[sdiy] Re: OTA comparisons, VCA shootout

[Metrophage]

I have been much enjoying the discussions of OTAs as of late. The
percieved virtues of the 3280, limitations of the 13600. Especially the
detailed discussion of how the OTAs work, which I certainly do not yet
understand so well myself.

Since I have been wondering about what kinds of VCAs to make to finish
my two first panels (mostly EFM, some CV processors). I think I will
need quite a few VCAs, and because I like to sometimes make fast
rhythms, they will need to be very quick. Of course, I have checked out
Jorgen's VCA shootout with much interest.

What I am wondering about in all of this OTA discussion, is about how
transistor OTAs fare. I have seen schematics and heard critiques of
some using hand-matched transistors, and the RCA/Harris arrays. Hardly
any though of some of the transistor packages which sound like they
were made for this purpose, like the THAT and MAT0X arrays. Seems to me
like an MAT04 would make for a decent and inexpensive VCA. Anybody have
any opinions of these to relate? 

CJ

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