Thanks again, Dave. You are a fountain of knowledge.
>
> For anyone who doesn't know, SEM is the Oberheim Synthesizer Expander
> Module, the earliest Oberheim product. You remember - those little
> white boxes that were designed to hook up to a MiniMoog to expand its
> sounds, and later were mounted 4 to a box with a keyboard to become
> the Oberheim 4 Voice.
Ok, yes. The first time I recall this unit was on Larry Fast's "Electronic
Realizations..." (just in awe when I first heard this album - still am).
>
> The filter in the SEM is exactly what you are asking for - a LP/BP/HP
> + Notch filter, with a 2 pole (12db/oct slope) response. You can
> smoothly change from one mode to another by turning a single knob.
> For a MOTM version, it sure would be cool to have voltage control of
> that knob ;>)
>
I would think that smooth vc change of mode would be a good "motm
exclusive" and make this already useful module much more interesting.
Well, another 2U sucked up in my dwindling vacant motm spaces.
Thanks again for the clarification, Jeff