Cgs synth

Were the specified transistors used? It sounds like you have too much gain
in the output stage. Try replacing the 1k pot with something higher and see
if it makes a difference.

Ken

>hi, i've recently built the steiner vcf; but it hasn't been working
>properly. when i first tested it i connected the power backwards, and
>now when i use it it constantly oscillates even with resonance turned
>completely down. the sound is like a standard feedbacked signal, loud,
>and high-pitched. when i turn the cutoff i can heare some filtering
>through the screaming feedback though.
>The tl071 is still fine, and i've checked+reflowed the solder joints;
>my question is, any of you smart people know where the problem most
>likely would be/ where i should start troubleshooting?
>should i replace (test?) transistors, caps?
>
>any help is welcome
>
>cheers, marcel

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