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 Forum index » DIY Hardware and Software » Ken Stone designs - CGS
Anyone have a working UTILITY EG?
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numbernone



Joined: Aug 16, 2006
Posts: 477
Location: new york city

PostPosted: Wed Apr 25, 2012 9:37 am    Post subject: Anyone have a working UTILITY EG? Reply with quote  Mark this post and the followings unread

This is giving me a real headache now.
Using 1M pots as 2m2 are pretty foreign over here in USA
With recommended values, the ADSR cycle is very short at all settings, with a 1uf cap at C.
Doubling to 2uf makes it not work properly AT ALL. just goes totally haywire. Gonna keep at it. All the variable values are on sockets for now, but I just cannot get handle on this thing so far.

Anybody have a nice working one that might throw some values at me? Thanks!
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andrewF



Joined: Dec 29, 2006
Posts: 1174
Location: australia
Audio files: 4

PostPosted: Wed Apr 25, 2012 3:50 pm    Post subject: Reply with quote  Mark this post and the followings unread

I have built 2 with 1M pots and 1uF caps, plus switches to put another 1uF in parallel.
both work fine, I cannot understand why people are not more excited about this design. It is a great ADSR, the retrig function is fun.

Possibly installing & removing components has lifted a tab or two?

At least is the attack pulse working? that would eliminate problem solving half of the cct.
Is it the same problem on both modules?
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numbernone



Joined: Aug 16, 2006
Posts: 477
Location: new york city

PostPosted: Wed Apr 25, 2012 3:54 pm    Post subject: Reply with quote  Mark this post and the followings unread

Only wired one so far, using it as the test prior to finalizing resistors and such into the second.

Gonna clean up my workbench and reattack it later tonight.

Also yes this seems like it is gonna be great and economical.
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aladan



Joined: Aug 13, 2011
Posts: 49
Location: Australia

PostPosted: Mon Apr 30, 2012 6:40 pm    Post subject: Reply with quote  Mark this post and the followings unread

andrewF wrote:
I cannot understand why people are not more excited about this design. It is a great ADSR, the retrig function is fun.

I have one, love it! Like you say, a bit fast with the 1M pots but nevertheless a rock solid, easy to build, straightforward and useful module.
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