Hi Michael,
If you're measuring 12.5V on pin one of the LM358, your problem is
there. Check to see if all the resistor values are correct and all
solder joints are nice and shiny.
If you used a different chip here, replace it with the correct LM358.
There's a notice on Ken's page:
"Do not replace the LM358 with another type. It was chosen for its
ability to drive down to its negative rail."
Hope this helps,
Michael Ford
--
http://www.metalbox.com
If you're measuring 12.5V on pin one of the LM358, your problem is
there. Check to see if all the resistor values are correct and all
solder joints are nice and shiny.
If you used a different chip here, replace it with the correct LM358.
There's a notice on Ken's page:
"Do not replace the LM358 with another type. It was chosen for its
ability to drive down to its negative rail."
Hope this helps,
Michael Ford
--
http://www.metalbox.com
On Dec 28, 2007, at 10:36 PM, prophei wrote:
> --- In cgs_synth@yahoogroups.com, "prophei" <prophei@...> wrote:
> >
> > i still can't figure this out. ugh. i am certifiably baffled by
> this one. :)
> >
>
> anybody have any other idea's? still no cv activity at all. sound
> just goes straight through... no
> vca action, no changes with cv... etc
>
> thanks!
>
> p.s. just build the wave multiplier... WOW that thing is beautiful! :)
>
>
>