Yahoo Groups archive

Doepfer

Index last updated: 2026-04-29 00:15 UTC

Message

AW: a185-2 [Doepfer_a100] some new ideas

2007-05-21 by hardware@doepfer.de

> Hi phil,
>
> I suggested a few weeks ago (and others did also before me) a module unity
> gate mixer to add triggers/gates for building complex patterns, etc.  For
> this kind of module you need as much inputs as you can, but also precision
> is not required.  So my need for a version without attenuator comes from
> this.  It's also apparent that a precision CV adder answer a
> different need
> than the unity gain mixer I'm looking for and there's certainly a
> place for
> both.
>
> When I suggested the unity mixer:
> "Something like 7 INS to 1 OUT with no attenuators"
>
> Dieter answered :
> "Such a module is already available as a prototype but I did not want to
> overcrowd our Messe news. We call it a high precision adder as
> the CV inputs
> are added up with exactly 1.00 amplification (...)"
>
> So this is why I'm getting my "no attenuator" suggestion back.
>
> Sylvain

For adding/combining gate or trigger signals a precision CV adder can be
used but would go over the top. In the precision adder a lot of manually
selected resistors (selected to 0.1% precision) and active electronics with
operational amplifiers is used and will contribute to the price of the
module. A module for the combination of gate/trigger signals could be
realized much easier without active electronics: nothing but e.g. seven
sockets connected to an eighth socket via diodes. Such a module could be
manufactered much cheaper (same price range as a multiple).

Maybe we will have to add more simple modules for all these jobs (like
switched multiple, gate/trigger combiner, manual gate, precision CV adder).

Best wishes
Dieter Doepfer

Attachments

Move to quarantaine

This moves the raw source file on disk only. The archive index is not changed automatically, so you still need to run a manual refresh afterward.