via this auction
"This is a USA-built Matrix-12. This is mainly of interest because if the display ever fails, there is a replacement kit for the USA-built version. Some Matrix-12's or Xpanders (the non-keyboard 6-voice version) were built in Japan, with a different board design, for which there is no display replacement that I know of.
The Matrix-12 was available with a optional pressure-sensing keyboard, but this one doesn't have it.
The power section works on all voltages worldwide (90-130VAC, switchable to 190-260, 50-60Hz).
The unit had one fault I was aware of: one voice's filter did not pass the self-tune. I had this repaired by Hayashi-san at Symplex in March 2023. As outlined on the receipt shown, he diagnosed the replacement of the voice 10 filter chip (3372, shown; I will include the original bad chip in the purchase). Finally, he did a complete test, and found some more work to do: he cleaned the bend and mod wheels, volume pot, six encoders, eight switches, and upgraded to the latest v1.6 ROMs. The unit now always passes all five self-tune tests as shown on the display quickly, even immediately after turning on."
No comments:
Post a Comment
To reduce spam, comments for posts older than one week are not displayed until approved, usually same day. Do not insult people. For items for sale, do not ask if it is still available. Check the auction link and search for the item. Auctions are from various sellers and expire over time. Posts remain for the pics and historical purposes. This site is meant to be a daily snapshot of some of what was out there in the world of synths.