Doepfer

hello dieter,


--- In Doepfer_a100@yahoogroups.com, "Dieter Doepfer" <hardware@d...> 
wrote:
> Right. But we still have some CEM3381 in stock so the next 
production series
> of A-134 and A-135 is "safe". After this even these modules will 
have to be
> redesigned (may be with THAT VCAs or the Analog Devices SSM2164 
Quad VCA).


yes, this would be cool. afaik these vca's can also process
dc voltages, so such a redesign would be a real improvement.


> Even for the A-126 we still have some CEM3382 in stock but we also 
plan a
> separate voltage controlled quadrature oscillator module that will 
allow
> lower frequencies down to a few Hz. Fortunately there are jumpers 
on the
> A-126 module (required for adjustment) where the external QVCO can 
be
> connected without soldering by replacing the jumpers with 2 pin 
female
> headers. Unfortunately we used the CA3080 for the prototype of the 
QVCO
> which is obsolete now and so we have to start again. May be with 
LM13700
> hoping that this circuit will be continued in the near future. 
Really a hard
> job at the moment ...


so the new quadrature vco will not be a thru-zero design?

best wishes

ingo