Re: [AH] rs350 mod

From Peter Grenader
Sent Thu, Jan 8th 2004, 03:54


The stock timing cap is a 100 nano (that's .1 uf).  If you insert one of
those two added as a smaller value rather than two larger ones, it will
create a faster charge and with it, a faster slew. But...a stock 350 set in
the lower regions of pot travel is really fast. It may be a moot point to
attempt to speed it up. In any event, you can play with your cap values
prior to committing them, it won't cause the circuit any damage.

hope this helps,


Thom Ash wrote:

> hi - this is mainly for peter grenader but i thought i'd put it on AH in
> case anyone else is interested...
> so, i read the post in the analogue systems yahoo group about modding
> the rs350 to give it a greater range of lag rates. this is interesting
> to me cuz i was considering getting one myself, but i was concerned that
> as it is the maximum rate of 100ms/V might be too slow for me (the stuff
> i come up with seems to be getting faster and faster at the moment >:D )
> i've only ever used a circuit like this as a portamento control in a
> monosynth and i'm used to being able to turn the rate up until the
> effect is pretty much inaudible. two questions then:
> 1) how hard would it be to do a (functionally) similar mod, except with
> the switch settings being 'fast', 'normal' and 'slow' instead of
> 'normal', 'slow' and 'uber slow'? the latter as described in peter's
> post sounds within my capabilities.
> 2) ok, not really a question but what do the rs350 owners out there make
> of this module, mainly in terms of what i mentioned above but also in
> general? you like?
> cheers!
> thom x