Doepfer A-111-1 High End VCO - Manual (Page 11)

doepfer System A - 100 VCO 2 A-111
11
4. Controls
1 Range
Footage (the octave of the fundamental) is controlled
with this knob. Seven settings are available, covering
a very wide frequency range.
2 Tune • 3 Fine
Use these two controls to tune the VCO. The Tune
control 2 is for coarse tuning, and can alter the
VCO’s frequency roughly
± ½ octave. The Fine control
3 is for fine tuning.
For total accuracy, an electronic tuner is
recommended.
P If two or more oscillators are controlled by
the same control voltages, and set to the
same footage, you can use the Fine knob to
de-tune one or more of the oscillators
relative to each other. This can produce
vibrato and chorus-like effects, perfect for
soundscapes and generally rich timbres.
4 CV 2
The pitch of the VCO is controlled by the voltages
present at inputs ! and ". The level of CV input " can
be controlled with the Attenuator 4 .
5 PW
Use control 5 to adjust the pulse width of the
rectangle wave which is output at socket = (see fig. 2
in chapter 3.1).
6 PCV
The pulse width of the rectangle wave can also be
altered or modulated by voltage control (see chapter 6,
User examples). Patch a CV in at input & and adjust
its level with the attenuator 6.
7 Lin. FM
Use attenuator 7 to adjust the amplitude of the
linear FM signal patched into socket §.