> -----Ursprungliche Nachricht-----
> Von: Doepfer_a100@yahoogroups.com
> [mailto: Doepfer_a100@yahoogroups.com ]Im Auftrag von James Husted
> Gesendet: Dienstag, 16. Dezember 2008 19:22
> An: Doepfer_a100@yahoogroups.com
> Betreff: 1 Some ideas for modules to go with the A-138m
> Matrix Mixer.
>
>
> I was thinking of the proposed A-138m Matrix Mixer and thought of some
> helpful additions and features to add to it.
>
> I earlier made the suggestion of adding a ribbon connector header to
> the input lines so that 2 or more units could be chained/linked to
> make 4x8, 4x12 etc arrays. I think it would be good to also add a
> header for the output columns also so that the matrix could be
> normalized in that axis to another A-138m or to the proposed A-135-2
> Quad Filter Panner Mixer. The A-135-2 looks like a killer modules but
> is a bit too much for me so I think a simple 4-in stereo mixer module
> would be a great compliment to the matrix mixer. It would be a simple
> module with no voltage control needed. four inputs each with level and
> pan, a master level out (this could be 2 pots if that is cheaper than
> a dual pot) and left and right outs. If the cost allows a low power
> stereo headphone monitor (something simple like the output module of
> the Oberheim 2-voice) with a level control and a LED meter could be
> added. Of course following the module way of life, making the
> headphone monitor and LED meters as separate modules would be the way
> to go. Another module in this "family" of output modules could be a
> line level to balanced output (switchable to mic level) module. This
> could be done via transformer or active electronics. Mini jacks in and
> XLR outs with a switch for mic/line level out. Great for connecting to
> the mixing desk or recorder.
>
> Im sure some of this has been suggested before but I think if some of
> the proposed modules are going to be made the internal normalization
> is such a important addition (with minimal cost) that planing ahead
> for this kind of pre-patch ability is a great selling point. In fact I
> would consider the addition of a blank pad (even can be un-drilled) to
> all future normalized inputs on all future modules to make this pre-
> patching easier for the DIY type of user.
>
> -James

Thank you for your detailed suggestions. Some of the suggestions have been
already implemented:

- pin headers for default inputs connected to the switching contacts of the
sockets (for default connections)
- pin headers for expansion of the rows
- pin headers for expansion of the columns

But I don't think that we will offer head phone amplifiers or meters. We
already had similar modules available (A-139, A-197) but discontinued them
because of the poor sales.

Best wishes
Dieter Doepfer