Serge book: http://home.att.net/~djaux2/Intro81.htm Best Regards, James
2003-12-13 by grotechef
hello, please check my site about modular synth literature : http://users.pandora.be/tenor ps: i like feedback! thanks!
2003-12-12 by dave wright
aloha folks - just thought i'd add my two bits about the infinite melody generator as its one of my favs richard is right you want to keep the bit switches. i also strongly recomend using a switch for random/if mode - sending 5v into it. i have mine in a panel similiar to richard
2003-12-12 by Richard Brewster
Do NOT omit the bit disable switches! I labelled mine "Enable" instead of disable. These optionally add the two more significant bits into the three fixed outputs. What this means is that the fifth bit doubles the range of the outputs and the sixth doubles it again. This is very
2003-12-12 by sasami@hotkey.net.au
>i'm unclear about the function & use of the "bit disable" switches on >outputs 4&5 of the infinite melody schematic... Bit Disable switches are to limit the range of the melody. with 4 bits running, you get a 16 semintone range. 5 bits, a 32 semintone range and 6 bits a 64 semin
2003-12-12 by data2action
all, i'm unclear about the function & use of the "bit disable" switches on outputs 4&5 of the infinite melody schematic... and then the associated mix ins. Are those ins optional? and if you decide to omit them, should the disable switches be closed or open? And and, what effects
2003-12-09 by charlesosthelder
This is coming along as quickly as one would expect from me at this point... The 6064-based VCA is very nice and behaves in the manner Ken describes. Turn the drive control past the halfway mark and some wonderful assemetrical clipping/wavefolding occurs. The positive side of a s
2003-12-09 by Jeff Foster
--- In cgs_synth@yahoogroups.com , sasami@h... wrote: > > >I used pots with switches on them for each of the 6 voices. > >I figured I would save on drilling holes and cost of seperate > >switches. The problem is the switches are open with off and closed > >when on ( when you turn
2003-12-09 by sasami@hotkey.net.au
>I used pots with switches on them for each of the 6 voices. >I figured I would save on drilling holes and cost of seperate >switches. The problem is the switches are open with off and closed >when on ( when you turn the pot up ...). The circut requres the off >postion to ground
2003-12-08 by sasami@hotkey.net.au
It really doesn't matter. The decision will be whether to have two fixed resistors on one ring modulator (e.g. R6 & R5), or one each (e.g. R6 & R3), though I don't know that it will make a lot of difference. Ken >in a compromise between space and tweakability, i ve decide to have
2003-12-08 by bbluthang
in a compromise between space and tweakability, i ve decide to have just 4 pots for the shimmer control, rather than a possible 6. my question is which would be the best positions to fit the 2 resistors (and does size matter?) - R6 & R3, R2 & R5 or R1 & R4? on one pcb ive soldere
2003-12-07 by Jeff Foster
hi all, I finaly got back to the bench and got my super psycho module wired up. The tri wavea are really fat...cool. anyway here is my question and ple for help... I used pots with switches on them for each of the 6 voices. I figured I would save on drilling holes and cost of sep
2003-12-07 by charlesosthelder
I still don't > know if it would work. I've thought about if often enough, but haven't had > time to do anything yet. > > Ken Well, I need to get parts for repairing a friend's Fender Twin anyway. I'll pick up a 6AR8 and find out! Chub
2003-12-07 by sasami@hotkey.net.au
>The 6064 tube does very well with the 15 volt plate supply. Would >the sheet beam tubes perform this well? Now that I don't know - howver, if you were to add a decoupling capacitor in the input lead to the beam modulators, you could run them from +15 to -15 (instead of +15 to GN
2003-12-07 by charlesosthelder
Good advice Ken! Thanks again. That's pretty much the scheme I envisioned, but the 1K resistor is a good idea. The 6064 tube does very well with the 15 volt plate supply. Would the sheet beam tubes perform this well? Chub-feeling less isolated > > Don't isolate your grounds - it
2003-12-06 by sasami@hotkey.net.au
>If you need extra VCA's *and* want to enrich your harmonic output, >this may be the ticket. Of course, it may also force you to enrich >your power supply requirements. Right now, I'm using a separate >triple-output supply (+&-15 and +5vdc)for just the planned triple >tube VCA. T
2003-12-06 by osthelder
Hey Ken and group! I've been playing with the tube VCA and I must say, this is a blast! I've removed the lowpass cap in the CV circuit and am playing with high frequency modulation for some non-linear wave mangling. If you need extra VCA's *and* want to enrich your harmonic outpu
2003-12-04 by Aaron Day
Sorry for the public post msg. for Ken below. ______________ ...and I know you ck the other account infrequently anyway, Hi Ken- I managed to sell a couple of the boards pulling in US$17.50 which will pass on to you + the cost of the Steiners. Send me an email total/post/et.. and
2003-12-01 by vtl5c3
Ech... Pooohhh.... that was meant to go to Ken privately. Please disregard. That's what I get for replying to old emails. --- In cgs_synth@yahoogroups.com , "Fahl, Romeo" wrote: > Hello Ken, > > I suspect that Fernando has already contacted you about doing a PCB layout > for Aaro
2003-12-01 by Fahl, Romeo
Hello Ken, I suspect that Fernando has already contacted you about doing a PCB layout for Aaron Cram's Envylope. I know that you're busy and I'm really interested in making PCBs of this circuit myself. Fernando and I have bounced some ideas off one another to make sure that the E
2003-11-29 by sasami@hotkey.net.au
>I have used that part number and also 623-2743002112. The 1112 part is >680 ohms @ 100Mhz and the 2112 is 1330 ohms at 100Mhz. >Does it really matter that much? No, it doesn't. Use a wire link, or a 10 ohm resistor instead if you like. I just use beads I have to hand - I don't e
2003-11-29 by Richard Brewster
I have used that part number and also 623-2743002112. The 1112 part is 680 ohms @ 100Mhz and the 2112 is 1330 ohms at 100Mhz. Does it really matter that much? I wonder if it depends on the filter capacitor used. MOTM uses a 10uf value while Oakley uses a 22uf. The purpose of the