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 Forum index » DIY Hardware and Software » MusicFromOuterSpace.com designs by Ray Wilson
WSG filter problem, excessive self ossilation?
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stolenfat



Joined: Apr 17, 2008
Posts: 476
Location: Sunny Oakland California
Audio files: 1

PostPosted: Mon Jan 11, 2010 3:57 am    Post subject: WSG filter problem, excessive self ossilation? Reply with quote  Mark this post and the followings unread

Well, building up another wsg for a larger project... i put it all together from spare parts so not every thing is exactly as it should it, but the basic functions are fine.

my problem is my resonance pot, its way over powered. At a full twist all i hear is the frequency accented by the resonance, just a loud whine, as i pull back the pot the freq drops and the rest of the wsg come into the audio out.

Would any one know why the resonance is going nuts?

the filter part is exactly as ray says, its even on one of his pcbs- only the 40106 components are different.

I remember the wsg rez pot being very cool and not so over powered, its like satanic self ossolation.

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stolenfat



Joined: Apr 17, 2008
Posts: 476
Location: Sunny Oakland California
Audio files: 1

PostPosted: Tue Jan 12, 2010 2:33 am    Post subject: Reply with quote  Mark this post and the followings unread

well either i had allways been doing it wrong and i finally did it right... ray does mention its very strong to accent the harmonics... so i just decided to run with it and rewired the entire filter section with various capacitors from one of the legs of the 741 to COF1 and boy... does that tweak it out. lots of really nice gnarly grunge.

THe ony thign is, i have this grunge filter set up to activate with a pot and when the filter kicks in it the output 'volume' increases significantly.. any way to smooth out the output signals to even out the various levels of signal?

I tried all sorts of stuff, but didnt want to build a special circuit just to 'compress/limit' the signals to even levels.

any ideas?

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