Doepfer

> Hi all
>
> Dieter Doepfer schrieb:
> > The A-143-4 was planned as a VCLFO but not as VCO.
> I think we should take in account, that there is an essential aspect
> missing which is necessary for a real VCO:
> There is no fine tune. I assume the Frequ.-knob would cover a range of
> around 5 octaves or more. I doubt that the four oscillators could ever
> be tuned to a real common pitch as it would be required for unisono or
> polyphonic use.
>
> Florian

Right, there is a discrepancy for the traditional frequency control
behaviour for LFOs and VCOs (provided that only one frequency control is
available, but not a set of e.g. fine tune, coarse tune, octave switches).
Usually the controls of a LFO cover a range of several octaves whereas the
frequency control of a VCO should cover a smaller range as the pitch of a
VCO is mainly controlled by a CV coming from the sequencer, keyboard,  Midi
interface or whatever. We added a jumper for the control range of each knob
to pcb. As already said the A-143-4 is planned in the first place as a VCLFO
that can be "abused" as a VCO too. The planned A-110-4 will be more VCOish
(with octave switches, smaller control range of the manual frequency knob,
sawtooth core, PWM).

Best wishes
Dieter Doepfer