[sdiy] Analog additive synthesizer?

[JH.]

> Organs -- especially Hammonds with drawbars -- are often cited as examples
of additive synthesis. Definitely additive and analog though not exactly
synthesis, per se.

I once had a table with Hammond drawbar settings to emulate classic pipe
organ registers.
Quite impressive - a lot more on the "synthesis" side than the usual rock
and jazz organ settings.

JH.