[sdiy] A few Oberheim questions

[harrybissell]

inline...

David Cornutt wrote:

> Please humor me for a moment, for I have sought the answers
> to these questions via Google but haven't really come up with
> any definitive answers.  I'm trying to write a patch editor and
> librarian for the Matrix-1000 and I've run into some questions:
>
> 1.  I have a request to make the editor also support the
> Matrix 6/6R synths.  Can anyone summarize what the differences
> are between these and the 1000?  I know that the 6/6R support a
> keyboard split/layer mode that the 1000 doesn't have.  What else?
> I see some references in the Matrix 1000 programming info to,
> for example, an "external" trigger mode for the LFOs.  Is this
> perhaps a leftover from an external input on the 6/6R that
> the 1000 doesn't have?

The 6/6R has two high frequency oscillators, one for each DCO.  The 1000 has

only one HFO, shared between the two DCOs.

The 6/6R has stereo outputs... there is a set of four voices and a set of
two vioces
which can do splits. The 1000 is strictly mono-timbral  (is that a word ?)

The footswitches etc from the 6/6R do not exist on the 1000

The V/F display is missing from the 1000... it has a very simple three digit
LED display

> 2.  Other than the fact that one is a keyboard and one is a rack,
> are there any differences between the 6 and the 6R?

basically, there are almost no differences. The same PCB sets are used in
either case.
The 1000

> 3.  The Matrix-12 doesn't really fit into this line; it's more closely
> related to the Xpander than it is to the Matrix-6.  Correct?

correct !   :^P

> 4.  While I'm at it, just what are the "15 filter modes" on the Xpander?

Mark has your answer on that...

H^) harry