Hi DIeter,

My comments are inline.

--- In Doepfer_a100@yahoogroups.com , <yahoo@...> wrote:
>
> > Is there, or will there be a [support] forum for the DIY kit
> > Administrated or not by Doepfer.
> >
> > If there isn't, anyone considering it
> >
> >
> > And...
> > Why is there no initial gain on the VCA
> >
> >
> > cheers,
> > _g


> We have no plans for a DIY kit forum.

Then someone should take that initiative. (not me though, no time)
If only to exchange ideas, wiring diagrams, mods, etc...


>And I have to point out that the DIY
> snth board is not planned for beginners. Electronic experience is required
> to make a working synth from the board.

Of course. No problem.


> Take a look at the (preliminary) manual of the DIY synth (www.doepfer.com >
> NEWS > DIY Snyth > manual). Here you will find the information that for all
> CV and audio inputs even the summing nodes are available (not only the usual
> CV inputs with weighting resistors). This allows to expand the number of CV
> our audio inputs. This is valid also for the CV input of the VCA. You may
> add e.g. one control for initial gain, one for ADSR modulation, one for LFO
> modulation and even an external control input is possible.
>
> Another remark concering the initial gain of a VCA: we had a lot of troubles
> with the initial gain control of the Dark Energy . A lot of units were sent
> back to us our our dealers/representative for repair. All had the same
> "fault": they generated a permanent tone. The customers overlooked the
> initial gain control as it's not a very common feature.

"Initial Gain" is not a common feature [on a VCA]
Hmm, I beg to differ. A VCA w/o initial gain is not a VCA, IMHO.
Actually, I don't even know of any VCA's w/o initial gain... :-)

I think I'll just wire some rail voltage to a pot and then to the VCA's summing node.

thanks, Dieter.

_g


> In the meantime we
> added a corresponding remark in the user's manual and on our website (FAQ
> page). But nevertheless now and then "faulty" Dark Energy units are sent
> back because of this feature.
>
> Best wishes
> Dieter Doepfer
>
> P.S. I'm not in the office from tomorrow (March 30,2010) until Easter. So I
> will not be able to answer to questions in this forum.
>