Finally picked up the project again and the problem was simply a overheated point that created a cut... I really need to get a clean soldering pin.
Beautiful distortion. Thank you.
Beautiful distortion. Thank you.
--- In cgs_synth@yahoogroups.com, sasami@... wrote:
>
>
> >My main worry is:
> >Might this be a op amp problem?
>
> Possibly. Is the signal louder at pin 5 of the opamp? If it is, you
> definitely have a problem. You should be able to increase the gain of the
> opamp by putting a lower value resistor in the Gain Adust reisitpr position.
> (See the schematic)
>
> >Can using low quality capacitors be a problem as well?
> Probably not. They would have to be attrocious to the point of being faulty.
>
> Ken
>
> >
> >--- In cgs_synth@yahoogroups.com, sasami@ wrote:
> >>
> >> I connected mine up to +/-12 volts today, without midification, though I do
> >> have an adjustable plate currrent on my module. I was using line level
> >> signals. It worked without issue.
> >> One fellow who was using hotter signals was finding some distortion that
> >> differed from when running on +/-15 volts.
> >>
> >> Try reducing the filament current limiting resistors from 1k5 to 1k2, and
> >> putting a 20k pot in series with the 8k2 plate resistor.
> >>
> >> Ken
> >> _______________________________________________________________________
> >> Ken Stone sasami@ otherunicorn@
> >> Modular Synth PCBs for sale <http://www.cgs.synth.net/>
> >> Australian Miniature Horses & Ponies <http://www.blaze.net.au/~sasami/>
> >>
> >
> >
> >
> >
> >------------------------------------
> >
> >The CGS Modular Synth home page: http://www.cgs.synth.net/
> >Yahoo! Groups Links
> >
> >
> >
> >
> _______________________________________________________________________
> Ken Stone sasami@... otherunicorn@...
> Modular Synth PCBs for sale <http://www.cgs.synth.net/>
> Australian Miniature Horses & Ponies <http://www.blaze.net.au/~sasami/>
>