MAT04 for ASM-1's

[patchell]

Mantid wrote:

> Hello fellow synth nuts,
> I am building some ASM-1's and am thinking of using MAT04's for the matched
> tranny pairs. I just happen to have a few of these in my possesion. If I
> was to use one MAT04 for two VCO's would I have to worry about the VCO's
> interacting with one another?

    This is a question I am trying to answer myself.  However, there are other
ways of looking at this problem.  The MAT02 costs about twice as much as the
MAT04.  So, even if you toss the extra transistors in a MAT04, you are still
ahead.  Another posibility that I have been thinking of trying, is connect the
extra transistors in parrallel with the other two.  This should cut the bulk
resistance in half, but don't really know if this is worth the trouble.

>
> Also, is the Moog ladder filter tranny matching method appropriate for
> ASM-1 VCO tranny matching.
> It seems that the Moog method is for trannys as diodes and the ASM -1 needs
> trannys matched for beta.
> thanks- BIll

--
 -Jim
------------------------------------------------
* Visit:http://www.silcom.com/~patchell/
*-----------------------------------------------
*If you didn't buy a home in Santa Barbara,
* You didn't pay enough!
------------------------------------------------