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2003-07-19 by elle_webb
I'm ready to wire up a sub oscillator using the 3u schaeffer design and I'm a little confused about wiring the prescale switches! How do you wire in the prescale/bypass switch? It looks like it should be a SPDT, with A going to the top, & B to the middle. I'm not sure what the bo
2003-07-16 by Bob
thanks, I am glad you like it, I guess the logical thing to do would be to start to at least make some sound clips with it if not some acual music... LOL that is the idea. I spoke to a friend that just got his Saw Pitch Shifter/Wave Multiplier panel in, so it's looking like I mig
2003-07-16 by revtor@aol.com
Howard, I havent got any new module info for you... anyway, thats a great looking system youve put together there, awesome cabinet and panels! Nice spread of circuts in there, any soundclips?????? good work! ~Steve [Non-text portions of this message have been removed]
2003-07-16 by Bob
Well, I was just wondering if anyone has completed one of Ken's Saw Pitch Shifter/Wave Multipliers. I would love to hear any and all impressions, samples and or Pics (PCB and Front Panel). I am working on a panel design for my system now but I love to see what other people are do
2003-07-07 by sasami@hotkey.net.au
I've just uploaded a new CGS design to http://www.cgs.synth.net/ Called Modulo Magic, this is a CV and waveform processor that can constrict CVs to preset bands, generate "cascading ripples", makes a great wave multiplier producing pleasant reedy type sounds (CV controllable of c
2003-06-29 by Jeffrey Pontius
I uploaded a Schaeffer 1U motm-style front panel design of Ken's cascade mixer (not for stair-stepping) into the cgs preliminary files (cgs yahoo groups site) and cgs subdirectory (motmpanels yahoo groups site). My intention is to utilize 4 outputs with the additions: (1) out 2 (
2003-06-29 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 : /Front Panel Designs/davesgatesequencer.fpd Uploaded by : bastardobastardo bastardita@... > Description : a design for a 2u gate sequencer -
2003-06-29 by sasami@hotkey.net.au
For those of you who are waiting (Hi Dave!) I've finally added CGS41, Diatonic Converter to the construction articles on the CGS web site. Ken _______________________________________________________________________ Ken Stone sasami@... Modular Synth PCBs for sale http://www.blaze
2003-06-25 by elle_webb
I'm working on a MOTM-style panel for the sequential switch. It's in the Panel Designs-Preliminary folder, CGS SEQ SWITCH.pdf. Let me know if you have any comments or suggestions. Thanks.
2003-06-20 by sasami@hotkey.net.au
No, The system I use is sensitive to a transition that passes through around 1.8 to 2 volts. As long as the trigger passes through that area, it will trigger. If it does not it will not trigger (e.g. a 5 to 10 volt transition would be ignored, as would a 0 volt to 1 volt transiti
2003-06-20 by Fernando
Hello, Is the drum simulator sensitive to different trigger amplitudes? Being a ringing filter/osc, I imagine it should react a bit differently to different amplitude of the incoming triggers... I sopose that with "usual" triggers (w/ uniform level) the only way to produce change
2003-06-18 by sasami@hotkey.net.au
Pin 2 of IC1A to 15k resistor. other side of resistor to switch. switch to positive. Ken >Hi, > >How can I implement a manual trigger (easy way) on the burst >generator? >A momentary switch conected to +15V via a 1k resistor...? >Thanks for the help > >Fernando > > > > >See the f
2003-06-18 by sasami@hotkey.net.au
>When you next update your site, could you add PCB sizes? See http://www.cgs.synth.net/modules/mounting_holes.html for a partial list. Ken _______________________________________________________________________ Ken Stone sasami@... Modular Synth PCBs for sale http://www.blaze.net
2003-06-18 by sasami@hotkey.net.au
The steiner is 6" x 1" >Hi folks, > >My name is Paul and I´m new to the list. >Can anyone tell my the size of Ken´s PCB of the Synthacon VCF? I´d >like to integrate this filter in my Doepfer case, but I think the PCB >might be too large. > >thanks, >Paul _________________________
2003-06-18 by elle_webb
--- In cgs_synth@yahoogroups.com , "posmos" wrote: > Can anyone tell my the size of Ken´s PCB of the Synthacon VCF? I´d > like to integrate this filter in my Doepfer case, but I think the PCB > might be too large. > Ken When you next update your site, could you add PCB sizes? For
2003-06-18 by Fernando
Hi, How can I implement a manual trigger (easy way) on the burst generator? A momentary switch conected to +15V via a 1k resistor...? Thanks for the help Fernando
2003-06-18 by Kevin B
It's 6 inches long by 1 inch wide. Kevin > >Hi folks, > >My name is Paul and I'm new to the list. >Can anyone tell my the size of Ken's PCB of the Synthacon VCF? I'd >like to integrate this filter in my Doepfer case, but I think the PCB >might be too large. > >thanks, >Paul > ___
2003-06-18 by posmos
Hi folks, My name is Paul and I´m new to the list. Can anyone tell my the size of Ken´s PCB of the Synthacon VCF? I´d like to integrate this filter in my Doepfer case, but I think the PCB might be too large. thanks, Paul
2003-06-18 by Jeffrey Pontius
> > > The panel looks great. Adding the multiples is a good use of space, > and would be useful along with a mixer.. > Thanks - "bare bones". Actually I couldn't think of anything else that would fit into the bottom row, so I just added mults, figuring they would be handy. Any co
2003-06-17 by Fernando
Thank you Ken. If using 1M pot, can I switch a larger speed range capacitor to compensate? f * --- In cgs_synth@yahoogroups.com , sasami@h... wrote: > Hi Fernando, just use what you can find. 1M will give a migher minimum clock > rate, where 5M would give a lower minimum clock ra
2003-06-17 by sasami@hotkey.net.au
To add to that, if you want to maintain the exact same frequency ratio, if you use the 1M pot, you could "double" the associated 100n cap to 220n, and the 330n to 680n. Ken >Hi Ken, > >I can't find 2M pots in Spain for the internal clock of the trigger >burst generator. >It is ok
2003-06-17 by sasami@hotkey.net.au
Hi Fernando, just use what you can find. 1M will give a migher minimum clock rate, where 5M would give a lower minimum clock rate. No need to adjust anything else. Ken >Hi Ken, > >I can't find 2M pots in Spain for the internal clock of the trigger >burst generator. >It is ok to u
2003-06-17 by Fernando
Hi Ken, I can't find 2M pots in Spain for the internal clock of the trigger burst generator. It is ok to use other value? Any other component value change if changing this pot's value? I could order it by mail, but I'd like to know about it... Thank you in advance. Cheers, Fernan
2003-06-17 by elle_webb
--- In cgs_synth@yahoogroups.com , Jeffrey Pontius wrote: > If anyone is interested, I uploaded an updated Schaeffer front panel > design for Ken's matrix mixer. I intend to make my mixer as fixed >bipolar (no switches) - > The panel looks great. Adding the multiples is a good us
2003-06-17 by Jeffrey Pontius
If anyone is interested, I uploaded an updated Schaeffer front panel design for Ken's matrix mixer. I intend to make my mixer as fixed bipolar (no switches) - IMO just makes the mixer more straight forward to use with little functional loss. It is pretty much a "no frills" design
2003-06-17 by sasami@hotkey.net.au
For the psycho, look at the diagram of the super-psycho, which has the leds in it, and copy that, including the transistors. The remainder of them would require emitter followers at least, though they are not ideal. Propper op-amp based drivers would be better. I don't have anyth
2003-06-17 by Rude 66
hi, i'm building a semi-modular with several cgs modules in it. i'd like to add led's to make things easier to see what does what.. things like a speed indicator for an lfo, or a 'signal present' led on an input. i have the master clock devider which is full of led's, but have an
2003-06-17 by elle_webb
--- In cgs_synth@yahoogroups.com , sasami@h... wrote: > you could run several in parallel, using the reset line to > make sure they started in sync, then use another sequencial switch to select > which of the other sequencers you were using the output from. 64 steps this way. Tha
2003-06-16 by sasami@hotkey.net.au
>Near the power connector, there is a cloverleaf group of holes in the >pcb. What's that for? Cooling. The holes are directly below a pair of dropper resistors. Overkill really, but I've seen enough singed PCBs in my time to know to add ventilation when it may be needed. >Also, i
2003-06-16 by elle_webb
Near the power connector, there is a cloverleaf group of holes in the pcb. What's that for? Also, is it possible to add additional boards to generate longer sequences?
2003-06-13 by sasami@hotkey.net.au
>I have a question - how does the Up/down jack wire in? This is how >I'm reading it: UD switch - Top to +15, middle to SW pad, bottom not connected at all. UD jack - signal connector wired to UD pad. >Also - what the RSS pad on the pcb for? If you want, it is possible to add a ro
2003-06-13 by dave wright
aloha folks! i thought about using smaller knobs for this unit - but i'd rather it stay in the format of things motm and not take up too much space (running out of cab space). but yeah the UEG layout could work. on the panel i made up i left out the MIX IN jack - as usefull it mi
2003-06-13 by elle_webb
--- In cgs_synth@yahoogroups.com , cgs_synth@yahoogroups.com wrote: > Description : a draft for a motmized sequential switch panel - comments welcome (leds are not lined up yet right) This looks good overall. The only thing I'm not sure about is whether it would make sense to som
2003-06-13 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 : /Front Panel Designs/seqswitchdraft.fpd Uploaded by : bastardobastardo bastardita@... > Description : a draft for a motmized sequential switc
2003-06-13 by tsomneevich
Hi Group, I just uploaded some attempts to approximate Walsh synthesis w/ my existing modular. It's not near Walsh, but maybe you can hear some atypical uses of the dividers. This is one VCO (pulse), three VCA's w/ three EG's, tapping four sections of the master divider. Two go t
2003-06-12 by sasami@hotkey.net.au
I've just added a new design to the CGS page. The Cascade Mixer. It's no great marvel, but may prove an interesting toy. It was developed for a personal project, but I figured as the work was done, why not share it? Ken ____________________________________________________________
2003-06-11 by sasami@hotkey.net.au
Well ... Not as it stands. Basically, it was done this way to emulate the Serge, shortcomings and all. If you were to connect a 1k resistor to pin 7 of IC1B (the one without the pin numbers on the diagram!) you could then use that as the output, but it would still be connected to
2003-06-11 by Fernando
Hi, It is possible to use the comparator alone? How? Thanks in advance. Cheers, Fernando
2003-06-10 by sasami@hotkey.net.au
>First off, what would be the best way to incorporate pots at the >inputs? What pot values would work best & what's the best way to wire >each pot into the switch? Input jack goes to CW end of pot (50k to 100k lin). CCW end of pot goes to 0V/gnd. Center of pot goes to input on PC
2003-06-10 by elle_webb
I'm getting ready to build the sequential switch and need advice on a few things. First off, what would be the best way to incorporate pots at the inputs? What pot values would work best & what's the best way to wire each pot into the switch? Second, would it make sense to build
2003-06-10 by elle_webb
I'm working on my Matrix Mixer, and trying to figure out the panel. I put together a rough layout of a MOTM-style design. It follows the same general layout as the Schaeffer-style design, except that it adds the Polarity switches. It's in the Panel Designs - Preliminary file fold
2003-06-02 by sasami@hotkey.net.au
A little jumper from two pads further up the same traces will be fine. Alternately, scrape the green solder mask off the tracks, and tack a thing strand of wire across that way. Ken >Hello all, > >I've put 90% of the CGS Steiner VCF PCB together. While trying to >dance with its a
2003-06-02 by z_flash_ram
Hello all, I've put 90% of the CGS Steiner VCF PCB together. While trying to dance with its alleged input-capacitor capers, I still soldered one in incorrectly. During the removal of said cap (the HP input 1uF, where I'm going to place a link.), I sucked up the two little round m
2003-05-29 by sasami@hotkey.net.au
I've never tried an A series (unbuffered) in there, though I don't see why it shouldn't work. Possible problems 1) MC4006 - it isn't a 4006! you'd want MC14006. 2) wiring error. 3) timing issues between the chosen chips. Ken >Is there a rpoblem with using the series A 4006 in the
2003-05-29 by osthelder
Is there a rpoblem with using the series A 4006 in the Digital Noise circuit? My breadboard proto isn't making noise, but rather it's halving the output frequency of the VCO. Chub
2003-05-29 by elle_webb
Anyone interested in a MOTM style panel for the Drum Simulator? I put together a possible panel design and put it in the files area under preliminary panels. Post if your interested, or if you'd rather see something else for this panel.
2003-05-27 by sasami@hotkey.net.au
>Hello Ken.....and all. Sorry Ken...You must HATE me always jumping in >like this BUT!!!! This is NOT a Sawtooth FREQUENCY shifter circuit. >It's a Sawtooth PHASE shifter circuit. I can already hear people >writing in "I built the thing but the frequency doesn't change when I >sw
2003-05-27 by Dean Batute
Hello Ken.....and all. Sorry Ken...You must HATE me always jumping in like this BUT!!!! This is NOT a Sawtooth FREQUENCY shifter circuit. It's a Sawtooth PHASE shifter circuit. I can already hear people writing in "I built the thing but the frequency doesn't change when I sweep t
2003-05-26 by sasami@hotkey.net.au
I've got a lot of the out of stock boards back in again, though no doubt the new and more popular boards will vanish quickly. There are a couple of new additions - the Sawtooth frequency shifter which makes a great wave mangler, and a basic logic board. Ken ______________________
2003-05-25 by Gus
Thanks very much to those who offered advice. It turns out, Jaycar are selling the 2n2222 with an incorrect 2n2222 datasheet, where the emittor and collector pins have been transposed. The transistor jaycar sell is the kps2222a, this is a fairchild device which is identical excep