From Brian Willoughby Sent Thu, Mar 14th 2019, 07:24
From Brian Willoughby Sent Thu, Mar 14th 2019, 07:24
Thanks for the response, Marcus, and thanks for making the connection by = passing things along, Bob. I couldn=92t have hoped for a better result. I enjoyed digging through = the schematics and firmware to figure out much of what went into these = products, and it=92s especially nice to hear from someone involved and = aware of the original intent. The Xpander/Matrix are classics of MIDI = analog/digital hybrid synthesis, and it would be great to document as = much as possible for posterity. Brian On Mar 12, 2019, at 9:43 AM, M V <xx_xxxxxx@xxxxxxx.xxx> wrote: Thanks for passing along Bob. Sounds like a great next project for = you!:) From: Bob Grieb via analogue <xxxxxxxx@xxxxxxxxx.xxx> Sent: Tuesday, March 12, 2019 12:33 PM To: xxxxxxxx@xxxxxxxxx.xxx Subject: [AH] Marcus Ryle's answer to the Matrix 24 question (I sent it = to him) =20 Hi Bob, =20 Yes, my original dream was to someday make a Matrix-24. When designing = the Xpander we put a jumper on the voice board to allow up to four voice = boards to be addressed independently, in anticipation of future models = with more voices. In the Matrix-12 we used the first two addresses to = create a 12 voice. The Matrix-12 main board was set up to address four = voice boards, so that no hardware changes would have been required to = make this work (other than the power supply would have needed to be = beefed up). The intended UI was to have the voice select button (the one = that has two LEDs labeled VOICE 1-6 and VOICE 7-12) toggle through four = states to select between the four boards if we were going to make one = without any changes to the front panel either (though other UI = approaches would have been better). =20 Although the hardware was ready to go, a lot of work would have been = needed on the main processor firmware, since that=92s where all the = editing, patch memory, and voice assignment work lives. Never did get = started on any of that, and never had the chance to even make a = prototype. I left Oberheim in April of 1985, and no one else pursued it = as far as I know. =20 Thanks, Marcus =20 Sent: Tuesday, March 12, 2019 5:23 AM =20 Hello Marcus,=20 Probably you would be the person most able to answer this Analog = Heaven forum post. If you care to, I will relay your answer to the forum. =20= Best wishes, Bob Grieb (tauntek.com)