[sdiy] EFM VCF1E Question

tomg@efm efm3 at mediaone.net
Tue Apr 3 06:47:59 CEST 2001


Hey Romeo, I thought somebody explained...sorry.  Freaks you out huh!
Would it help if I told you I reversed the pair when I drew them for the
main-expo?   No? Ok I didn't think so..... so here's a pic that explains it.

If you still don't get it I'll explain long hand..;-)

http://groups.yahoo.com/group/EFM_Synth/files/modules/vcf1-expo-exp.gif

Tom



> Could someone look at this PDF and tell me if the Expo converter for the
> main filter in the schematic looks odd.  It seems to me that the
transistors
> are not connected correctly.  I've built one of these and it doesn't pass
> audio....
>
> http://groups.yahoo.com/group/EFM_Synth/files/modules/vcf1e.pdf
>
> Thanks,
>
> Romeo
>




More information about the Synth-diy mailing list