Doepfer

I agree the quad envelope looks great and I would definitely buy it 
if it came out exactly as currently specified.

Having said that, would it be difficult to provide an end of cycle 
trigger?  And, could the envelope be made "unconditional," so that 
the attack cycle happens regardless of the trigger state?  These 
would open up lots of possibilities, if they could be easily added. 
Probably not a good idea if they would increase the size of the 
module.

I would also prefer all jacks on the left, particularly if they 
could be arranged vertically, 8 in a row (like on the multiple 
module) This would also open up space for other functions (see 
above).  However, this might require either a separate PC board for 
the jacks, or jacks on both sides of each PC.  Obviously, I'm just a 
user and I don't know if this is feasible.

--- In Doepfer_a100@yahoogroups.com, Bakis Sirros 
<synth_freak_2000@y...> wrote:
> 
> --- Dieter Doepfer <hardware@d...> wrote:
> > From: "Dieter Doepfer" <hardware@d...>
> > To: "Bakis Sirros" <synth_freak_2000@y...>
> > Subject: AW: [Doepfer_a100] Re: new pages for a143-1
> > quad envelope/lfo and a143-3 multi vc-lfo modules!
> > Date: Wed, 21 Jan 2004 11:22:47 +0100
> > 
> > Please forward
> > 
> > > -----Ursprüngliche Nachricht-----
> > > Von: selfoscillate
> > [mailto:synaptic_music@y...]
> > > Gesendet: Dienstag, 20. Januar 2004 12:55
> > > An: Doepfer_a100@yahoogroups.com
> > > Betreff: [Doepfer_a100] Re: new pages for a143-1
> > quad envelope/lfo and
> > > a143-3 multi vc-lfo modules!
> > >
> > > yes, a sum mix output with attenuator would be
> > nice.
> > > should still fit the 16 te width.
> > > a nice third option for the ad/lfo switch would be
> > > "triggered lfo", which means that the lfo only
> > runs
> > > when the gate input is high. another handy option
> > > would be, that the gate input also works as a
> > > retrigger input for the lfo.
> > >
> > > don't know if this is possible with the chosen
> > design,
> > > just some ideas.
> > 
> > We will see. I have to point out that due to the
> > design (555 timer circuit
> > used) the AD will in the 0...8V range (0 ... 2/3
> > supply voltage) and the
> > "LFO" in the 4V...8V range (1/3 ... 2/3 supply
> > voltage). So I'm not sure if
> > the sum will make sense. From my point of view AD
> > summing is not as
> > important as LFO summing. But in this case each LFO
> > contributes a 6V offset
> > (medium of 4V and 8V) to the sum output. The
> > provisional calculation is
> > based on the 555 timer circuit. To obtain an LFO
> > without offset we would
> > have to redesign the circuit completely (replace the
> > 555 by discrete
> > components with other features).
> > For the Gate and Reset feature I will see if this is
> > possible for the 555
> > design.
> > 
> > Best wishes
> > Dieter Doepfer
> > 
> > 
> 
> 
> =====
> Bakis Siros
> Parallel Worlds / Polariton
> Athens-Greece
> [Doepfer_a100] group owner
> http://www.rubber.gr
> http://www.ward12.com
> 
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