hello david,

i have an a178 theremin, but i don't use it often.
it looks like my a178 needs some time to warm up or something
like that. i'm not able to adjust the cv offset to zero voltage
until i wait for about 15 minutes, after the the antenna was
plugged in.

best wishes

ingo



--- In Doepfer_a100@yahoogroups.com , David Salter <david.salter@r...>
wrote:

> At long last I have finally received my A107, A149-1 and A196.
>
> Early impressions are good on all three. Much more experimentation

is

> needed though.
>
> At the same time I purchased a pair of A178 Theremin modules.
>
> These are very twitchy. I put a basic set-up together to test, A178

a >

> VCO>VCA and A178 b > VCA.
>
> Apart from the fact that I will probably have to invert the VCA
> controller so that it is quieter as you move nearer the aerial

instead

> of the other way round as it is by default.
>
> I have found that the offset control on both only has a practical

range

> between 4.5 and 5.5. Anything else and either I get a voltage that
> pushes the VCO outside the audio range or in the case of the VCA
> controller the audio is always on or off regardless of hand

positioning.

>
> Any thoughts from the Theremin users out there
>
> BTW my aerials also do not stay in a horizontal position (as in a
> previous thread) I'll see if I can tighten the socket terminals a

bit.

>
> Regards
>
> David
>
>
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