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 Forum index » DIY Hardware and Software » Ken Stone designs - CGS
syntacon vcf 2x9volt batteries
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synthesist



Joined: Feb 17, 2011
Posts: 79
Location: austria
Audio files: 2
PostPosted: Fri Jul 08, 2011 6:59 am    Post subject: syntacon vcf 2x9volt batteries
Subject description: maybe it's just impossible		 Reply with quote  Mark this post and the followings unread
hey!

I spent the last 3 days working on a stripboard-synthacon VCF. I took the orignal design from CGS homepage though.
There is a pretty loud sound coming out, but somehow the Cutoff pot doestn work. The resonance pot doesnt change the sound a lot. The pot that should control the TL071 amp stage does boost the low frequencies instead of the whole loudness.

Anyways...
Before I try to fix this circuit again I need to know one thing: Is it actually possible to power the circuit by two 9 volt batteries without changing some values of the resistors and other components?
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andrewF



Joined: Dec 29, 2006
Posts: 1176
Location: australia
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PostPosted: Sun Jul 10, 2011 3:36 am    Post subject: Reply with quote  Mark this post and the followings unread
not exactly the same but Houshu made a 9V version of the Steiner
schematic here

be warned - his stuff ususally needs some taming tho
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