A-138, System a - 100, User examples – Doepfer A-100(~ 40 MB) User Manual
Page 384: Doepfer, Mixer, Mixing audio signals, Mixing control voltages

A-138
MIXER
System A - 100
doepfer
4
5. User examples
Mixing audio signals
D
Use A-138 b, and patch the audio signals to be
mixed into sockets ! to $.
D
Adjust the relative amount of each signal with con-
trols 1 to 4, and the volume of the whole mix with
control 5.
D
The whole mix is output at socket %.
Fig. 1: Mixing audio signals with an A-138 b
Mixing control voltages
You may sometimes need more CV inputs than a parti-
cular module has - for instance if you want to control
VCF 1 with an ADSR, LFO, aftertouch, and keyboard
tracking.
In that case, you’ll need to use an A-138a VCA to mix at
least two of the CVs, and send the output to one of the
VCF’s free inputs (see Fig. 2).
Fig. 2: Mixing control voltages with an A-138 a
LFO
ADSR
Input 1
Output
A-138
MIXER
Input 2
Input 4
Input 3
In 1
In 2
In 3
In 4
Out
CV
After Touch
VCO
VCO
Input 1
Output
A-138
MIXER
Input 4
In 1
In 4
Out