source for bandpass filter pots?
2003-05-25 by R. Drake
anyone have a source (& part numbers) for the 2 onboard posts for the cgs30 bandpass filter? one 50k linear, one 100k dual reverse log; 16mm... thanks Bob Drake rdrake@...
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Re: Matrix Mixer panel
2003-05-24 by Jeffrey Pontius
> > I have a 'preliminary design sketch' - It is 4U (motm spacing), > > and for using pots to mount the pcb to the front panel I don't see > how a > > 3U motm spacing panel will work. > > Why don't you put a copy of your design in the files area so you can > get feedback? I made
Re: Matrix Mixer panel
2003-05-23 by sasami@hotkey.net.au
>My initial thought is to the pots at the top; the 5 inputs to the >left of its row; the then a switch and the output jack below each >column. > >Has anybody built one of these yet? If so, what's your panel look >like? I built mine pretty much like you described. Ken ____________
Re: Matrix Mixer panel
2003-05-23 by elle_webb
--- In cgs_synth@yahoogroups.com , Jeffrey Pontius wrote: > I have a 'preliminary design sketch' - It is 4U (motm spacing), > and for using pots to mount the pcb to the front panel I don't see how a > 3U motm spacing panel will work. Why don't you put a copy of your design in the
Re: Matrix Mixer panel
2003-05-23 by Jeffrey Pontius
On Fri, 23 May 2003, elle_webb wrote: > What would you want for a layout? It looks like it will need 5 input > jacks, 5 output jacks, the 25 pot holes, & optionally 5 switches. > > My initial thought is to the pots at the top; the 5 inputs to the > left of its row; the then a swi
Re: Matrix Mixer panel
2003-05-23 by elle_webb
--- In cgs_synth@yahoogroups.com , "Bob" wrote: > Hey, > I would be down for two of the matrix mixers. Doing a MOTM style panel for this will require some compromise, because of the pot spacing, and the design in general. What would you want for a layout? It looks like it will ne
Re: Anyone getting Stooge panels done?
2003-05-23 by Bob
Hey, I would be down for two of the matrix mixers. Howard --- In cgs_synth@yahoogroups.com , "dave wright" wrote: > if anyone is intrested - i'd be intrested in getting the following - if we could get 2-3 people on each - it would > make everyones life easier! > > gate sequencer
Re: Anyone getting Stooge panels done?
2003-05-22 by dave wright
if anyone is intrested - i'd be intrested in getting the following - if we could get 2-3 people on each - it would make everyones life easier! gate sequencer analogic sequential switch cv cluster asr pulse divider master divider burst generator dave wright www.notbreathing.com/be
Anyone getting Stooge panels done?
2003-05-22 by elle_webb
I don't see any CGS designs on the Stooge panel list: http://www.wiseguysynth.com/larry/panel/gif.htm I'd be interested if anyone's getting panels made for: Analogic Matrix Mixer Super Psycho Gated comparator Gate Sequencer Sub-oscillator SVF Sequential Switch Drum Simulator If a
Re: Synthacon VCF please help!
2003-05-20 by sasami@hotkey.net.au
It sounds like your frequency is set at the minimum all of the time, so look at the CV input and components in that area. Most likely it IS a constuction error. Ken >Hi, >I've built the synthacon vcf as per the rev.1. schematic, but am having trouble getting it to work. admittedl
Synthacon VCF please help!
2003-05-19 by Gus
Hi, I've built the synthacon vcf as per the rev.1. schematic, but am having trouble getting it to work. admittedly i've built it on vero board, but i was careful, and have thoroughly checked my wiring. Strangely when i run audio in the Low pass i get no out put, on the band pass
Re: Paper faceplates
2003-05-19 by sasami@hotkey.net.au
I use a Scotch brand preassure sensitive tape, which is a film of "sticky" between waxed paper. There is no tape per se involved. The stuff is designed for mounting posters and comes on a roll that is about 12 inches wide. If you want to use glue, laminate BOTH sides of the paper
Paper faceplates
2003-05-19 by Michael
Hi Group, I'd like to try the paper faceplate idea and wondered if any of you had tried it yet. I think I've figured out most of the details except for one thing: What's the best type of glue to use to attach the paper design to the metal (aluminum) faceplate? I'd like to use glu
Re: Digital Noise
2003-05-17 by sasami@hotkey.net.au
The stalling would depend on the individual chip/brand. I have not experienced it myself. Ken >Hello, > >I finished up my Digital noise module this morning. I noticed that >if I turned the speed pot too far clockwise the vco would stall, so I >added a 75K resistor between the 15V
Digital Noise
2003-05-17 by vtl5c3
Hello, I finished up my Digital noise module this morning. I noticed that if I turned the speed pot too far clockwise the vco would stall, so I added a 75K resistor between the 15V connection and the CV input jack. I'm not sure if anyone else has had to do this, but I thought it
Re: bi-polar caps
2003-05-16 by sasami@hotkey.net.au
Blocking DC in this case. 8uf would be fine. The tolerance of these things is +/-20% anyway. The worst you could do would be to lose a little bass, but I doubt you'd notice it - your speakers probably aren't that good. (Nobody's speakers are that good). Ken >i'm building the drum
bi-polar caps
2003-05-16 by daryl groetsch
i'm building the drum sim board, and was wondering about the effect of using different size non-polarized caps for the outputs, like 8uF. are these used for decoupling, or blocking dc? trying to avoid mail order shipping charges and wait time (and curious). thanks, daryl
Re: drum question
2003-05-08 by sasami@hotkey.net.au
>Does anyone have audio samples of the drum board output? It sounds much like any other ringing oscillator rhythm unit used on organs, Dr rhythm bass drums etc, except that it has a rather nasty "kick" at the beginning to emphasize the drum strike. This of course can be reduced t
matrix mixer panel
2003-05-08 by elle_webb
Has anyone made a MOTM-style matrix mixer panel?
drum question
2003-05-05 by elle_webb
Does anyone have audio samples of the drum board output? Also, is there much benefit to bring resonance to the panel?
Re: New- be here!! need info
2003-05-05 by sasami@hotkey.net.au
look at www.organservice.com for schematics and parts. Unless the organ has sentimental value, I would not travel 900 miles for it. Ken > So what can I expect in the area of repair's? are parts avalible for >this?? can someone of limited keyboard experence take on a project >like
New- be here!! need info
2003-05-05 by Robert
First off let me say hi to everyone. a little about myself, I am keyboard dumb cuz I am a bass player(12VER). I do have a toy keyboard its a Roland E-56.(toy) I do like messing with it... I'm currently build a 16 tk project studio and I am a metalhead!! I guess thats to the point
Re: pitch shifters for sound synthesis?
2003-05-02 by super1paul
Well, I guess if you entered a sine, and shifted it up an octave, you'd have a second harmonic... You could make a third harmonic, fourth, etc... Added together in appropriate amounts you could re-create a sawtooth (32 or 64 harmonics needed really). The phase behavior would prob
Re: pitch shifters for sound synthesis?
2003-05-02 by electrovoz
Pitch shifters have no ability to add or remove harmonic content from audio signals. I would experiment with a lowpass multimode filter. --- In cgs_synth@yahoogroups.com , "kdakan" wrote: > hi. i was curious if you can use pitch shifter effect to add > harmonics and actually synt
Re: Digest Number 169
2003-05-02 by paul smit
Hi there, Agree with the statement that the best you'd get is a saw tooth. With guitar, I'd say to go the traditional way: first turn its signal into something with high harmonic content (asymmetrical distortion, waveshape to taste) and then perform subtractive synthesis. I guess
Re: pitch shifters for sound synthesis?
2003-05-01 by sasami@hotkey.net.au
I don't think a pitch shifter (as distinct from frequency shifter) will really help. It shifts the present frequencies by corresponding ratios. At best I can see, even with feedback, that all you would generate would be a sawtooth wave. Anyone else care to take a stab? Ken >hi. i
pitch shifters for sound synthesis?
2003-04-30 by kdakan
hi. i was curious if you can use pitch shifter effect to add harmonics and actually synthesize different instrument sounds from any signal, like a electric guitar sound. I was thinking of filtering the overtones of the electric guitar sound to make it more like a sine wave (which
Re: alt. transistors for synthacon vcf
2003-04-29 by Yves Usson
Hi Twenty-two years ago I built two synthacon VCFs in which I subtituted the 2N2222s by BC547 and the 2n2907 by a BC557. It worked fine then and it is still working today ! Cheers >hi everyone >ive been hunting tokyo for the >2n2222 and 2n2907 transistors, but these codes are unk
alt. transistors for synthacon vcf
2003-04-29 by bbluthang
hi everyone ive been hunting tokyo for the 2n2222 and 2n2907 transistors, but these codes are unknown in japan. i researched the japanese equivalents, in the TO-18 format, but every shop i went to told me they are obsolete and unavailable. in the end, i picked out a few trannies
website
2003-04-25 by sasami@hotkey.net.au
The CGS server had to be rebuilt, so I am having to re-upload the whole site. If you need to access something immediately, please use the backup server, to which I uploaded all recent module construction files earlier today (and excuse the barrage of advertising). I am uploading
Re: matching 1% resistors
2003-04-23 by John Loffink
To make it even simpler, all 100K resistors attached to the negative summing node of each op amp need to be matched to each other. All ten 100K resistors don't need to be matched to each other. The 10K resistors should all be matched, since they create a long voltage divider chai
Re: matching 1% resistors
2003-04-23 by John Loffink
Yes, almost, but make sure your meter has better than 1% accuracy. Many don't. You don't have to match 100K ohms. You just have to match the resistors to each other, since the gain is determined by their ratios to each other. So if they're all 99.83 K, that's alright. John Loffin
matching 1% resistors
2003-04-23 by Jeffrey Pontius
Given that Ken recommends matching most of the resistors in the cv cluster module, I thought I would give it a try. All I have is a digital voltmeter. Is this the only piece of equipment I need to try matching resistors? Is it as "simple" as reading the ohms on my meter (say, abo
Re: Cheap source for SPDT CTR Off Switches?
2003-04-17 by Scott Deyo
Definitely center off. I also used a center off for the loop/hold. In the center position the counter cycles through all ten steps and repeats, so it's like a 2-step pause after each 8 or something. Ken told me what it was doing, and I pretended to understand :) It's not particul
Re: Cheap source for SPDT CTR Off Switches?
2003-04-17 by Bob
I used the center off switches... I bought 100 I figure if one goes out I have a spare... but so far they seem to work great... --- In cgs_synth@yahoogroups.com , "elle_webb" wrote: > Thanks for the info. The prices seemed almost too good! > > I'll have to give them a try. > > Wh
Re: Cheap source for SPDT CTR Off Switches?
2003-04-17 by Bob
I used the center off switches... I bought 100 I figure if one goes out I have a spare... but so far they seem to work great... --- In cgs_synth@yahoogroups.com , "elle_webb" wrote: > Thanks for the info. The prices seemed almost too good! > > I'll have to give them a try. > > Wh
Re: Cheap source for SPDT CTR Off Switches?
2003-04-17 by elle_webb
Thanks for the info. The prices seemed almost too good! I'll have to give them a try. Which ones did you get? Are they center off like Ken recommends? --- In cgs_synth@yahoogroups.com , "Scott Deyo" wrote: > > > their site is very cheesy, but they ship promptly. i used these swit
Re: Cheap source for SPDT CTR Off Switches?
2003-04-16 by Scott Deyo
their site is very cheesy, but they ship promptly. i used these switches on my gate seq, and they work as expected. the brand is TEC Inc., if that helps. >From: "elle_webb" elle_webb@... > >Reply-To: cgs_synth@yahoogroups.com >To: cgs_synth@yahoogroups.com >Subject: [cgs_synth] R
Re: Cheap source for SPDT CTR Off Switches?
2003-04-15 by Bob
I have used them, they work just fine... --- In cgs_synth@yahoogroups.com , "elle_webb" wrote: > > > www.unicornelectronics.com has them for $.30 each if you buy 100! > the > > quality seems fine; i can't remember what brand they are. > > Has anybody tried these out? The unicorne
Re: Cheap source for SPDT CTR Off Switches?
2003-04-15 by elle_webb
> www.unicornelectronics.com has them for $.30 each if you buy 100! the > quality seems fine; i can't remember what brand they are. Has anybody tried these out? The unicornelectronics is extremely cheesy. Are the switches any good?
Re: Cheap source for SPDT CTR Off Switches?
2003-04-15 by Scott Deyo
www.unicornelectronics.com has them for $.30 each if you buy 100! the quality seems fine; i can't remember what brand they are. >From: "vtl5c3" rfahl@... > >Reply-To: cgs_synth@yahoogroups.com >To: cgs_synth@yahoogroups.com >Subject: [cgs_synth] Cheap source for SPDT CTR Off Swit
Favorite modules
2003-04-14 by elle_webb
What are your favorite CGS modules, and how are you using them? I've got a MOTM system, and am interested in modules that would add unique capabilities.
Re: Digest Number 162
2003-04-14 by Cynthia Webster
> From: "vtl5c3" rfahl@... > > Subject: Cheap source for SPDT CTR Off Switches? > > Hello, > > I'm trying to find an affordable source for switches for the two CGS > Gate Sequencers that I hope to finish soon. The C&K 7103 that Ken > recommends are almost $5 apiece at mouser... t
Cheap source for SPDT CTR Off Switches?
2003-04-14 by vtl5c3
Hello, I'm trying to find an affordable source for switches for the two CGS Gate Sequencers that I hope to finish soon. The C&K 7103 that Ken recommends are almost $5 apiece at mouser... times 32 and I'll need to sell one of my kidneys to complete this project. Does anyone know o
Re: Emails keep getting returned
2003-04-13 by Ken Stone
I can always be mailed via the groups server by sending to: cgs_synth-owner at yahoogroups dot com if my own ISP is playing up. Ken --- In cgs_synth@yahoogroups.com , "Bob" wrote: > Hey Ken, > I have been trying to email you all day and your emails keep > getting returned... > >
Emails keep getting returned
2003-04-13 by Bob
Hey Ken, I have been trying to email you all day and your emails keep getting returned... Howard
CV cluster on line
2003-04-12 by sasami@hotkey.net.au
The CV cluster article (CGS37) is now online. Enjoy. Ken _______________________________________________________________________ Ken Stone sasami@... Modular Synth PCBs for sale http://www.blaze.net.au/~sasami/synth/ > Australian Miniature Horses & Ponies http://www.blaze.net.au/
Sequential Switch article
2003-04-11 by sasami@hotkey.net.au
Finally, I have uploaded the Sequential Switch article! Boards are now available. Next - the CV cluster... Ken _______________________________________________________________________ Ken Stone sasami@... Modular Synth PCBs for sale http://www.blaze.net.au/~sasami/synth/ > Austral
Im into quality, never heard this synth. how does it sound?
2003-04-03 by itsdoron
Hi guys, i have few modulars at home, the truth is that i dont touch any more my doepfer and a/s. and its hard to take me off the modcan,technosaurus, oakley stuff. how does this synth sound??? is it punchy? evil? anyone has good samples to present me? all the best, thank you for
Re: Pulse Div/Boolean Logic module LEDs
2003-04-02 by sasami@hotkey.net.au
>Hello, > >I'd like to add LEDs to the Pulse Divider outputs of the CGS36 >module. Looking at the diagrams for the Boolean modules, it appears >that I can just strap an LED betweend the buffer transistor's output >and the resister following it. Since the divider's buffers are NPN