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2012-12-10 by Stephen Richards
Hi Ken When reading (L pin 10 LM3900) with DMM ; it swings from fully CCW +2.54 to fully CW+2.07V. no jump or difference in voltage around 1pm mark at all. Should i check 'S' and 'R' ? ________________________________ From: " sasami@... " sasami@... > To: cgs_synth@yahoogroups.co
2012-12-09 by sasami@hotkey.net.au
>What kind of FET would you suggest for this mod? Same as in the VCO 2N4091 or similar >Do you mean it would only work if the Clock speed is faster than the overall LFO speed or it's adjusted speed? Faster than its current adjusted speed. Sync works by shortening a cycle. It will
2012-12-09 by Steve Inselman
What kind of FET would you suggest for this mod? Do you mean it would only work if the Clock speed is faster than the overall LFO speed or it's adjusted speed? Thanks Ken. Much appreciated! ________________________________ From: " sasami@... " sasami@... > To: cgs_synth@yahoogrou
2012-12-09 by zbzbzbblack
Figure I'd start by asking here - I'm looking for either real-life, front/back photographs or visual wiring diagrams (not schematics!) of these modules: Weighted Random Switch Super Psycho LFO Stomp Box adapter V2.0 Analog Switch Matrix Wave Multiplier I'm asking this to everyone
2012-12-09 by sasami@hotkey.net.au
>Do you think it could be a problem with transistors here ? I doubt it. I've built them with generic parts. I can only imagine you have a wrong value part. Make sure the CV MIXER is working. Forget about listening to it. Find out what voltages are doing at point "L". It should be
2012-12-09 by Stephen Richards
HI Ken I've asked around and am having little luck trying to sort this one. Do you think it could be a problem with transistors here ? ________________________________ From: " sasami@... " sasami@... > To: cgs_synth@yahoogroups.com Sent: Thursday, December 6, 2012 11:14 AM Subjec
2012-12-08 by sasami@hotkey.net.au
I guess anything is possible. You would be adding sync as per VCOs, with a FET across the integrator capacitor of each. It would be hard sync, and would only work "correctly" if the clock was faster than the LFO speed. >Hi Ken, >Is it possible to have an external clock control th
2012-12-08 by Steve Inselman
Hi Ken, Is it possible to have an external clock control the speed of the Utility LFO? I have two of your Utility LFOs and is it possible to synchronize all 4 of their speeds through modification? Thanks, Steve [Non-text portions of this message have been removed]
2012-12-06 by Stephen Richards
It's single sided , version 1.1. Couldn't trim it out. I'm stumped too. Better double check resistor values. Is it worth mentioning that it self oscillates at max q setting ? With the regular 68k resistors in place , no mods. ________________________________ From: " sasami@... "
2012-12-05 by sasami@hotkey.net.au
Are you not able to compensate for this using the trimmer? Also make sure your FREQ CV pot input is set to the center of its travel when you do the test. I really don't know why this is happening. I can only guess, but it seems that the CV mixer output voltage is too low - too "n
2012-12-05 by Stephen Richards
CW is wired to 0V ________________________________ From: " sasami@... " sasami@... > To: cgs_synth@yahoogroups.com Sent: Thursday, December 6, 2012 10:13 AM Subject: Re: [cgs_synth] CGS77 - Serge VCF Have you wired the CW terminal of the pot to -VE or 0V? Ken >Hi Ken > >I am just
2012-12-05 by sasami@hotkey.net.au
Have you wired the CW terminal of the pot to -VE or 0V? Ken >Hi Ken > >I am just troubleshooting the BOG panel and am having problems with the Serge VCF. > >When i move the Freq Pot the filter does not kick in until about the '1o'clock' point on the pot's travel. > >Below that po
2012-12-05 by Stephen Richards
Hi Ken I am just troubleshooting the BOG panel and am having problems with the Serge VCF. When i move the Freq Pot the filter does not kick in until about the '1o'clock' point on the pot's travel. Below that point , nothing. Everything else seems to be working , all ins and outs
2012-12-01 by Anders Sponton
I´ve got all my CGS pcb:s working, but no panels. How about that? I hope no drunk trip or another cold will stop my sound! Anders, Sweden http://rubidium.dyndns.org/cag/ ________________________________ Från: Stephen Richards okayjustalittle@... > Till: " cgs_synth@yahoogroups.co
2012-12-01 by Stephen Richards
It was the LM394. ;) ________________________________ From: Stephen Richards okayjustalittle@... > To: " cgs_synth@yahoogroups.com " cgs_synth@yahoogroups.com > Sent: Saturday, December 1, 2012 11:45 AM Subject: [cgs_synth] CGS48 VCO question Hi Ken and all I have had something f
2012-11-30 by Stephen Richards
Hi Ken and all I have had something fail on a working CGS48 VCO on my BOG panel build. It was working just fine ; when powered up the other day the output sounded no signal at all for about 12 seconds and then nothing but very high pitched output. Way above the range that it's su
2012-11-27 by Steve Inselman
Hi all, I am building the Cynare and everything is working except the VCF. The trigger will cause the filter to self oscillate for the duration of the env setting and every control works but the input is not working..? I tried external sound sources and it would not process the s
2012-11-21 by Stephen Richards
Cheers Ken ________________________________ From: " sasami@... " sasami@... > To: cgs_synth@yahoogroups.com Sent: Thursday, November 22, 2012 10:26 AM Subject: Re: [cgs_synth] CGS09 Rev 2 Divider/Comparator - Staircase connection The arrows on the pads indicate the direction. If
2012-11-21 by sasami@hotkey.net.au
The arrows on the pads indicate the direction. If the CMP writing is correct way up, it is as you say. >I have one more question on this regarding the CMP Pot pads on the board. > >Do i read the pads in the orientation of the CMP lettering ? So (on the PCB : Left - CCW , Middle -
2012-11-21 by Stephen Richards
I have one more question on this regarding the CMP Pot pads on the board. Do i read the pads in the orientation of the CMP lettering ? So (on the PCB : Left - CCW , Middle - Wiper , Right - CW ? ________________________________ From: charles kerr thebadproducer@... > To: cgs_synt
2012-11-21 by Stephen Richards
Thanks Charlie , I'm going with Down. ________________________________ From: charles kerr thebadproducer@... > To: cgs_synth@yahoogroups.com Cc: " cgs_synth@yahoogroups.com " cgs_synth@yahoogroups.com > Sent: Thursday, November 22, 2012 9:30 AM Subject: Re: [cgs_synth] CGS09 Rev
2012-11-21 by charles kerr
depends on what you fancy, I find the DOWN to be useful for wierd kick drum video game noises, the UP to be useful for wierd bubbling blippy video game noises! (It can obviously do other things) Charlie http://loudestwarning.tumblr.com/ --- On Wed, 21/11/12, Stephen Richards okay
2012-11-21 by Stephen Richards
Hi Ken and all Just doing the CGS09 on the BOG panel. In regards to the Staircase Which is the best pad to connect to here ? STUP or STDN ? [Non-text portions of this message have been removed]
2012-11-19 by Stephen Richards
Great Ken , many thanks. ________________________________ From: " sasami@... " sasami@... > To: cgs_synth@yahoogroups.com Sent: Monday, November 19, 2012 3:40 PM Subject: Re: [cgs_synth] CGS 29 Wave Multipliers question Us a 100k resistor in the location PWR. (if you have install
2012-11-19 by sasami@hotkey.net.au
Us a 100k resistor in the location PWR. (if you have installed 120k already, just leave it in.) Your second input is the pad marked PWP (Pulse Width Pot). Ken >Hi Ken and all > >I'm building up the BOG panel and have come to the Wave Multipliers. > >It's all done and sounds great
2012-11-18 by Stephen Richards
Hi Ken and all I'm building up the BOG panel and have come to the Wave Multipliers. It's all done and sounds great but there is a difference between the Diophantine Wiring Diagrams i am following and the BOG Panel itself i'd like to clear up. There is a second PWM input jack on t
2012-11-18 by Horse Legs
I have a set of three "Best of CGS" Serge style panels. BOG MARSH and SWAMP. I don't think I'll have time for these any time soon. Available for immediate delivery! $300 - Includes free U.S. shipping. Please contact off list. Thanks, -TF
2012-11-18 by Ove Ridé
Yeah, it's implied that Gnd and 0V are identical. (Well, there are sometimes intricacies in terms of how various ground points should be connected, but in this case you should just connect them.) However, it's not likely that the magic smoke was caused by that. Not conencting gro
2012-11-18 by fuyuhiko
Hi Ove. Having removed both ICs and replaced those to new ones, it now works properly! Thank you very much. One thing I wondered was on the schematic, there is no connections between 0V and ground, however, as it didn't work I connected it and seems fine. Is there any circuit whi
2012-11-18 by Ove Ridé
On 18 November 2012 10:16, fuyuhiko hiko_goldenballs@... > wrote: > Hi there. > This is not a question for the CGS circuits but is for an ADSR envelope > I've been making.This is the schematics. > > [ http://yusynth.net/Modular/Commun/ADSR/ADSR-V2-sch-thumb.gif%5d > http://yusynt
2012-11-18 by fuyuhiko
The 10Rs means 10 Ohm resisters for R1 and R2. Thanks --- In cgs_synth@yahoogroups.com , "fuyuhiko" wrote: > > Hi there. > This is not a question for the CGS circuits but is for an ADSR envelope > I've been making.This is the schematics. > > [ http://yusynth.net/Modular/Commun/AD
2012-11-18 by fuyuhiko
Hi there. This is not a question for the CGS circuits but is for an ADSR envelope I've been making.This is the schematics. [ http://yusynth.net/Modular/Commun/ADSR/ADSR-V2-sch-thumb.gif%5d http://yusynth.net/Modular/Commun/ADSR/ADSR-V2-sch.gif > Even though I've succeeded to make
2012-11-13 by nikmisnikmis
Wow, spot on! I feel dumb for not seeing it before. 10k resistor on IC5b was not connected. Thank you so much! --- In cgs_synth@yahoogroups.com , sasami@... wrote: > > Also check the input resistors along this chain. A too low a value or a > short would also have this effect. > K
2012-11-13 by sasami@hotkey.net.au
Also check the input resistors along this chain. A too low a value or a short would also have this effect. Ken >CA3080 is the same chip as LM3080. > >You have a problem with a feedback resistor somewhere. One of them is too >high a value, or has a bad joint. It could be the 100k
2012-11-13 by sasami@hotkey.net.au
CA3080 is the same chip as LM3080. You have a problem with a feedback resistor somewhere. One of them is too high a value, or has a bad joint. It could be the 100k around IC5a, any of the 10ks on IC5b,c,d, and possibly, but not likely, the 10k around IC4c. I would start with the
2012-11-13 by nikmisnikmis
Hello, I was wondering if anyone might give advice on my cgs29 Wave Multiplier build. It's a Version 1 Rev 2 board. I got it together this weekend, and I thought it was working correctly on the first power up. Now that I have played with it a bit, I realize there is something pro
2012-11-10 by spgjmf
hacked on my current Ulfo this morning - a 330pf cap gave me a nice audio range, I'll parallel switch this with a .0047 for bass. maybe rotatory switch to get the full lfo to audio range. slope knob makes from smooth to buzzy...nice pulse out is working again, bad solder joint...
2012-11-09 by sasami@hotkey.net.au
>Good to know. But what does monoblock mean? Just a normal cetamic cap? "Ceramic monolithic". These caps: http://www.futurlec.com/CapCerMono.shtml > >D > >Am 07.11.2012 um 03:39 schrieb "cg_synth" sasami@... >: > >> 1206 is the size of a surface mount part, so yes, SMD. Alternati
2012-11-09 by Pigeonmusik
Good to know. But what does monoblock mean? Just a normal cetamic cap? D Am 07.11.2012 um 03:39 schrieb "cg_synth" sasami@... >: > 1206 is the size of a surface mount part, so yes, SMD. Alternatively, you can use little leaded ceramic monoblock caps, and solder their leads to the
2012-11-09 by sasami@hotkey.net.au
I don't see any reason why it would not be stable. The parts of a VCO circuit that cause instability are in the voltage to current converter. The utility LFO doesn't have this section of circuitry at all! Ken >On 9 November 2012 00:28, spgjmf spgjmf@... > wrote: >> wow its been a
2012-11-09 by spgjmf
yep, looking for the drift and beats between the tones. ok, guess I order up some pcbs....Rich, what vclfo are you using? cross modulation is also fun, although my drone machines is more for turning knobs and riding the drift. while on the topic of the util lfo, - the pulse outpu
2012-11-08 by Stephen Richards
Here's some readings : Side by side Good VCO / Not working VCO , all knobs fully CCW. Saw Out : +3.5V varying to +3.8V / +3.3V steady Pulse Out : +0.8V varying to -1.5V/ +3.0V varying to +0.8V Freq Wiper Pad : -15V/-15V 1V/Oct In Pad : -0.68V/-4.5V Tune Pad : -1.16V/-0.97V Pin 7
2012-11-08 by Richarius Molindarius
Using a pair of them for a 'drone' could work out quite well. I've almost completed a noise machine here, based on 4 x Voltage Controlled Low Frequency Oscillators. Each of them, has the ability to modulate 2 of the other ones. (It's all hardwired, with attenuators for each modul
2012-11-08 by Ove Ridé
On 9 November 2012 00:28, spgjmf spgjmf@... > wrote: > wow its been a while....hi folks > > Im planning a drone voice and was thinking the utility lfo module would be > a simple oscillator if run at audio frequency. Anyone see a problem with > this? The freq is set by the 47n cap
2012-11-08 by spgjmf
wow its been a while....hi folks Im planning a drone voice and was thinking the utility lfo module would be a simple oscillator if run at audio frequency. Anyone see a problem with this? The freq is set by the 47n cap on the integrator, maybe make is 4.7n ? I can experiment. 2 lf
2012-11-08 by cg_synth
http://www.cgs.synth.net/modules/cgs775_vcs.html CGS755 is close enough to the BAN04R0 board. It's just a double sided version of the same thing. CYN14 and CYN06 have never been released publicly. The Steiner is more or less the same as the CGS35, but with the addition of a VC re
2012-11-08 by seanzoega
does anyone have schematics, PCB layouts for CYN06 Steiner Synthacon Filter CYNI4 ADsr Bananalogue vcS BANO4RO Thanks Sean
2012-11-07 by Stephen Richards
Yes , thanks Ken. I need a break from it but i'll get in there tomorrow. ________________________________ From: " sasami@... " sasami@... > To: cgs_synth@yahoogroups.com Sent: Wednesday, November 7, 2012 6:20 PM Subject: Re: [cgs_synth] Re: a couple of CGS48 VCO questions Your kn
2012-11-07 by sasami@hotkey.net.au
Your knobs and panel acting as an antenna suggests they are not connected to 0V. Specifically, I don't know where the fault/break is. I've never seen it before. As I mentioned before, you have a working example next to you. Set the knobs on the two to the same positions, then get
2012-11-07 by Stephen Richards
It's what i think too Richard , damned if i can find it though !! I'll get busy with the DMM and get back to you. ________________________________ From: " richmolindarius@... " richmolindarius@... > To: " cgs_synth@yahoogroups.com " cgs_synth@yahoogroups.com > Sent: Wednesday, No