[sdiy] Multiplier vs VCA?

[jays at aracnet.com]

I think there are 2 main reasons.
1) Availablity and cost. Having to order a tube of something at $4-$5 a pop from the manufacture.
2) If I remember right these have a log response to control voltages.
a) Most of our VCAs have linear responses because our envelope generators have a log curve.
b) Have to get really creative to use these in VCOs with a exponental freq response.
c) Only place I can think of a log device being useful is for a pan/morph circuit.

Jay S.

Steve Ridley <spr at spridley.freeserve.co.uk> wrote :

> >> You can get a THAT 2080 VCA for about that, and that's a
> >> serious VCA worth considering.
> 
> > THAT products look like they are very good, but then you get
> conversations
> > like this:
> >
> > Consequently, I'm boycotting all THAT products purely for grammatical
> > reasons.
> 
> You Sir are a silly sausage (c:
> 
> Actually, the THAT 2080 suffered from severe
> typographical distortion - the correct number is
> 2180.
> 
> I'm surprised how few of these devices are used in
> DIY synths - they're the VCA of choice in most of the
> pro and semi-pro audio industry and have been for
> years.  Of all the VCAs listed, I'd expect this one to
>  be the last one standing when all the others have
> been discontinued.
> 
> 
> Steve