If the span trimmer is not right, the VCO may be too sensitive to CV and to
the tuning pot.
Ken
used a 2N3904 matched pair instead of the LM394. I think that my vco is
working, but i can't really use the initial freq pot. It must be always
in its center position if i want to hear the vco. Is it normal ? I only can
tune the vco using the fine pot... In a post here, i've seen i could
change the 1m resitor to a 2,2m one, and i did this change, but it just
affect the fine tune pot, no the intial one. What should i check ? thanks
for any help ! jean
Ken Stone sasami@... otherunicorn@...
Modular Synth PCBs for sale <http://www.cgs.synth.net/>
the tuning pot.
Ken
>Hi Everybody ! That's my first post here, as after building severalmodules, i think i've got some problems to fix on my cgs48. I've
used a 2N3904 matched pair instead of the LM394. I think that my vco is
working, but i can't really use the initial freq pot. It must be always
in its center position if i want to hear the vco. Is it normal ? I only can
tune the vco using the fine pot... In a post here, i've seen i could
change the 1m resitor to a 2,2m one, and i did this change, but it just
affect the fine tune pot, no the intial one. What should i check ? thanks
for any help ! jean
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Ken Stone sasami@... otherunicorn@...
Modular Synth PCBs for sale <http://www.cgs.synth.net/>