Re: [AH] Anyone have Oberheim Matrix-12 ROM files?

From Brian Willoughby
Sent Thu, Nov 8th 2018, 07:25

Multi-patches are quick to program.

The second public demonstration of the Soundplane used a Matrix-12. I =
dialed in the Soundplane to detect 10 touches, and assigned those to 10 =
MIDI channels on the Matrix-12 so that each finger had its own pitch =
bend, channel pressure, and modulation lever control. Unfortunately, =
people kept walking up to the table and trying to play the Matrix-12 =
from its keyboard instead of from the multi-touch pressure sensitive =
controller in front of it. So, I quickly assigned the remaining two =
voices to the keyboard in a duophonic voice allocation. It was super =
easy to set up. You couldn=E2=80=99t play chords from the keyboard that =
way, but the point was to play chords on the Soundplane and have =
three-dimensional control of every note.

The hard part was finding appropriate sounds and then modifying the =
voice settings to track pressure continuously, rather than just run =
through an envelope at a fixed rate. The voice architecture has a =
dual-VCA signal path at the output of each voice, so it was fairly easy =
to connect pressure to one of those. What was more difficult was taming =
the existing VCA envelope so that it didn=E2=80=99t totally shut down =
the voice while you were still touching the controller. The voice =
editing appears direct, but the complexity is deep enough that it=E2=80=99=
s not necessarily quick. The Matrix-12 does have a Modulation page =
that=E2=80=99s missing from the Xpander, and I find this helps browse =
through the settings in a voice patch. A graphical editor would help if =
you don=E2=80=99t mind a computer attached via MIDI.

Brian Willoughby


On Nov 7, 2018, at 3:48 PM, Tristan <xx@xxxxxxxxx.xxx.xx> wrote:
> Unfortunately that is one of those "How long is a piece of string?" =
questions. You could spend days crafting=20
> 12 individual component patches to fit together as a complex jigsaw or =
you could build a layered multi in=20
> minutes by flipping through the single patches and then tweaking a few =
to fit together. Conceptually it is=20
> the same as working on any synth which allows you to build multi or =
performance patches from a number=20
> of single patches. I have found the Xpander great for building sounds =
on the go in a production=20
> environment.=20
>=20
> /Tristan
>=20
> On Thu, Nov 8th, 2018 at 9:39 AM, Alex Timchak <xxxxxxxx@xxxxx.xxx> =
wrote:
>> Not that I=C3=A2=C2=80=C2=99ll be able to afford a matrix 12 anytime =
soon - but how time
>> consuming is it to make one of those complex patches?  I=C3=A2=C2=80=C2=
=99ve read the
>> learning curve is steep...
>>=20
>> On Wed, Nov 7, 2018 at 4:18 PM Tristan <xx@xxxxxxxxx.xxx.xx> wrote:
>>> What really sets the Xpander/Matrix-12 apart is that you are =
effectively
>>> getting 6/12 mono synths which
>>> you can combine together in all sorts of different polyphonic =
grouping and
>>> layers to build complex sounds.
>>> It is so much more than what can be be done in a single patch.
>>>=20
>>> /Tristan
>>>=20
>>> On Thu, Nov 8th, 2018 at 5:16 AM, M V <xx_xxxxxx@xxxxxxx.xxx> wrote:
>>>> Thanks for posting the Xpansions link. I have seen a few of those =
tips posted
>>>> elsewhere--is there somewhere where one could find all the issues?
>>>>=20
>>>> Reading through the programming section, it confirms what I have =
long
>>>> suspected, which is that a lot of the draw of the excessive =
modulation is for
>>>> player/performer tricks. And I see a lot of parallels with how the =
Moog One
>>>> is being presented. That's not to say that the One isn't vastly =
superior in
>>>> terms of modulation speed and routing abilities, but the general =
=E2=80=9Clook at
>>>> this cool way to fade between two stereo clavinet patches" idea =
seems to be
>>>> the same.
>>>>=20
>>>> Reading through the Xpansions patch list reviews sort of follows
>>>> that--there's a lot of emphasis on "real" sounds, and little on =
wild/creative
>>>> synthesis. I guess it was the norm of the time (early '90s), but I =
am always
>>>> perplexed by the draw toward "realistic" sounds on what should be =
synthesis
>>>> monsters. The Xpander/M-12 presets have to be some of the worst =
ever, but I
>>>> can't say I've ever come across any patch sets that are vastly =
superior/more
>>>> interesting.
>>>> ________________________________
>>>> From: codemechanic <xxxxxxxxxxxx@xxxxx.xxx>
>>>> Sent: Tuesday, November 6, 2018 7:35 PM
>>>> To: Brian Willoughby
>>>> Cc: AH send
>>>> Subject: Re: [AH] Anyone have Oberheim Matrix-12 ROM files?
>>>>=20
>>>> Hi Brian,
>>>>=20
>>>> I own an Xpander which I believe has v1.2 Main board ROMs and v1.4
>>>> Voice board ROMs, but unfortunately I can't confirm that as I'm out =
of
>>>> the country at the moment.
>>>>=20
>>>> In searching around it seems like there's more information out =
there
>>>> on the Xpander than there is on the Matrix 12. I couldn't track =
down
>>>> Matrix 12 main board ROMs anywhere. The only way I can come close =
to
>>>> confirming the latest revision numbers for the Matrix 12 ROMs was =
via
>>>> a page on sequencer.de:
>>>> =
https://www.sequencer.de/blog/oberheim-xpander-oberheim-matrix-12/2547
>>>>=20
>>>> "Softwareversionen/most recent software version:
>>>> Processor: 1.2 (Matrix12: 1.1)
>>>> Voice version: 1.4 (Matrix12: 1.6)"
>>>>=20
>>>> =46rom the information found there it sounds like the latest revs =
are
>>>> 1.2/1.4 for the Xpander, and 1.1/1.6 for the Matrix 12. Further
>>>> information on the Xpander revisions comes via the software update
>>>> operational instructions released 4/5/85
>>>> (http://www.synthzone.com/midi/oberheim/obxp/xpandros.zip):
>>>>=20
>>>> "If the main processor version reads 1.2, the Xpander already =
contains
>>>> the most recent main processor version. The voice processor version
>>>> will be displayed as 1.0, 1.1, 1.2, or 1.4. Again, if the version
>>>> displayed is below 1.4, the software should be updated."
>>>>=20
>>>> I was also able to find documentation regarding the Midi
>>>> specification, software updates etc. for the Xpander that I can =
send
>>>> your way if you're interested. There sure is some interesting
>>>> information found in the Xpansions newsletter archives:
>>>> http://www.synthzone.com/midi/oberheim/obxp/xpansion.zip
>>>>=20
>>>> -Ben
>>>> On Wed, Nov 7, 2018 at 4:13 AM Brian Willoughby =
<xxxxxx@xxxxxxxxxxxx.xxx
>>>>=20
>>>> wrote:
>>>>>=20
>>>>> Here are some more details:
>>>>>=20
>>>>> The Matrix-12 Processor Board has five 8KB ROMs
>>>>> The Xpander Processor Board has four 8KB ROMs
>>>>> Voice Boards have two 8KB ROMs, and appear to be universal for =
Xpander & Matrix-12 (not confirmed).
>>>>>=20
>>>>> I have an incomplete set of Matrix-12 Processor Board v1.2 ROMs, =
(0, 1, 4), and I need the two missing ROMs (2, 3).
>>>>> I am still looking for a complete set of M12 PB v1.1 ROMs, but I =
might just buy a ROM reader and pull the chips from my Matrix-12.
>>>>>=20
>>>>> My Matrix-12 has v1.6 on the Voice Boards.
>>>>>=20
>>>>>=20
>>>>> Meanwhile, I recall a resource that listed the latest ROM versions =
for both Xpander and Matrix-12, for both Main and Voice firmware. Can =
anyone point me to that? I have a friend who is interested in upgrading =
his Xpander to the latest, if we can find out what the latest is. =
I=C3=A2=C2=80=C2=99ll probably update my Matrix-12, too, since Main PB =
v1.1 seems to be old.
>>>>>=20
>>>>> I have a complete set of Xpander Processor Board v1.2 ROMs
>>>>> I have a complete set of Voice Board v1.4 ROMs
>>>>> I have a complete set of Voice Board v1.6 ROMs
>>>>>=20
>>>>> Brian Willoughby
>>>>>=20
>>>>>=20
>>>>> On Nov 4, 2018, at 5:56 PM, Brian Willoughby wrote:
>>>>>> I have several copies of the Xpander ROM files, and at least one =
of them is valid.
>>>>>>=20
>>>>>> I=C3=A2=C2=80=C2=99m looking for Matrix-12 ROM files. At the very =
least, I would like the Processor Board ROM data. It would be nice to =
have the Voice Board ROM data as well.
>>>>>>=20
>>>>>> I'=C2=99m working on a patch librarian for macOS, and need the =
ROM data to scan for undocumented MIDI System Exclusive details.
>>>>>=20
>>>>> Brian Willoughby
>>>>> Sound Consulting
>>>> --
>>>> benjamin allen
>>>> xxxxxxxxxxxx@xxxxx.xxx
>>>> 415.624.9111
>>>> http://www.codemechanic.com