Hello Olix, I'm not sure what's your question... So my attempt to
answer it might fail. (There are manuals for each and every module
only on Doepfer's HP.)
Again, an VCA does not amplify (The A133 is in some respects a very
usual exception.) The common task of an VCA is to attentuate. E.g.
patch an VCO into the signal input of an otherwise unpatched VCA (gain
= 0): The signal is perfectly attentuated. Now, comes in the CV-
controll. Patch an enelope to one of it's CV inputs; say repetive
short decays and you have a percussive line. The repeated sound of the
VCO coming from the VCA should be about the same volume as they were
on leaving the source (VCO). (Gain opened fully clockwise + no CV
patched into CV1 of the A130 you'll have about the same unattentuated
level as it is at the source.)
The volume peak of the repetitive sound is determined by the decay
envelope and with all it's peaks at the same level. This could be
considered boring. Thus before the decay env. is patched into the VCA
CV-in you patch it into the Signal In of a 2nd VCA while the Signal
Out goes to the 1rst VCA. The level of the decay can be controlled
with another CV-source e.g by the random output of the A118.
TIA, Ingo

--- In Doepfer_a100@yahoogroups.com , "o_lix" <orenoir@...> wrote:
>
> Ingo, I don't understand waht you mean as both A130 & A134 have 2 CV
> ins...
> Is it really useful to amplify CVs
> Sorry for such questions but this will be clearer for me when I have
> the modular in front of me !
>
> Regards,
>
> Olix
>