The tracks and soldering look good.
I'm not sure but I think there may be a problem with the transformers.
I tried holding the output plug against the soldered pins on the back
of the pcb while two different signals were connected to the
middle and right jacks.
I found that the 14 pins in the middle(8 from diodes and 3 from each
transformer) all produced the signal from the middle input.
The two pins on the right produced the signal connected to the right
jack while the two pins on the left were silent.
So it seems like the signals are unable to pass through the
transformers, hence no multiplying and no output.
Let me know if my logic is backwards.
This is all new to me.
I'm not sure but I think there may be a problem with the transformers.
I tried holding the output plug against the soldered pins on the back
of the pcb while two different signals were connected to the
middle and right jacks.
I found that the 14 pins in the middle(8 from diodes and 3 from each
transformer) all produced the signal from the middle input.
The two pins on the right produced the signal connected to the right
jack while the two pins on the left were silent.
So it seems like the signals are unable to pass through the
transformers, hence no multiplying and no output.
Let me know if my logic is backwards.
This is all new to me.
--- In cgs_synth@yahoogroups.com, sasami@... wrote:
>
> What you are doing sounds correct.
>
> Check to see that a solder pad on the PCB hasn't lifted and that
none of the
> tracks have been broken while you were soldering.
>
> Ken
>
> >Ok, so the TP wire is going to the tip contact and the SL wire
> >is going to the shaft or ground contact.
> >One output from each oscillator is plugged directly into the left
> >and middle jacks of the RRing.
> >The jack on the right is plugged directly to an amp.
> >There's still no sound.
> >Well if i turn the amp all the way up I can hear the two
> >original tones very faintly.
> >The VCO output is very high though.
> >I barely need the volume up at all on the amp to get
> >good levels normally.
> >I must be missing something very basic here.
> >Is there anything else involved?
> >thanks,
> >-jay
> >
> >
> >
> >
> >--- In cgs_synth@yahoogroups.com, sasami@ wrote:
> >>
> >>
> >> >I have 3 switchcraft type jacks(different that the box ones in ken's
> >> >diagram) that have 3 places to connect wires.
> >> >The first connects to the shaft where the plug enters so i figured
> >> >that is the ground or the equivalent of SL?
> >> >The other two connect to parts that are touching but when a plug
> >> >enters the one piece(A) is forced away from the other.
> >> >I am guessing that (A) is the equivalent of TP?
> >>
> >> The one that is forced away should be TP (the TIP). The important
> >thing is
> >> it is the contact that stays touching the tip of the plug. The
> >output must
> >> be one of the outer pairs of connections.
> >>
> >> >Also, my vco sounds weird now without the ring modulator attached.
> >> >I figured since this was a passive device, no harm would come from
> >> >trying different wiring out. Was this wrong to do?
> >>
> >> If you shorted out the VCO douring your experiments it would not be
> >good.
> >> Also while the ring mod is a passive device, it is also a heavy
load -
> >> notably more so than most synth modules. If a synth module is
designed
> >> propperly, it will not have any permanent affect, but if a synth
> >module is
> >> poorly designed it is vaguely possible damage could occur, though
> >I've not
> >> heard of it happening with the real ring before.
> >>
> >> Ken
> >>
> >>
_______________________________________________________________________
> >> Ken Stone sasami@
> >> Modular Synth PCBs for sale <http://www.blaze.net.au/~sasami/synth/>
> >> 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@...
> Modular Synth PCBs for sale <http://www.blaze.net.au/~sasami/synth/>
> Australian Miniature Horses & Ponies <http://www.blaze.net.au/~sasami/>
>