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2005-04-25 by Jeff Foster
I have a 4 x4 banna to 1/4" jack converter made from a project box..I don't want to wast panel space.... -Jeff --- In cgs_synth@yahoogroups.com , Richard Brewster wrote: > Make your own Front Panel Express panel. > > http://www.frontpanelexpress.com/home/index.htm > > It won't co
2005-04-25 by brett x
Its both ;) and I heard one on the weekend and well its the next thing i'm building...very different to any filter i've heard...buy one!! ;) cya brett >From: dustin sedlacek dustin.sedlacek@... > >Reply-To: cgs_synth@yahoogroups.com >To: cgs_synth@yahoogroups.com >Subject: Re: [c
2005-04-25 by Richard Brewster
Make your own Front Panel Express panel. http://www.frontpanelexpress.com/home/index.htm It won't cost a lot if you don't put many panel engravings on it. -Richard Brewster boward_k wrote: >Looking for a 1/4-1/8 & 1/8-1/4 jack converter. >MOTM has the MOTM-940 patchpanel, are the
2005-04-25 by sasami@hotkey.net.au
>One question, Ken - the 4051 pin #8 is usually at 0V for a signal >swing from Vdd - Vee. In some cases, both pins 7 and 8 are at 0v. >Why did you use this bias arrangement with both #7 and #8 at the - >7vdc? I'm sure your reasoning is sound, I just want to learn. Actually ... my
2005-04-25 by boward_k
Looking for a 1/4-1/8 & 1/8-1/4 jack converter. MOTM has the MOTM-940 patchpanel, are there any other options? /Boward
2005-04-25 by sasami@hotkey.net.au
> >i do not understand that this thing does ...is it a filter ? a audio >source ? ..im confused So is it! It can be used as either. Ken _______________________________________________________________________ Ken Stone sasami@... or sasami@... Modular Synth PCBs for sale http://ww
2005-04-25 by dustin sedlacek
i do not understand that this thing does ...is it a filter ? a audio source ? ..im confused - Dustin On 4/25/05, charlesosthelder osthelder@... > wrote: > > Now this is COOL!!! > > Two multiplexers for very steep slopes and a real vco for control! I > can't wait to see this pcb i
2005-04-25 by charlesosthelder
Now this is COOL!!! Two multiplexers for very steep slopes and a real vco for control! I can't wait to see this pcb in the mail! Most switched capacitor filters utilize a single 4051, clocked by a 4046 VCO with a 4024 or 4040 divder. These are pretty popular for audio filtering i
2005-04-23 by sci700
Ah, now that's good news! expect order soon :) thanks /d --- In cgs_synth@yahoogroups.com , sasami@h... wrote: > Most should work without modification. The one that will need modification > for sure is the CGS48. This involves replacing a 20 resistor with a 14k > resistor to main
2005-04-22 by sasami@hotkey.net.au
Most should work without modification. The one that will need modification for sure is the CGS48. This involves replacing a 20 resistor with a 14k resistor to maintain a 5V reference. Ken > > >Hello, I'm wondering which of the CGS-modules will work with +-12v (with no or >minor m
2005-04-22 by sci700
Hello, I'm wondering which of the CGS-modules will work with +-12v (with no or minor mods(what mods..?)) and which must have +-15v? I'm asking because the rest of my DIY-stuff use +-12v and it's also nice to be able to put DIY-modules into the Doepfer system if i want to. (I just
2005-04-21 by sasami@hotkey.net.au
The old version used 8 100n. I believe the new one has space for an extra - it's just power rail decoupling. As for different sizes, I allow as much space for 100n caps as the board will permit. Sometimes there isn't space, so I just put in two holes at .2". If there is more spac
2005-04-21 by m0n075
Hi there I think i got my sub vco pretty done (it's a rev 2) But now there is a thing witch is unsoldered under the name CGS01 It says 100n and it's bigger then the other 100n spots. And if i count the part list then i come to 8 100n's. So i did them all but that one is still ope
2005-04-20 by sasami@hotkey.net.au
>If you've built the gated comparator without LED's, what resistor >values did you substitute on the emitter of the buffers? Option 1: Leave the resistors as is. Option 2: 10k to 100k. It isn't critical. Option 3: Replace the 1k resistors with links, and the LEDs with resistors o
2005-04-20 by charlesosthelder
Hi all! If you've built the gated comparator without LED's, what resistor values did you substitute on the emitter of the buffers? Thanks! Chub
2005-04-15 by Richard Brewster
I patch my 10V p-p synth outputs right into the line inputs on my mixer without any problem. The inputs have a pad attenuator that I just turn all the way down. -Richard Brewster sasami@... wrote: >>ok so , i can send a +/- 10v peak to peak signal through my audio mixer with >>ou
2005-04-14 by sasami@hotkey.net.au
> >ok so , i can send a +/- 10v peak to peak signal through my audio mixer with >out and damage ? or do i just not understand what you are saying ? No, those are modular synth standards. Audio signals tend to be 1v p2p. Ken >On 4/14/05, sasami@... sasami@... > wrote: >> >> > i kn
2005-04-14 by dustin sedlacek
ok so , i can send a +/- 10v peak to peak signal through my audio mixer with out and damage ? or do i just not understand what you are saying ? On 4/14/05, sasami@... sasami@... > wrote: > > > i know that their is a mod to make the CGS VCO a +/-5volt > >output. > > by the way, th
2005-04-14 by bbluthang
hi Adam just a suggestion - Steve Thomas charges about half of Schaeffer's prices http://monopole.ph.qmul.ac.uk/~thomas/synthdiy/cnc.htm you can just send him your FPD files. regards andrew --- In cgs_synth@yahoogroups.com , "Adam Schabtach" wrote: > > ..... by the way, anyone kn
2005-04-14 by Adam Schabtach
> ..... by the way, anyone know the BEST way to drill holes into a frack > rack > panel ? i was thinking that a machine shop would do the trick but i do not > know what the cost would be IMHO the BEST way to drill holes is to pay someone to do it with a CNC machine, that is, to u
2005-04-14 by bbluthang
> ..... by the way, anyone know the BEST way to drill holes into a frack rack > panel ? i was thinking that a machine shop would do the trick but i do not > know what the cost would be > -Dustin > > Hi Dustin the 'best' way is probably different for everybody. i get the impressio
2005-04-14 by sasami@hotkey.net.au
> i know that their is a mod to make the CGS VCO a +/-5volt >output. by the way, that is what the AC outputs are for on the original design. They level shif the signal down to be symetrical about 0V. ATSO is the wave shaper AC output while TSO is the one that sits up above 0V etc
2005-04-14 by sasami@hotkey.net.au
It's not as important as you may think. Well designed gear often connects together with no issues. I certainly mix a lot of brands with no issues. Occasionaly a designer will lack foresight and do something stupid like connecting a zener straight across an input, and onther will
2005-04-14 by ed.j.wise
i was talking with my friend about synths. and the question came up what are the standards ? and how do i mod my circuits to fit these standards ? i know that their is a mod to make the CGS VCO a +/-5volt output. but what about my other circuits that i am building ? i have a paia
2005-04-14 by dustin sedlacek
no not really ... basicly i was sticking to how grant from wiard lays his out, on two panels ..with six knobs and a maximuin of 12 jack ... similar to the waird , it has some distance between the jacks and controls this is a good layout link http://www.blacet.com/FPtyp.jpg and th
2005-04-13 by rdrake
I'm also working on fitting an all-options VCO into frac-rack format... even on a 1 1/2 width panel, I'm having trouble fitting all the controls and jacks. any sketches of your proposed panel layout to share? bbob >Date: Tue, 12 Apr 2005 11:27:01 -0500 >From: dustin sedlacek > du
2005-04-12 by dustin sedlacek
i will be using all options as well, ilike the idea for a switch for FM ....i was thinking of a putting jacks for the shaper and STI inputs also , i am using a fracrack format so that i will have 1/8' jacks for normalization on those inputs also On Apr 12, 2005 8:12 AM, charlesos
2005-04-12 by charlesosthelder
Any thoughts on how you'll be building up you next VCO? I intend to use all the options for mine, all inputs (though only one of each and switching for one jack between the DC or AC coupled FM), and all outputs. This will work within the MOTM 2U format nicely and give me some fea
2005-04-11 by laxt57@aol.com
Hi Cool Jeri [Non-text portions of this message have been removed]
2005-04-11 by sasami@hotkey.net.au
>- Hi Ken > I didn't think you were doing the V.C.O. boards(out of > production). Am I confused? > Jeri Out of stock, not out of production! As it is my only VCO, it will definitely be staying in production. Ken ____________________________________________________________________
2005-04-11 by Jeri
- Hi Ken I didn't think you were doing the V.C.O. boards(out of production). Am I confused? Jeri -- In cgs_synth@yahoogroups.com, dustin sedlacek wrote: > put me down for 5 of them > > On Apr 10, 2005 2:19 AM, sasami@h... wrote: > > > > Hi, > > > > they are over-due by about 2 we
2005-04-10 by dustin sedlacek
put me down for 5 of them On Apr 10, 2005 2:19 AM, sasami@... sasami@... > wrote: > > Hi, > > they are over-due by about 2 weeks. Apparently a spate of local holidays > has > delayed them. > > Ken, who needs one himself. > > > > > > > >hi ken ,and everyone else > > i am waiting o
2005-04-10 by sasami@hotkey.net.au
Hi, they are over-due by about 2 weeks. Apparently a spate of local holidays has delayed them. Ken, who needs one himself. > > >hi ken ,and everyone else > i am waiting on some VCO boards. as that is the next step in my >system . will they be soon ? can we get a estimated time ?
2005-04-10 by ed.j.wise
hi ken ,and everyone else i am waiting on some VCO boards. as that is the next step in my system . will they be soon ? can we get a estimated time ? 1 month ? 6 months ? 8 years ?
2005-04-07 by charlesosthelder
Ah, spring! A young man's thoughts turn to romance, but a middle-aged music electronics geek wonders, "what can I do to add functionality to my already wonderful Digital Noise module?" Here's what I've done to add two ouputs, though I'm sure you can come up with any number of ide
2005-03-30 by Dave Kendall
Hi I recently bought some very cheap 3.5mm Plugs and sockets at CPC (a division of Farnell) in the UK. http://cpc.farnell.com/jsp/home/homepage.jsp > Part no. AR70484 £1.15 ($US 2.16) Pack of 10 x plastic bodied mono 3.5mm Jack plugs, Part no. CN04252 £0.92 ($US1.73) Pack of 10 x
2005-03-30 by Sam Ecoff
I just bought a whole slew of Kobiconn 3.5 foot cables from Mouser. At $1.47 each, it seemed like a great price to me, especially considering that I was playing something like $1.90 for *each* 1/8" plug while I was making my own cables! They are molded, so when they go, you'll ju
2005-03-30 by z_flash_ram
Hi, Would anyone point me to a source to buy 3.5 mm cables (in increments Excuse my OT, please. Thanks, Chris
2005-03-29 by marcel01011
Hi, thanks for the reply, yup, i used the 2n2222 & 2n2907; any chance i fried them when i reversed the power supply? I'll check it like you suggested with a higher res pot. When this "works" (other res pot); it means i have too much gain in the output stage, yeah? which component
2005-03-28 by sasami@hotkey.net.au
Were the specified transistors used? It sounds like you have too much gain in the output stage. Try replacing the 1k pot with something higher and see if it makes a difference. Ken >hi, i've recently built the steiner vcf; but it hasn't been working >properly. when i first tested
2005-03-28 by marcel01011
hi, i've recently built the steiner vcf; but it hasn't been working properly. when i first tested it i connected the power backwards, and now when i use it it constantly oscillates even with resonance turned completely down. the sound is like a standard feedbacked signal, loud, a
2005-03-26 by sasami@hotkey.net.au
> >richard you said "As for the low frequency limit, the VCO core will go >quite low with >negative VC inputs." isnt this the same as through zero ? No. With through zero, the frequency climbs again. The frequency for 1V is the same as for -1V, however the phase is reversed. Ken
2005-03-26 by dustin sedlacek
richard you said "As for the low frequency limit, the VCO core will go quite low with negative VC inputs." isnt this the same as through zero ? On Fri, 25 Mar 2005 19:18:02 -0500, Richard Brewster pugix@... > wrote: > Yes, in fact I made several mods. I should upload my schematic
2005-03-26 by dustin sedlacek
i should check the archives ....something that i didnt think of ...i am sure that many of my unanswered questions are there ... i am a bit new to the DIY scene so pardon me if i am oblivious On Fri, 25 Mar 2005 21:31:09 -0500, Richard Brewster pugix@... > wrote: > The sawtooth is
2005-03-26 by Richard Brewster
The sawtooth is +/-5V (10V p-p) with the mod I made. I found this old post in the archives: 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 / 60
2005-03-25 by Richard Brewster
Yes, in fact I made several mods. I should upload my schematics to show all the changes, but I just moved to a new house and the computer with my drawing program is still packed up along with my modular synth. I changed the sawtooth output to be +/-5V, and drove the pulse wave co
2005-03-25 by charlesosthelder
--- In cgs_synth@yahoogroups.com , dustin sedlacek wrote: > speaking of the VCO - anyone made any mods to it ? > Dustin Check the archives, Dustin. Both Ken and Richard Brewster have made some suggestions. I'll be using Richard's resistor mod for a sawtooth output centered on zer
2005-03-25 by dustin sedlacek
speaking of the VCO - anyone made any mods to it ? On Thu, 24 Mar 2005 14:20:52 -0000, charlesosthelder osthelder@... > wrote: > > Hi all! > > I've got two VCO pcb's on order and am getting the parts together > (yes, I'll get a US parts list together!)for an all-the-options setup
2005-03-25 by Adam Schabtach
> > NO!!! The NTE parts NEVER worked! Read my last post - I've got a > > trace on a small cache of 4006's. I could have 50 next week! No > > minimum order - heck, no order! I give you one > > Yes, I wrote that. I'm wrong - I actually just finished testing the > last five 4006's I
2005-03-25 by charlesosthelder
> NO!!! The NTE parts NEVER worked! Read my last post - I've got a > trace on a small cache of 4006's. I could have 50 next week! No > minimum order - heck, no order! I give you one Yes, I wrote that. I'm wrong - I actually just finished testing the last five 4006's I have. Two R