Come on.You have a modular synthesizer. Experiment!
I'm getting a bit worried about the ongoing trend on this list.
The trend of people wanting modules that have all the options build in.
Too much build in features are beyond the scope of a modular.

Independant feedback input might be nice but is not really crucial:
It's just as simple as putting a mixer module before the input of that
specific module.
Putting your input signal in one channel. And then split the output of the
module to a 2nd channel of that mixer and to where it needs to go next in
the patch.
The channel level of the modules output determines the feedback/resonance
amount. This works on filters without resonance (fi. A128) or on delays.

I've been checking the delay capabilities of the a112 out and here are some
of the results:
http://www.xs4all.nl/~eloo999/doepfer/

I'm playing around with feedback in examples 2,3,4. Example 1 is just to
show the static delayline without feedback.
In example 4 I change delaytime with putting an A145 into the CV input of
the A112. Some of it is not very pretty but it works.

Patch is A110 + A118(white noise) >>>> A131
A131 is modulated by an A140 that is triggered by an A146. (this results in
some rhythmbox-snaredrum-like sound for these example purposes only)

This is split to the left channel of my recording device and the other
output from the split goes into an a138 mixer.
This is fed into the A112 (which is in delay mode). The output of this is
split into the right channel of my recording device and the outer output of
the split goes to channel 2 on the a136 mixer. Level of channel 2 is now the
FEEDBACK LEVEL.

If you want to voltage control the feedback level you can put the level fed
back into channel 2 through a VCA that you control with anything you like.

Like I said before try this on a fixed filter also, you'll be amazed!

/rant out

Greetings,

Ernst

On Fri, Aug 15, 2008 at 12:43 PM, Richard Scott < richard_scott@... >wrote:

> I haven't used a delay with an independent feedback output before. What
> are the consequences of this Can it be used to modulate the amount/length
> of feedback
>
> a module where it is not possible to modulate the feedback with CV seems a
> bit boring
>
> Richard
>
>
> ----- Original Message -----
> From: selfoscillate
> To: Doepfer_a100@yahoogroups.com <Doepfer_a100%40yahoogroups.com>
> Sent: Thursday, August 14, 2008 11:36 PM
> Subject: 1 Re: VC controlled delay
>
> --- In Doepfer_a100@yahoogroups.com <Doepfer_a100%40yahoogroups.com>,
> <hardware@...> wrote:
> >
> > > I would be interested in a cheap/affordable VC 8 bit or perhaps 12 bit
> > > delay. For the fancy stuff I would use Max/MSP anyway. So please
> keep it
> > > low cost.
> >
> > That's one of our main targets for this module. We try to keep it in the
> > Euro 100 range without VC feedback, VC mix or VCF. The voltage
> control of
> > feedback, mix and low pass filter will increase the sales price by about
> > Euro 25 each.
> >
> > Best wishes
> > Dieter Doepfer
> >
>
> hello dieter,
>
> it is a good idea to keep the price in that area.
>
> imho it would be great if you could add insert jacks
> for the feedback path, that shouldn't be too expensive
> but it makes a big difference for patching.
>
> best wishes
>
> ingo
>
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