Doepfer

Hello,

I' ve got a question about transposing sequences with my Doepfer Mini
Basis system. The sequencer A-155 with one multiple A-180 is also in
the system.

I'd like to add the pitch CV from the sequencer A-155 to the pitch CV
from the keyboard (via MIDI-to-CV-module A-190), so I could transpose
the sequence melodie with my MIDI keyboard.

First I used the A-180 multiple to add CV from A-155 to that from
A-190 and connect the summ of both to the CV-in of the oscillator. The
result was a not understandable sequence of similiar tones - no
sequence with the pitch I wanted. The CVs were not added in that way
I'd like to.

Then I add the both pitch CVs (A-155, A-190) with the A-138 mixer, the
mixer's out connected to the CV-in of the oscillator - now it worked!
The pitch of the sequence line could be transposed using the keyboard.
So I decided that the A-180 must do something that cannot work
especially with this both CVs (A-155, A-190).

Question: what is the reason of the behaviour of the A-180 multiple
module? Is it possible to do some DIY-modification on the A-180 to use
the multiple especially with A-155 and A-190?

Kindly regards

Robert!