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 Forum index » DIY Hardware and Software » Ken Stone designs - CGS
Voltage Controlled Divider CGS09 -- weird module!
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andrewF



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PostPosted: Thu Aug 06, 2009 3:54 am    Post subject: Reply with quote  Mark this post and the followings unread

Laughing attack of the S***e clones
sorry - u need FPD for to view this one


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Luka



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PostPosted: Thu Aug 06, 2009 5:16 am    Post subject: Reply with quote  Mark this post and the followings unread

im on mac
but thanks anyway
ive got an idea of the controls now

andrew have you used this module much?
are you able to send fixed voltages to it to get set divisions or is it tricky?

i was thinking of having a rotary switch for divisions w/ fine tune pot and then cv in, but im just wondering if this is going to be too hard to achieve. is it better just to go with master divider

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andrewF



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PostPosted: Thu Aug 06, 2009 8:58 am    Post subject: Reply with quote  Mark this post and the followings unread

Quote:
are you able to send fixed voltages to it to get set divisions or is it tricky?

i was thinking of having a rotary switch for divisions w/ fine tune pot and then cv in, but im just wondering if this is going to be too hard to achieve. is it better just to go with master divider


I haven't tried fixed voltages to get set divisions, tend to feed it outputs from sequencers or EGs. This results in some pretty interesting sound mangling.

Your idea should work fine, as the divisions are set by comparing the voltage from the R/2R ladder and the CV voltage. The R/2R ladder can only output stepped voltages, so with the rotary switch and a fine tune pot it should be easy to tune your input CV to the necessary values to get the divisions you require.

Pretty good idea actually! Get more from your VC Divider Very Happy
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kkissinger



Joined: Mar 28, 2006
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PostPosted: Wed Jul 07, 2010 9:10 pm    Post subject: Another CGS09 Voltage Controlled Divider lives! Reply with quote  Mark this post and the followings unread

I just put the finishing touches on my CGS09 Voltage Controlled Divider.

Since I have Yusynth Clock Dividers (and plan to build more) I don't need precise control over the number of steps.

However this module has an unexpected benefit: It can do an inverted overtone series! Since the division is in integral amounts, one can start with an audio frequency signal and sweep it DOWN (i.e., octave, fifth, fourth, maj 3rd, min 3rd, etc...) by perfect intervals. This is really quite a shocking sound (at least to my ears).

I have some plans for the VC divider for clocking -- namely to create very long loops with pseudo-random "bloops and bleeps" that slowly evolve into rhythmic patterns or grooves. I like the idea of starting with seemingly unrelated fragments that coalesce into a structure over time.

Anyway, the CGS09 was an easy and fun build. I look forward to putting this module to use!

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ericcoleridge



Joined: Jan 16, 2007
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PostPosted: Mon Mar 28, 2011 9:16 pm    Post subject: Reply with quote  Mark this post and the followings unread

I've been waiting for Ken to restock this board for a while, I'm really looking forward to building one, particularly after reading the description of the Serge Divide by N Comp.
One of the uses it describes is as a timing event generator. One can take an audio event, derive a pulse from the comparator, and the divider will "wait"however many clock steps the division is set to before outputing a pulse.
I'm imagining micing a highhat playing 16th notes, for instance, and deriving a 1/4 note clock pulse to feed an arpeggiator or sequence in realtime. Seems like it could open up some interesting real- time timing possibilities.
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ericcoleridge



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PostPosted: Mon Mar 28, 2011 9:31 pm    Post subject: Reply with quote  Mark this post and the followings unread

andrewF wrote:
Laughing attack of the S***e clones
sorry - u need FPD for to view this one


Andrew, do you have many cgs modules designed in this style? I'm planning on making some "shop panels" for a lot of cgs circuits (like they do over at Muff), and I'm hoping someone had already made fpds for at least some of the panel designs that I need.
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andrewF



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PostPosted: Tue Mar 29, 2011 12:37 am    Post subject: Reply with quote  Mark this post and the followings unread

help yourself!

note:
my designs are not always consistent in terms of font and labelling.
there are multiple versions of the same modules
the "4X4" series have a lot of different CGS designs
they all are in the old Serge style of 6 holes per column at 1" spacing (easy for mass production)


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ericcoleridge



Joined: Jan 16, 2007
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Location: NYC

PostPosted: Wed Mar 30, 2011 8:32 am    Post subject: Reply with quote  Mark this post and the followings unread

Wow, Andrew, thanks very much for all of these panels! I have to confess, I hadn't had a chance to open the VC Divider yet, and was just assuming it was the newer S**** layout style. Although, thinking about it now, I do remember marveling at your finished panel photos in the 2010 Build thread.

Now, I'm not sure if I want to use the older or newer style, having access to all of your designs, plus all of the shapes and design motifs contained therein.

I'm curious though, were any of these designs modeled after specific modules, or did you just borrow the general look?

I haven't come across too many photo examples of the older S**** style panels for reference--have you found many sources (besides the CGS site, which I'm familiar with)?

Thanks again!
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andrewF



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PostPosted: Wed Mar 30, 2011 9:35 am    Post subject: Reply with quote  Mark this post and the followings unread

There doesn't seem to be a single site dedicated to vintage Serge.
The personal pages of various people that were there in the early days are a good source. ie - http://www.warrenburt.com/my-history-with-music-tech2/
Just about everything seems to end up on matrixsynth sooner or later
Also the early Serge manuals were good too.

Generally I have just copied the look, guess an early Serge has always been my dream synth....still is! Wink
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grantb



Joined: Jun 17, 2010
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Location: Oly

PostPosted: Sun Apr 03, 2011 2:57 am    Post subject: Reply with quote  Mark this post and the followings unread

Here's a cool early Serge front panel pic:

http://www.cyndustries.com/synapse/synapse.cfm?pc=35&folder=sept1976&pic=13

http://www.cyndustries.com/synapse/synapse.cfm?pc=35&folder=sept1976&pic=14

"Serge, the affordable synthesizer" thumb up


Edit: 1970 catalog

http://rxj.nl/synthesis/serge/serge1970catalog.pdf
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macumbista



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PostPosted: Sat Dec 17, 2011 6:35 am    Post subject: Reply with quote  Mark this post and the followings unread

I'm trying to wire this thing up like the Serge /N COMP. So I'm curious, is the output of the Clock Pulse Follower section the same as the output of the Comparator? Or is it affected by the Divide by N Detector? If I wanted just the raw output of the comparator, could I use this or would I need to take it directly from pin 7 of IC1B? Thanks!
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