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Matrix-12 ROM version changes

Keith Sterling All Messages By This Member #1419 Does anyone know what was updated in the current Matrix-12 ROMs? ? My Matrix-12 has:? Voice ROM version 1.4 Main Board ROM version 1.1 I know that there is a Voice ROM version 1.6, and I am wondering if it's worth it to buy an image from Music Technologies Group and burn EPROMs for my old Matrix-12? Keith ?
John Leimseider All Messages By This Member #1420 开云体育 You only want 1.6 if you have rev D voice boards! If you do, it will fix the intermittent Voice Processor Malfunction message. It won't work on earlier revs of the voice board. When they designed the layout of the rev D boards, they made a mistake on the S/H layout. Oops... Version 1.6 was to fix that mistake in software. On Jan 8, 2016, at 2:34 PM, sterling.keith@... [xpantastic] <xpantastic@...> wrote: toggle quoted message Show quoted text ? Does anyone know what was updated in the current Matrix-12 ROMs? ? My Matrix-12 has:? Voice ROM version 1.4 Main Board ROM version 1.1 I know that there is a Voice ROM version 1.6, and I am wondering if it's worth it to buy an image from Music Technologies Group and burn EPROMs for my old Matrix-12? Keith ?
Keith Sterling All Messages By This Member #1421 Thanks for the info John. Where is the board revision located on the PCB? ?My voice boards have "OBERHEIM 1810D" etched on them. ?I couldn't find any other useful marks. From what you are saying can I glean that I have the latest firmware for my voice boards, because the synthesizer would not work properly with Revision 1.6? I only see the?Voice Processor Malfunction message when I disconnect the clock signal from the main board to one of the voice boards. ?
John Leimseider All Messages By This Member #1422 开云体育 That is the version D board. The 1.6 doesn't add anything. I wouldn't change it unless you are having problems. I could send the files to the group if anyone wants it. There was also a later main board software that I have files for, at work, but I don't know what the changes are specifically. I know if was supposed to fix some MIdI stuff, but I have never seen any documentation. The place I used to work at in LA bought all of the remaining stock from Oberheim when they closed the N Hollywood location. The place where I work now, National Music Centre in Calgary bought all the OB stuff from MusicTek in LA. I keep finding docs I never saw before...? On Jan 8, 2016, at 8:19 PM, sterling.keith@... [xpantastic] <xpantastic@...> wrote: toggle quoted message Show quoted text ? Thanks for the info John. Where is the board revision located on the PCB? ?My voice boards have "OBERHEIM 1810D" etched on them. ?I couldn't find any other useful marks. From what you are saying can I glean that I have the latest firmware for my voice boards, because the synthesizer would not work properly with Revision 1.6? I only see the?Voice Processor Malfunction message when I disconnect the clock signal from the main board to one of the voice boards. ?
Keith Sterling All Messages By This Member #1423 Interesting. ?My Matrix-12 has worked great for 30 years so I reckon there's no reason to change it. Oberheim had one location after North Hollywood... ? they were in an industrial park in Commerce just south of downtown LA for a few months before going out of business. ?I wonder where all that equipment went, there were a few Z80 in-circuit emulators, audio spectrum analyzers, etc. ?Many engineering stations.? I remember seeing stacks of boxes of stuffed Oberheim boards at APEX Surplus in Sun Valley in the early 90's.

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