Cgs synth

>Here I am w/ another totally beginner question... I see a lot of
>people put in level pots for the inputs to the modules they are
>building (audio in, CV in FM level, etc). For me, since I will not be
>using all of these modules at once, I think I could save space and
>pots by building a seperate 'module' for level adjustment. Can I just
>wire up some pots w/ one side to an input jack, middle to an output
>jack, and other side to ground? Will this work to adjust the level
>for both audio and CV's?

It will work. Just add a 1k between the wiper and the jack, as a safety
measure in case you feed a signal into the "out" jack. (probably nothing
would happen without the 1k, but better safe than sorry)

>While Im asking, what do I use to split signals? I have asked this
>before, about just using a Y cable sort of thing. That does work, but
>I have also seen schematics for a simple op amp circuit that splits
>one signal into several. Is there a reason to use one over the
>other? is the opamp doing the same thing, but more precise?

Y cables and mults are fine, with the exception that a signal will droop if
the protection resistor in the output of the module is not in the output
driver's feedback loop. Wired correctly (i.e. resistor as part of feedback
loop), an op-amp splitter will stop this problem. Wired in the old standard
way, you'll be no better off.

Ken
_______________________________________________________________________
Ken Stone sasami@... or sasami@...
Modular Synth PCBs for sale <http://www.blaze.net.au/~sasami/synth/>
Australian Miniature Horses & Ponies <http://www.blaze.net.au/~sasami/>