From Brian Willoughby Sent Fri, Nov 30th 2018, 19:43
I haven=E2=80=99t opened a Matrix-12 in a while, and I can=E2=80=99t = remember whether the CPU is in a socket or soldered to the board. Of = course, the EPROM chips are in sockets, but they may be the only ones. My point is this: If the CPU isn=E2=80=99t in a socket, then I=E2=80=99m = not =E2=80=9Cupgrading=E2=80=9D my Matrix-12. I certainly would not = recommend de-soldering the 6809 on a Voice Board just in an attempt to = make a few shortcomings slightly less so. Brian Willoughby p.s. Does anyone have a full copy of the Matrix-12 Service Manual as a = PDF? What I have is missing a lot of pages. It=E2=80=99s possible to = glean some information from the Xpander Service Manual PDF, which is = more complete, but there are a lot of differences between the two. Last = time I asked, lots of folks sent what they had, but it seems that nobody = has the missing pages. p.p.s. Looking at the Xpander Service Manual, there are 147 sockets on = the Voice Board. I think that must mean everything is in a socket! On Nov 30, 2018, at 11:05 AM, Andrew Scheidler <xxxxxxxx@xxxxx.xxx> = wrote: > While it wasn't really "aggressive" or "phat", I really miss my = Xpander. With all the LFOs, Envelopes, Ramps, etc at your disposal it = was more like a modular than any other synth I can think of. And to = make all that potential useable, it had a wonderful GUI (with multiple = displays, "soft" knobs and excellent graphics on the panel) that was = well worth the space it occupied. It is a marvelous synth to get "lost" = in. >=20 > If an upgraded brain could be transplanted into these synths, they = would probably triple in price overnight... they were way ahead of = their time in the mid 80s :-) >=20 > Drew