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2004-05-22 by sasami@hotkey.net.au
These Wimas sound just right for the job. IF you are going to "huge" caps like 470n, perhaps put a 33 ohm resistor in series to take stress of the CMOS chip. Ken >I'm ordering parts for the ASR. Found this mouser part: >505-MKP20.1/250/5. WIMA metallized polypropylene film. It ev
2004-05-22 by Larry Hendry
The stardard recommended cap is the 47nF IIRC. I used that one, and the stock op amp and I am less than satisfied with the droop. I plan to change the S&H op amp to a FET input amp TL071 and probably change the cap to a 100n. So, I think this you list below may be a good choice.
2004-05-22 by Richard Brewster
I'm ordering parts for the ASR. Found this mouser part: 505-MKP20.1/250/5. WIMA metallized polypropylene film. It even says, "suited for sample & hold circuits." I think this is the right type of capacitor, yes? Now this is a 100nf part. There is a discussion on Ken's web page ab
2004-05-22 by Richard Brewster
You can also add a third resistor to make a third CV input, but this resistor will have only one end soldered to the PC board. My Synthacon panel has a pot for initial frequency, an FM input jack with attenuator pot, and a second CV input jack that is roughly 1V/oct, following Mr
2004-05-22 by charlesosthelder
Sweet! Do you have a makeup amp after the RM? What kind of waveforms are used in this example? My transformers are on the way and diodes are matched and at the ready! Chub-distortion is my business --- In cgs_synth@yahoogroups.com, cgs_synth@yahoogroups.com wrote: > > Hello, > >
2004-05-22 by sasami@hotkey.net.au
>Under the LP and BP inputs on the PCB. It has 2 inputs for CV. I >guess the first is for the frequency. What is the second? Frequency too. One of them goes to the frequency pot. Ken _______________________________________________________________________ Ken Stone sasami@... or s
2004-05-21 by earthtodylan2000
Under the LP and BP inputs on the PCB. It has 2 inputs for CV. I guess the first is for the frequency. What is the second?
2004-05-21 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 : /SoundFiles/Real RM Demo 1.mp3 Uploaded by : mmarsh100 michaelmarsh@... > Description : Carrier and Modulatore doing their own thing You can
2004-05-21 by charlesosthelder
A little more detail- Mike used four 1N60 diodes and two of Mouser # 42XL002 transformers. This transformer has a 10K primary and 2K secondary. The transformer page in the new Mouser catalog is 576. Ken's recommendation of 42TM018 is about twice the size (still quite tiny at less
2004-05-20 by Mike Marsh
Hey All - Chub was good enough to send me some parts (xformers and diodes) so I put together the Real RM on perfboard. It works! It does sound different from my other ring mods (MOTM 110s) - not necessarilly better, but different and GOOD. One more arrow in the quiver. The value
2004-05-20 by sasami@hotkey.net.au
>Please correct me if I'm wrong. > >Frequency=100k ohm audio Linear, not audio >Resonance= 1k ohm audio probably not critical, but, I use linear. >HP} >LP } inputs 100k ohm linear each >BP} >Level= What do you all suggest? 100k to 200k >Should I buy the 2.5mm or 3.5mm jacks if I
2004-05-20 by earthtodylan2000
I'm getting closer to finishing my first cgs module. Bought the faceplate today. Now jacks and pots. Please correct me if I'm wrong. Frequency=100k ohm audio Resonance= 1k ohm audio HP} LP } inputs 100k ohm linear each BP} Level= What do you all suggest? Should I buy the 2.5mm or
2004-05-18 by sasami@hotkey.net.au
You want DIP packaging. DIP is the standard Dual-Inline-Packaging used on "through hole" pcbs such as those made by CGS. >hi i have a few questions on the modules > >for the psycho lfo it says lm358 >but in the catalog it says "dual op amp" >now then do i get the >8-SOIC/8-dip/8-
2004-05-18 by gininaandsage
hi i have a few questions on the modules for the psycho lfo it says lm358 but in the catalog it says "dual op amp" now then do i get the 8-SOIC/8-dip/8-sop/8-tssop? and for the 74c14 do i get the hex schmitt trigger inverter with 14-soic or 14-dip sorry if these are bad questions
2004-05-16 by bbluthang
i have this table of capacitor codes printed out and pinned to the wall by my bench. it may help - http://www.bobknarley.com/synth/capcodes.html @ --- In cgs_synth@yahoogroups.com , "earthtodylan2000" wrote: > Hello, > > The caps I reveived from Mouser say 0022MDF are those the >
2004-05-16 by sasami@hotkey.net.au
>Hello, > >The caps I reveived from Mouser say 0022MDF are those the >2n2? most likely, yes. >and the 100n(the one in the "box" on the pcb) is that a 0.1uf? yes. >I don't seem to undersatnd what "n" is with values. n = nano. nano = 1000 pico micro = 1000 nano Ken ________________
2004-05-16 by earthtodylan2000
Hello, The caps I reveived from Mouser say 0022MDF are those the 2n2? and the 100n(the one in the "box" on the pcb) is that a 0.1uf? I don't seem to undersatnd what "n" is with values. Thanks
2004-05-16 by sasami@hotkey.net.au
>I hope this site crash has not upset to much your projects ! Just a minor hickup :) >I must say those "preview" modules look very promizing ! In particular >the Random Switch and Analog Switch module. > >Just a remark concerning the analog switch, I had a very quick glance >at t
2004-05-16 by yves.usson@imag.fr
Hi Ken I hope this site crash has not upset to much your projects ! I must say those "preview" modules look very promizing ! In particular the Random Switch and Analog Switch module. Just a remark concerning the analog switch, I had a very quick glance at the schematic and noted
2004-05-15 by sasami@hotkey.net.au
>When it says something like "82R" or "390R" the resistor values >are 82 and 390 ? 82 ohms and 390 ohms. Yes. >And 2k2 is 2.2k correct? Yes. The symbol replaces the decimal point. >Also If I want to put a input pot for the LP BP and HP I should us >a 50k audio pot? I'd use a 100k
2004-05-15 by earthtodylan2000
Hi, A few questions... When it says something like "82R" or "390R" the resistor values are 82 and 390 ? And 2k2 is 2.2k correct? Also If I want to put a input pot for the LP BP and HP I should us a 50k audio pot? Thanks, Dave
2004-05-15 by sasami@hotkey.net.au
I've uploaded the modules section of the CGS site to the primary server. There are a few pages that really shouldn't be there yet, so consider them as previews. The rest ot the site will be uploaded later on. Ken ___________________________________________________________________
2004-05-15 by Julian
When accessing the secondary site, i got one of those 'do you wish to install / continue' type things from Gain. I should warn people of this, and point out that its certainly NOT a good idea to click OK to anything from GAIN. It is, i think, just one of those things you get with
2004-05-15 by Ken Stone
I am aware of the demise of the CGS primary site. Please use the secondary until such a time as the primary has been repaired - I don't even have access to it at the moment. Ken
2004-05-15 by sasami@hotkey.net.au
usually a week to two weeks. Sometimes an idiot postal worker will put an airmail parcel in sea mail, in which case things go out to three months. Other than that, there seems to be an active black hole in the post office system. Ken >LA CA actually. _____________________________
2004-05-14 by earthtodylan2000
LA CA actually.
2004-05-13 by sasami@hotkey.net.au
>Doesn't look like mouser carries any audio transformers that meet this >project's description. You could try 10k 10kCT e.g. 42TM018 Ken _______________________________________________________________________ Ken Stone sasami@... or ken@... Modular Synth PCBs for sale http://www.
2004-05-13 by Fahl, Romeo
Doesn't look like mouser carries any audio transformers that meet this project's description. %-----Original Message----- %From: earthtodylan2000 [mailto: earthtodylan2000@... ] %Sent: Thursday, May 13, 2004 1:43 AM %To: cgs_synth@yahoogroups.com %Subject: [cgs_synth] Re: real ri
2004-05-13 by earthtodylan2000
Does Mouser carry it and what's the part #? --- In cgs_synth@yahoogroups.com , "Mike Marsh" wrote: > I want one I want one I want one > > --- In cgs_synth@yahoogroups.com , "p.hendricks" wrote: > > I'd just like to add that Ken's Ring Mod sounds absolutely > fantastic! > > Curren
2004-05-12 by Mike Marsh
I want one I want one I want one --- In cgs_synth@yahoogroups.com , "p.hendricks" wrote: > I'd just like to add that Ken's Ring Mod sounds absolutely fantastic! > Currently, it's my favorite RM. > Personally, I prefer it's character over the AD633 & AD533 based ring mods, > I wou
2004-05-12 by p.hendricks
I'd just like to add that Ken's Ring Mod sounds absolutely fantastic! Currently, it's my favorite RM. Personally, I prefer it's character over the AD633 & AD533 based ring mods, I would say it's thicker and maybe more organic sounding. nice work Ken! thanks! best, -phil
2004-05-11 by sasami@hotkey.net.au
it is a 3k to 3k center tapped audio transformer. That's it. no model numbers, no brand etc. The one I have used is a miniature, though larger ones with the same impedance will work. Ken >i hate to bother you again but i cannot find the transformer you specified = >on the ringmod
2004-05-11 by eske500
i hate to bother you again but i cannot find the transformer you specified = on the ringmod site... i contacted three electronic-parts-stores and none of them could he= lp me finding it... can you specify it again ( maybe another way) or give an alternative to the= transformers?
2004-05-11 by sasami@hotkey.net.au
>The Nyle >Steiner paper that describes this VCF states that the an opamp can >replace the amplifier and the gain of that amplifier determines the Q of >the filter. Since some people have shown interest in a VC-Res mod, I >thought I'd ask what you think about replacing the 2n2222
2004-05-10 by Ryan Williams
ok, for the last few days I've been thinking of how to add VC-Res. I've got a few ideas, but I'd like to hear other people's opinions. 1. easiest (I dont' like it much). use a Vactrol in place of the res pot. This would be slow. 2. replace the 2n2222/2n2907 amplifier section of t
2004-05-10 by bbluthang
hello has anybody wired the dia-con to a gated comparator? i'm not sure which pins to connect to - of the 4015 outs, i want to have 3 'note' connections (pins 5,4,10?) and 2 to 'octave'(pins 13,2?). plus tie oct C to ground on the dia- con board. does this sound ok? also, i want
2004-05-10 by Ryan Williams
Richard Brewster wrote: > I finally got the dual Synthacon module all put together this weekend. > It is a unique filter. The band pass, especially. If you don't build > two, then you won't realize how, even with all the parts nominally the > same, two Synthacon filters will have
2004-05-10 by Richard Brewster
I finally got the dual Synthacon module all put together this weekend. It is a unique filter. The band pass, especially. If you don't build two, then you won't realize how, even with all the parts nominally the same, two Synthacon filters will have different characteristics. It m
2004-05-09 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 : /SoundFiles/DualSynthacons.mp3 Uploaded by : pugix pugix@... > Description : Demo of Synthacon Filters You can access this file at the URL ht
2004-05-09 by sasami@hotkey.net.au
Someone was waiting for some CGS04 Mixer PCBs. Please contact me again - I can't find your email! Ken _______________________________________________________________________ Ken Stone sasami@... or ken@... Modular Synth PCBs for sale http://www.blaze.net.au/~sasami/synth/ > Austr
2004-05-09 by sasami@hotkey.net.au
>> CGS stuff is 1V/oct > >Howabout the Synthacon filter? I don't see any calibration trimpots... It is more accurately described as "exponential". Using a 100k pot wired as a level pot before the VC input would allow the scale to be adjusted. If there isn't enough range, reduce t
2004-05-09 by Jay
on 5/8/04 11:23 PM, sasami@... at sasami@... wrote: > CGS stuff is 1V/oct Howabout the Synthacon filter? I don't see any calibration trimpots...
2004-05-09 by sasami@hotkey.net.au
> >i am looking to build some CGS modules but i have seveal questions , will it >be compatable with my (planned) Paia,Blacet frac-rack system ? will it use >the same power supplies ? will it still be 1v/oct ? i am sure that these are >redundant questions , thanks CGS stuff is 1V/
2004-05-09 by Dustin Sedlacek
i am looking to build some CGS modules but i have seveal questions , will it be compatable with my (planned) Paia,Blacet frac-rack system ? will it use the same power supplies ? will it still be 1v/oct ? i am sure that these are redundant questions , thanks Dustin _______________
2004-05-08 by Ryan Williams
hi all, I made some sounds with it for people to hear. Just incase your wondering, I didn't try to make it musical at all. Infact I'm trying to show the amount of distortion I get for a few different settings. mostly justing hitting different Cs. These are unfiltered inputs from
2004-05-07 by Larry Hendry
> 10 packs of resistors? I started buying 200 packs of the common > values. Only $4.00. The price drops to 2 cents each. > -Richard Brewster Me too. Now, I rarely have to buy a resistor because of the stock I built up ordering them this way. Why pay 9 cents when you can pay 2? :)
2004-05-06 by Richard Brewster
Bob Knarley's parts list for the Synthacon VCF is a good one. It's important to use good capacitors. The 23PS222 polystyene part especially. I used metalized polyester caps for the 1uf values that pass the signal, Mouser 75-MKT1826510064. Also, it is worth looking at the message
2004-05-06 by itsatwistah
The original article on the filter by Nyle Steiner can be found here: http://www-timc.imag.fr/Yves.Usson/personnel/SDIY/archives/Sallen-Key- 2P.pdf Cheers, Scott --- In cgs_synth@yahoogroups.com , Ryan Williams wrote: > earthtodylan2000 wrote: > > > With everyones help and good a
2004-05-06 by thee_vaporizer
> finally built me one about a week ago. When I get some time I'm going to > try and add CV to the Resonance. Still trying to analyze the circuit, > anyone have the circuit equations written down? > > --Ryan Most interested in that mod, keep us updated ! Does adding a potmeter fo
2004-05-06 by Ryan Williams
I haven't even tried to mess with the address lines yet. but I can tell you that you won't get close to that short of a delay using the chip like the datasheet shows. I will do some experiments with that, as well as disabling the write line once I'm happy with the bandwidth my ci