Doepfer A-100(~ 40 MB) - Manual (Page 602)

A-176 Control Voltage Source System A - 100 doepfer
4
5. User examples
Expanding other modules’ facilities
Module A-176 is always going to be useful when you
need a manually controlled voltage which is not avai-
lable on a particular module itself.
For instance, you can give the A-132 low cost VCA
manual control of its gain voltage, by patching in an
A-176, and using the coarse and fine controls of one of
its CV sources to set the gain (see Fig. 1).
Fig. 1: Providing gain control for an A-132 VCA.
Improving tuning on the A-110 VCO
In contrast with the A-111 High End VCO, the A-110
standard VCO only has one control (Tune) for tuning.
The range of this control has to be a compromise - it
has a maximum range of only about an octave, but its
fine tuning ability still isn’t very precise.
With the A-176, it’s possible to overcome these limitati-
ons, by patching the output from either the first or
second voltage source into the CV2 input on the A-110
(see Fig. 2).
The VCO's frequency is then determined by a combi-
nation of the Range and Tune settings on the A-110,
and the sum of the voltages going into the pitch CV
input CV 1 and the external control voltage input CV 2.
Using the voltage source’s coarse controller 1 or 3
you then have far wider manual control of the range of
the A-110 at the selected footage; and with the voltage
source’s fine controller 2 or 4 you can fine tune the
A-110 with great precision.
A-132
A-176
Contr. Volt. Source
CV 1
Fine
CV 1
In Out
CV
CV 1
CV 2
}
Gain