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 Forum index » DIY Hardware and Software » MusicFromOuterSpace.com designs by Ray Wilson
MFOS SVF LM13700 Question
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surgesg



Joined: Jun 05, 2010
Posts: 19
Location: San Diego, CA
PostPosted: Sat Jun 05, 2010 10:38 am    Post subject: MFOS SVF LM13700 Question Reply with quote  Mark this post and the followings unread
Hello,

I'm currently troubleshooting an MFOS SVF I built. All of the filter types work, but the resonance pot has no effect. Tracing the signal through the feedback pathway, I found that it ended at pin 7 of U6 - a LM13700. This is the input to the transistor buffers, and there's no audible signal coming out on pin 8.

Should I be hearing the signal coming out pin 8?

Thanks,

- Greg
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