DIY Electronics Question

[Paul Maddox]

okdoky, final question, what happens to the internal LPF1 and LPF2 CVs
when you plug the external inputs in?
do they cease to function or does adjusting them "add" to the external CVs ?

Paul

On 5 March 2013 21:15, punkdISCO <forums at punkdisco.co.uk> wrote:
> Hi PaulM
>
>
>> does this "thing" already have internal CVs for the two LPFs?
>> and if so, are they the same CV internally or two different ones?
>>
>> let me know and I'll draw you a schematic tonight and email it you.
>
> The 800dv has two completely separate LFP (and HPF but lets ignore them for
> now).  So, I have modified the synth with two CV inputs:
>
> CV1 -> LPF1
> CV2 -> LPF2
>
> The above works, but, what I have done is wire the first socket to the
> second so that if only CV1 is plugged in, it controls both filters:
>
> CV1 -> LPF1
>         + -> LPF2
>
> This also work.  BUT(!) because of this connection, if I now control LPF2
> from the synth, this feeds back into LFP1 cutoff.
>
> Everything would be fine IF the above + symbol only worked in 1 direction
> which is why I suggested a diode.
>
> Thanks dude..
>
> London
> www.punkdisco.co.uk
>
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