Merci BigPanik!
I found the audio mix board you mentioned in the manual, then looking at the schematics i found it in there; i colored a bit the schematics to make more sense to me.
Green is the Midi connector on the filterboard,
Yellow the DSB1
Red the Mix Board
and Brown the audio out on the filterboard.
So from what i see:
Midi goes to DSB1 directly,
Audio to the Mix BD directly,
5 pin on DSB1 to Mix BD and
The 4 pin output of the Mix BD goes to amp bd.;
So practically, the DSB1 "converts" the MIDI signals to pure audio then mixes them on the mix bd with the SFX from the filterboard.
That means that for my 2 pictures, with connectors on the DSB1 side and PCB side, first:
On DSB side:
The black connector is for power,
7 pin for midi
5 pin for 5 pin socket on dsb
On the "PCB" side
The red-yellow-white wires go to 12v,5v,GND
The 5 pin connector goes into the mix BD
and the 7 pin connector in the MIDI socket on the filterboard.
It makes a ton of sense now!
Thanks again!
![](http://gamoovernet.pixhotel.fr/pics_gamoovernet690px/20120904112627-Radin-mix.png)
![](http://gamoovernet.pixhotel.fr/pics_gamoovernet690px/20120904112654-Radin-mix2.png)
![](http://gamoovernet.pixhotel.fr/pics_gamoovernet690px/20120904112724-Radin-dsb-side.png)
![](http://gamoovernet.pixhotel.fr/pics_gamoovernet690px/20120904112742-Radin-psu-pcb-side.png)