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2007-10-30 by Scott Deyo
Sounds good, Tim. Nice to hear from you! All is good here, keepin' busy! : ) Cheers, Scott Deyo The Bridechamber contact@... www.bridechamber.com On Oct 30, 2007, at 2:56 PM, timothy cooper wrote: > Hey there senior! I've really been too busy over the last 6 months or > so and ha
2007-10-30 by timothy cooper
dern it, meant for that to go to Scott and not the group! Sorry y'all. ~Tim timothy cooper shari_en_jin@... > wrote: Hey there senior! I've really been too busy over the last 6 months or so and havn't been doing much diy'in but life is slowing down a bit for fall and I've got a c
2007-10-30 by timothy cooper
Hey there senior! I've really been too busy over the last 6 months or so and havn't been doing much diy'in but life is slowing down a bit for fall and I've got a couple projects to work on, so I'll take about 20 or 30 just to have around. Hope the biz is bustlin' and life's goin'
2007-10-30 by Scott Deyo
hello all, i'm about to buy way too many 1/4" jacks for my (immediate) needs, so i'm putting the call out. they are used by modcan, and are just the same as switchcraft 112a (mono switched). i think they'll be $.75 each (half the cost of switchcraft). if anyone's interested, let
2007-10-27 by Jeff Foster
hi all, I just completed the dual lfo. nice module, even and sweet. I added a .1uf cap with the stock cap to get slooow sweeps. I put a pic up in the phot section, under Jeff's synth. thanks Ken for a great design. kepp on patching, Jeff
2007-10-26 by sasami@hotkey.net.au
>Would that be true also for the cgs27 tube vca..? Not sure on that one. It's only running with one power rail across the tube, while CGS65 has both across the tube. Ken > >/Daniel > > > >--- In cgs_synth@yahoogroups.com , sasami@... wrote: >> >> It should, but with slightly degr
2007-10-26 by sci700
Would that be true also for the cgs27 tube vca..? /Daniel --- In cgs_synth@yahoogroups.com , sasami@... wrote: > > It should, but with slightly degraded performance. > > Ken > > >Has anybody tried running the CGS 65 Tube VCA at +/-12V? > > > >Looking at the schematic, everything
2007-10-26 by Jeff Foster
--- In cgs_synth@yahoogroups.com , sasami@... wrote: > > > >I just populated the lfo board and was looking for pots. > >I have 1m lin post - will these work for the shape control (stock is > >500k)? They wouldbe neat because they have center detents. > > Probably will work fine.
2007-10-25 by sasami@hotkey.net.au
>I just populated the lfo board and was looking for pots. >I have 1m lin post - will these work for the shape control (stock is >500k)? They wouldbe neat because they have center detents. Probably will work fine. It may stall at either end. I can't be sure. >also - anyway to have
2007-10-25 by Jeff Foster
hi folks, I just populated the lfo board and was looking for pots. I have 1m lin post - will these work for the shape control (stock is 500k)? They wouldbe neat because they have center detents. also - anyway to have a switch to change between normal and ultra low cycle rate? smo
2007-10-23 by sasami@hotkey.net.au
>Ken, are there any of your designs that just will not operate at +/-12V? I can't think of any that won't run on +/-12V. >These look to be operable at 12V with some R changes, am I correct? >CGS64 VCA >CGS26 Analog Logic voltage processor They may not even need any changes at all
2007-10-23 by Anthony Rolando
Ken, are there any of your designs that just will not operate at +/-12V? I am looking to order some more of your boards to put into a Doepfer suitcase for touring. These look to be operable at 12V with some R changes, am I correct? CGS64 VCA CGS26 Analog Logic voltage processor R
2007-10-23 by sasami@hotkey.net.au
Range will affect the offset with the circuit as shown. If you want the offset to be totally independent of range, reverse the power connections to the offset pot, and connect the wiper via a 47k to pin 6 of the op-amp instead of pin 2. Pin numbers given as per my diagram: you'll
2007-10-22 by rafe127
Hi all, I am working on the joystick circuit from here: http://www.cgs.synth.net/modules/joystick.html and I have a few questions about it... it doesn't seem to be behaving as expected. I am using a TL074 as the op amp. The range control at minimum causes the joystick's travel to
2007-10-22 by sasami@hotkey.net.au
It should, but with slightly degraded performance. Ken >Has anybody tried running the CGS 65 Tube VCA at +/-12V? > >Looking at the schematic, everything around the tube would seem to be fine at +/-12V. > >But the tube, I am not able to even guess at this... any comments will be g
2007-10-22 by Anthony Rolando
Has anybody tried running the CGS 65 Tube VCA at +/-12V? Looking at the schematic, everything around the tube would seem to be fine at +/-12V. But the tube, I am not able to even guess at this... any comments will be greatly appreciated! Thanx, Tony ______________________________
2007-10-21 by sasami@hotkey.net.au
The PCB is the older version, which is linked from the text in the first paragraph of the web page. You can either build it as per the PCB or use 100k everywhere the board says 47k. Either way will work. Ken >hello! > >i got a number of the cgs04 mixer pcb's and noticed that a wh
2007-10-21 by prophei
hello! i got a number of the cgs04 mixer pcb's and noticed that a whole row of resistors are marked as 47k, while the schematic shows them as being 100k. i assume that i should follow the schematic, but just wanted to verify that the pcb is in error... thanks!
2007-10-13 by Dave Kendall
Cheers Ken. Testing Ahoy! Dave On 13 Oct 2007, at 01:16, sasami@... wrote: > You will be fine leaving pins 1 and 2 in the swapped position. No harm > will > come to the tube. > > Ken > > >Hi > > > >I've built a green REV 1.1 board, and plan to include a DPDT toggle > to > >switch
2007-10-12 by sasami@hotkey.net.au
>i saw those pads and wondered if they were for surface mount, but never read any >information referring to your use of them. >that was confusing! do any of your online materials for this filter mention any of this? Some do, but I think I forgot to updated the bandpass :( Ken ___
2007-10-12 by sasami@hotkey.net.au
You will be fine leaving pins 1 and 2 in the swapped position. No harm will come to the tube. Ken >Hi > >I've built a green REV 1.1 board, and plan to include a DPDT toggle to >switch between dirty and clean. >As per the info on the CGS site, either the 330K resistor and solid >l
2007-10-12 by Dave Kendall
Hi I've built a green REV 1.1 board, and plan to include a DPDT toggle to switch between dirty and clean. As per the info on the CGS site, either the 330K resistor and solid line link *OR* 330K in the unlabelled slot and the broken line are connected. ( someone posted here a whil
2007-10-12 by prophei
ohhhhhh, now i get it!! i saw those pads and wondered if they were for surface mount, but never read any information referring to your use of them. that was confusing! do any of your online materials for this filter mention any of this? maybe you might want to add this =) i will
2007-10-12 by loopcycle
Hi Richard! I did recieve my gated comparator panel as I ordered it. They must have made two and sent you one. (I just responded to Karen...thanks for the reminder) And I would be interested in seeing your IO design :) Hans --- Richard Brewster pugix@... > wrote: > Front Panel Ex
2007-10-12 by sasami@hotkey.net.au
>i see no unicorn, are we looking at the same board revision? No. The very latest has the 100nF capacitors mounted on the back of the PCB. There are pairs of little square pads. They are designed for surface mount 100n caps, though there is nothing to stop you attaching regular o
2007-10-12 by prophei
> > Hi Prophei. > > Maybe check the 4K7 resistor that goes between "RE" on the schemo and > GND?. > Yesterday I just tested an orange REV1 board using a 5K trimmer there > to see what happened... :-) > It worked fine - with a trimmer value less than around 2.7K the > resonance re
2007-10-12 by prophei
> The positions for the two 100n caps are near the lower chip, to its left, > when the pots are to the right of the PCB. They are power rail decoupling. these are 2 electrolytics labeled as 10uf, unless you are referring to the 2 beads? > There is a single jumper just below the u
2007-10-11 by Jason Proctor
>You do have some sort of construction error, or less likely, a part failure. >Resonance definitely works. i can vouch for the bandpass filter PCB. i recently built 4 of them 100% stock with no mods and then stacked them in a parallel config as described on the module page. i did
2007-10-11 by Dave Kendall
Hi Prophei. Maybe check the 4K7 resistor that goes between "RE" on the schemo and GND?. Yesterday I just tested an orange REV1 board using a 5K trimmer there to see what happened... :-) It worked fine - with a trimmer value less than around 2.7K the resonance really got intense,
2007-10-11 by sasami@hotkey.net.au
>the parts list on ken's page calls out 2x 100n caps as being used, yet i only see a few 10uf >electrolitics and 22n's noted on my pcb board. there is no more room for caps on here, so >what were those called out for?? The positions for the two 100n caps are near the lower chip,
2007-10-11 by prophei
hello all, i just put together my first cgs30 bandpass filter (rev2), and can't seem to notice any resonance at all. i can sweep it just fine, and there is maybe a "slight" ring in there somewhere... but the resonance pot does nothing. having built more complicated modules before
2007-10-11 by Richard Brewster
Front Panel Express messed up and sent me somebody else's panel. It was a CGS Gated Comparator with large LED holes (MOTM Lumex size). Your invoice number was 313513. I sent your panel back to FPE. They say you didn't respond back to them, so they are making my panel again. I had
2007-10-09 by sasami@hotkey.net.au
I would expect the losses to be in the transformer core - in how far you can magnetise them. Something you can try is to feed the lower of your two frequencies into the carrier (center) connection. The carrier input will work right down to DC as there is no transformer involved.
2007-10-09 by Richard Hoffmann
--- Andre Majorel aym-htnys@... > wrote: > I think that's to be expected. Transformers are > inherently AC > devices. They can't pass very low frequencies. OK, I did a test using a MOUSER Tm018 1:1 transformer (connecting cables directly to both sides), and indeed there is a bass
2007-10-09 by djbrow54
At 500 mV, no amount of gain is going to help your transistor. There simply isn't enough voltage to bias the transistor on. You need to change the rolloff frequency. Changing the value of the capacitor or resistor will do that. I couldn't figure out why I wanted a high pass filte
2007-10-08 by Richard
Hi, I recently received Kens ring modulator board. While it works/sounds fine, I noticed that I have some bass frequency loss. Even when using a very low carrier frequency, say 10 Hz or lower (ie essentially amplitude modulation) it is clearly audible compared to the dry signal.
2007-10-08 by Anthony Rolando
Dave, your description makes alot of sense. When I look at what is happening on my scope I am seeing the VCO hi-pass filtered until there is almost no amplitude. I measured the frequency and mine really starts to lose amplitude at 20hz and is less than 500mv by 17hz. The 100n cap
2007-10-08 by djbrow54
It'a a high pass filter and eventually it will roll off so that the transistor is not ever biased on. Mine rolled off somewhere below 15 Hz. At 5 Hz the drive was 400 mV, well below Vbe required to bias the transistor. That's why I changed to a level shifter by dividing the signa
2007-10-07 by sasami@hotkey.net.au
>I've tried all the mods I've read for the ASR with little to no >change. I'm trying yet another brand of polystyrene caps before I give >up. Perhaps try adding 47pf across each of the op-amps in the TL074 in case there are stray oscillations. Add 10uF directly across the power r
2007-10-07 by Jan-Ahrent Czmok
hi all, having some stuff for sale, as i'm cleaning up my boxes... - lots (maybe 25) make and female 6,3mm plugs - 16 SMD tantal (farnel 856-8804) - korg power supply - alesis faze w/220V powersupply - eml101 vcf frontpanel for motm - 2 x dg412-dj - 2 x dg408-dj - maybe 100 pcs o
2007-10-07 by Richard Brewster
I listened to your MP3s and heard a little blip on each clock, even though the input did not change. Something is wrong with your ASR. I just patched this up myself and I hear no blips or wiggles at all. The output voltage and corresponding VCO pitch remain steady as long as the
2007-10-07 by peng3002
Since you guys have an ASR up and running, perhaps you could help me with a question of my own. Are you getting slight shifts at the outputs. I posted an example and a text file under the Files section of the group. Also, do the SH opamps get kinda hot? How about the TL074? I get
2007-10-07 by Anthony Rolando
4091. I do not think it is the FET. The signal maintains a pretty constant amplitude for the entire range of the the oscillator. It is onlt AFTER the 100n coupling cap that the amplitude is lost. Tony ________________________________> To: cgs_synth@yahoogroups.com > From: contact
2007-10-07 by Anthony Rolando
4091. I do not think it is the FET. The signal maintains a pretty constant amplitude for the entire range of the the oscillator. It is onlt AFTER the 100n coupling cap that the amplitude is lost. Tony ________________________________> To: cgs_synth@yahoogroups.com > From: contact
2007-10-07 by contact@bridechamber.com
Just out of curiosity, what FET transistor are you using? Scott ----- Original Message ----- From: Anthony Rolando To: cgs_synth@yahoogroups.com Sent: Saturday, October 06, 2007 8:32 PM Subject: RE: [cgs_synth] Re: Bi N Tic question >Basically I was loosing amplitude of the > sig
2007-10-07 by sasami@hotkey.net.au
>I am just curious why this was happening. It probably comes down to the one significant variable in the area- the gain of the transistor. Perhaps you have one with poor gain, where as I was testing one with exceptional gain, the difference between the two extremes thus not being
2007-10-06 by Anthony Rolando
>Basically I was loosing amplitude of the > signal through the capacitor at > below the threshold of the transistor. This is exactly the problem I am having. I did not measure the freqency at which it is occurring, but it is definitely at a low frequency (below 20hz). I have the
2007-10-06 by Anthony Rolando
This is a revision 1.2 brd. Ken. Tony ________________________________> To: cgs_synth@yahoogroups.com > From: sasami@... > Date: Sun, 7 Oct 2007 06:54:08 +1000> Subject: Re: [cgs_synth] Re: Bi N Tic question>> Be aware the PCB should have been corrected since Richard found that e
2007-10-06 by sasami@hotkey.net.au
>I've just finished wiring my gated comparator and I've got problems. >I cant get past stage one--I get leds lit on stage one and the output. > >1. My board says "rev 1". Is this *not* the rev 1.1? (do i need the >mod?) Current boards say "rev 1". I should make the text clearer.
2007-10-06 by loopcycle
I've just finished wiring my gated comparator and I've got problems. I cant get past stage one--I get leds lit on stage one and the output. 1. My board says "rev 1". Is this *not* the rev 1.1? (do i need the mod?) 2. I'm using an LM358n on the board. I'm aware that a tl072 is a b