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 Forum index » DIY Hardware and Software
Andy's Arp 4023 Oddy VCF layout
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ericcoleridge



Joined: Jan 16, 2007
Posts: 889
Location: NYC
PostPosted: Tue Jan 06, 2009 5:33 pm    Post subject: Andy's Arp 4023 Oddy VCF layout Reply with quote  Mark this post and the followings unread
Sorry if there's already a topic for this module, I couldn't find one.

I finished etching and assembling my 4023 two nights ago, but I'm still having a bit of trouble with it. Has anyone else successfully built one using Andy's layout?

Everything seems OK, all except the Resonance pot. On mine, the Res pot is just sort of doing the same thing as the Frequency pot. It's not self-oscillating, or increasing resonance as far as I can tell. It just seems to open and close the filter (like the Freq pot). I'm not quite sure what to troubleshoot for-- can anyone offer me a suggestion?
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etaoin



Joined: Jun 30, 2005
Posts: 761
Location: Utrecht, NL
PostPosted: Wed Jan 07, 2009 12:53 am    Post subject: Reply with quote  Mark this post and the followings unread
ericcoleridge wrote:
Sorry if there's already a topic for this module, I couldn't find one.


The filter is in this thread:
http://electro-music.com/forum/topic-28740.html
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