TL082 for an LM358?
2004-04-02 by Mike Marsh
Hi All - Can I substitute the TL082 for the spec'd LM358 in the DC Mixer. They seem to have the same specs and pinouts... Thanks! Mike
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Re: Simple Wave Folder
2004-04-02 by itsatwistah
100% agreement! It folds in different ways than the Wave Multiplier, so they kind of complement each other. It's an amazing little circuit. I like your implementation! I took two copies of the Vactrol frequency control circuitry from the Buchla 291 Bandpass filter and used them t
Simple Wave Folder
2004-04-02 by Mike Marsh
Hey All - In case you haven't yet heard, this little guy is the total bomb. A veritable cornucopia of timbre eminates from the OUTs using a triangle in. I've got a panel coming that I will use to front the SWF, and Oakley LFO and Ken's DC Mixer. The idea is to mix the LFO out and
Re: SuperPsycho question
2004-03-25 by sasami@hotkey.net.au
>I'm building my SuperPsycho, but having trouble finding 1meg pots that fit >my form factor (i want all 6 of the individual speed controls vertically in >a fracRack format). Could i use 100k pots, if i upped the 2 caps by a >factor of 10 (from 220nf/2.2uf to 2.2 uf/22uf)? And wha
Re: Power connections
2004-03-25 by Larry Hendry
Right Andrew. The right gauge wire for the connector should not be stripped at all. I agree. Larry H --- ixqy@... wrote: > I'm not sure how everyone else is doing it, but with the last > rolls of wire I bought (which seemed to be the proper fit for the > MTA-156), I didn't strip
SuperPsycho question
2004-03-25 by R. Drake
I'm building my SuperPsycho, but having trouble finding 1meg pots that fit my form factor (i want all 6 of the individual speed controls vertically in a fracRack format). Could i use 100k pots, if i upped the 2 caps by a factor of 10 (from 220nf/2.2uf to 2.2 uf/22uf)? And what ab
Re: Power connections
2004-03-24 by ixqy@aol.com
Hi, I'm not sure how everyone else is doing it, but with the last rolls of wire I bought (which seemed to be the proper fit for the MTA-156), I didn't strip the wire at all. I think the insulation serves as sort of a minimal strain relief, and also helps to keep the wire in place
Re: Power connections
2004-03-24 by Dave Hylander
At 10:27 PM 3/24/2004 +0000, you wrote: >Ok, I received the MTA156 connectors/dust covers and the 18AWG from >Mouser- I also bought the plastic $22 "tool" to aid in stuffing the >wire into the plug. >A first attempt, I stripped an end of wire, twisted it a bit, and was >able to p
Re: Power connections
2004-03-24 by z_flash_ram
Ok, I received the MTA156 connectors/dust covers and the 18AWG from Mouser- I also bought the plastic $22 "tool" to aid in stuffing the wire into the plug. A first attempt, I stripped an end of wire, twisted it a bit, and was able to place it (by hand) into an MTA slot fairly eas
Demo files of drum synths?
2004-03-24 by Jim Johnson
Hi all - I'm thinking about building some of the drum synth modules - particularly the Cyndrum - but would like to hear them first. Does anyone have any recordings they'd care to share? TIA
Re: Power connections
2004-03-22 by z_flash_ram
Thanks for all the info, Mouser made another sale. Chris > I've tried a few 100ft. rolls in this price range (Mouser and Digikey have > them as well), but the insulation thickness didn't match up to the MTA-156 > connector very well. The MTA156 connector accepts 18AWG wire, with
Re: Power connections
2004-03-20 by ixqy@aol.com
In a message dated 3/20/04 5:54:53 PM Central Standard Time, liquidcolor@... writes: > Unicorn Electronics (www.unicornelex.com) has 100ft rolls of 18ga at > $7.85. I've tried a few 100ft. rolls in this price range (Mouser and Digikey have them as well), but the insulation thickn
Re: Power connections
2004-03-20 by liquidcolor@earthlink.net
Unicorn Electronics (www.unicornelex.com) has 100ft rolls of 18ga at $7.85. > On Mar 20, 2004, at 4:28 PM, ixqy@... wrote: > > > Hi, > The wire I ordered from Mouser recently are part numbers: > > Mouser# 566-9918-100-02 > 18AWG UL1007 RED > > Each of these 100ft. rolls was $18.7
CGS07 Gate Sequencer stuffed boards For Sale!
2004-03-20 by citizen207
I've got stuffed Gate sequencer boards - just the basic 3, no preset or CV boards. $25. I know this is the same price as Ken is selling them bare. Just think of this: I am saving you parts, and especially the EFFORT and TIME to stuff and solder all those transistors and diodes! c
Re: Power connections
2004-03-20 by ixqy@aol.com
Hi, The wire I ordered from Mouser recently are part numbers: Mouser# 566-9918-100-02 18AWG UL1007 RED Mouser# 566-9918-100-09 18AWG UL1007 WHT Mouser# 566-9918-100-10 18AWG UL1007 BLK Each of these 100ft. rolls was $18.75 ea. and seems to be identical to the wire that is used in
Re: Power connections
2004-03-20 by Dave Hylander
At 08:55 PM 3/20/2004 +0000, you wrote: >If anyone suggests a DIY approach, what guage of wire and what is >the "female" part that would be attached? Any part #'s would be cool. MOTM uses: (Mouser#) The wire is 18 AWG 571-6404264 AMP MTA .156 Plug 571-6405514 AMP MTA .156 Dust Co
Power connections
2004-03-20 by z_flash_ram
Hi, I'm ready to go to the next level and I need a source to either build or buy standard MOTM/CGS power "wires" (+15,0,0,-15) that connect from my MOTM power distribution board to the individual modules. If anyone suggests a DIY approach, what guage of wire and what is the "fema
Re: CGS VCO
2004-03-16 by Richard Brewster
Ah, that explains it. I wanted a +/-5V sawtooth output. Also, I DC-coupled the sawtooth to the square-wave comparator, so as to have no lower limit on frequency of the square wave. This required the symmetrical sawtooth as well. -Richard Brewster sasami@... wrote: >>I do have a q
Re: format advice
2004-03-16 by Larry Hendry
Another factor to consider is the availability of already designed and available panels in the MOTM format. Many people have built these in the MOTM format and have panel files that can be used to buy Schaeffer / Front Panel Express panels. Also, Many of Ken's circuits (and the l
Re: format advice
2004-03-16 by sasami@hotkey.net.au
>Hi there, > >I'm about to take at shot at assembling some modules and am >trying to decide on whether or not to make the panels MOTM style >with the 1/4" jacks or the more compact type like Blacet. I like the >idea of a more compact system but I'm concerned that I'd find the >la
format advice
2004-03-16 by eblake_smith
Hi there, I'm about to take at shot at assembling some modules and am trying to decide on whether or not to make the panels MOTM style with the 1/4" jacks or the more compact type like Blacet. I like the idea of a more compact system but I'm concerned that I'd find the lack of sp
Re: CGS VCO
2004-03-15 by sasami@hotkey.net.au
>I do have a question for Ken. The sawtooth buffer amp shows a 330K >feedback resistor and a 240K bias on the schematic. I inserted pots and >adjusted to get a +/-5V sawtooth. The values turned out to be exactly >200K / 600K, just like the ASM-1. This is also just what you would
Re: CGS VCO
2004-03-15 by sasami@hotkey.net.au
>I do have a question for Ken. The sawtooth buffer amp shows a 330K >feedback resistor and a 240K bias on the schematic. I inserted pots and >adjusted to get a +/-5V sawtooth. The values turned out to be exactly >200K / 600K, just like the ASM-1. This is also just what you would
Re: CGS VCO
2004-03-15 by Richard Brewster
Yes, actually. I got my first VCO board running on the bench yesterday. I am building two of these, without the waveshaping circuits. Mine only has the sawtooth and square outputs. It has coarse and fine frequency pots, an FM input that switches between exponential and linear, an
CGS VCO
2004-03-15 by Bob
So, has anyone got one of these VCO's up and running yet? I am really curious to hear the what people think about the waveshaper, sub osc features, and overall sound. I am working on making one up for my system, but I can't decide if I want to add the kitchen sink or just keep as
Virus warning.
2004-03-10 by Ken Stone
Someone who is subscribed to CGS_SYNTH has a worm/virus on their system. Please check your computers. Ken
Re: steiner VCF weak levels
2004-03-07 by peng3002
Replaced the level pot link with a 390K. Works great. Now, the frequency pot mods... thanks for the help, Peng --- In cgs_synth@yahoogroups.com , "jeff brown" wrote: > You need to increase the negative feedback resistor for the TL071. The schematic shows an optional link (or an e
Re: Saw pitch shifter problem
2004-03-07 by sasami@hotkey.net.au
Is your input signal too weak? If it isn't high enough to get the LED to light, it isn't high enough to cause the comparator to operate, so basically nothing will happen. Check around the input buffers for wrong value components. Ken >My saw pitch shifter doesn't seem to do anyth
Re: gated comparator stuck
2004-03-07 by sasami@hotkey.net.au
In order for the output to be around 15V, there MUST be a short circuit. It may be internal to one or more components, or on the PCB - an etching fault (like a hair lice copper bridge under the solder mask) or a soldering bridge. Is the LED lit? It should be introducing a voltage
Re: steiner VCF weak levels
2004-03-07 by jeff brown
You need to increase the negative feedback resistor for the TL071. The schematic shows an optional link (or an external level pot) and a 47k resistor. I left the 47k in and replaced the link with a 300k resistor (found by experiment). This gave a reasonable output level in both o
Re: gated comparator stuck
2004-03-06 by peng3002
Spoke too soon. Output 5 still stuck on and it outputs 15V ( the other outs put out around 11V. note: worked perfectly when I originally finished the module. The problem didn't arise until I switched all the 2.2K resistors to 15K (to make the LEDs dimmer). Do you think it's a bad
Saw pitch shifter problem
2004-03-06 by peng3002
My saw pitch shifter doesn't seem to do anything. The up down outputs are pretty much the same as the inputs (no shifting). Also, I tried to set it up to do pitch shifting according to the web page but using the disable switch I can't get any action on the LED. Any help greatly a
steiner VCF weak levels
2004-03-06 by peng3002
Just finished the Synthacon VCF and it kind-of works. I get very weak signal at the output (about 1/4 of what it should be)(kinda sounds like putting a signal through a mixer without the op amp). The resonance and all the controls seem to function properly. Any ideas anybody? scr
Re: CGS VCO?
2004-03-06 by Jeffrey Pontius
On Sat, 6 Mar 2004, j_inform3r wrote: > Has anyone built the VCO yet? One person that I know of (me). And one person that *will be* (not me, but who is a Kitchen Sinker :-) ). > anybody know if the Waveshape is CV variable? You can use cv on the sine-saw waveshaping section. I wo
Re: Digital Noise
2004-03-06 by Scott Stites
Hi Ken, Yeah, now that I examine it closer, they really aren't different. What threw me off (other than a misplaced wire) was a pinout that I found showing pin 2 as the only connection for D1+4 (where the original data sheet had it as 'no connection') before I found the Thomson d
Re: Digital Noise
2004-03-06 by sasami@hotkey.net.au
As far as I can tell, the pin-out is the same. The only difference is in the labels. One brand labels them D1 D2 etc, while the other uses a number that actually relates to the stage number in the shift register. For what it's worth I appear to have used a HEF4006 by SGS in one o
Re: Digital Noise
2004-03-06 by Scott Stites
Wow, thanks Dave! I'm sure it will help. Cheers, Scott ----- Original Message ----- From: "hitchindave" davekendall@... > To: cgs_synth@yahoogroups.com > Sent: Saturday, March 06, 2004 1:37 PM Subject: [cgs_synth] Re: Digital Noise > --- In cgs_synth@yahoogroups.com , "Scott Stit
Re: Digital Noise
2004-03-06 by hitchindave
--- In cgs_synth@yahoogroups.com , "Scott Stites" wrote: > Does anyone have a datasheet for the MC14006? > > Take care, > Scott > One is on it's way to you as a .pdf attachment. Hope it helps. Cheers, DaveK
Re: Digital Noise
2004-03-06 by hitchindave
--- In cgs_synth@yahoogroups.com , "Scott Stites" wrote: > Does anyone have a datasheet for the MC14006? > > Take care, > Scott > One is on it's way to you as a .pdf attachment. Hope it helps. Cheers, DaveK
CGS VCO?
2004-03-06 by j_inform3r
Has anyone built the VCO yet? It looks like a great project. Also, anybody know if the Waveshape is CV variable? cheers, John
Re: Digital Noise
2004-03-06 by Scott Stites
Talk about serendipity - last night I decided to try some ideas I've had for the 4006 shift register, so the first thing I did (to make sure I had it running right) was to hook some LED's up to the outputs and watch what they did. It definitely *wasn't* working right. To make a l
Digital Noise
2004-03-06 by liquidcolor@earthlink.net
Just finished building my proto Digital Noise. Great module. http://metalbox.com/hardware/jpg/diginoise.jpg
Re: gated comparator stuck
2004-03-05 by peng3002
Couldn't find any shorts or wiring errors. Reheated solder joints for transistor, buffer area. Problem solved. Thanks for you quick responses, Ken. --- In cgs_synth@yahoogroups.com , sasami@h... wrote: > >The 5th output on my gated comparator is stuck on. Any ideas ? > > Check fo
Re: gated comparator stuck
2004-03-05 by sasami@hotkey.net.au
>The 5th output on my gated comparator is stuck on. Any ideas ? Check for a wiring error either around the resistor/capacitor coupling betweent he two halves of the 4051, or look for a short around the buffer transistor on the fifth stage. Ken ____________________________________
gated comparator stuck
2004-03-05 by peng3002
The 5th output on my gated comparator is stuck on. Any ideas ?
Re: Bright LEDs and the gated comparator
2004-03-04 by sasami@hotkey.net.au
Increase the value of the 1k between 0V and the LED to 10k. Ken >I built the Gated comparator with bright blue LEDs. Real bright, they >make spots before my eyes ! On other modules I simply tie a 39K >resistor to the LED and it dims nicely. The G. Comp is different in >that there
Bright LEDs and the gated comparator
2004-03-03 by peng3002
I built the Gated comparator with bright blue LEDs. Real bright, they make spots before my eyes ! On other modules I simply tie a 39K resistor to the LED and it dims nicely. The G. Comp is different in that there is the output jacks connected with the LED. Will tying this extra r
msg to Ken Stone about private email
2004-02-29 by drmabuce
Hi Ken (sorry to use the CGS post to reach you but...) I have made several attempts to reply to your last email but some server in the return path keeps rejecting my reply because it identifies me as a spammer. Not Guilty! ;'> your emails are getting to me, if you have an alterna
Re: Aluminum Panels (pics)
2004-02-25 by bbluthang
--- In cgs_synth@yahoogroups.com , "z_flash_ram" wrote: > Andrew, > So does each briefcase have its own powersupply? > Chris > hi Chris hopefully each case will have its own 1A psu ....and maybe little wheels. to mount the panels, hmm i have a thing for hinges. at the moment i'm
Re: Aluminum Panels (pics)
2004-02-24 by z_flash_ram
Andrew, So does each briefcase have its own powersupply? Chris > hi Chris > i guess the CGS/Serge influence is easy to see. > the panels are 260mm by 180mm. i'm planning to build them into > largish briefcases - 4 panels to a lid. gotta be mobile. > andrew