The MMT-8 was a hefty little machine for its day, and although its memory is limited by today's standards, it offers a lot of creative features with an intuitive interface and a friendly price tag.
However, my unit had a few flaws when I got it
- The machine dropped dead at a certain point while recording. Suspecting a firmware bug, I had it serviced under guarantee, and the whole main PCB had to be changed due to a fault in the design. Then it worked.
- A month or so later, the LCD display went out - two lines in the display went dead, and I ordered a replacement part and changed it myself. Then it worked again.
- The buttons got worse with age and use, and at the end I had to apply about 10 kg. force with a pencil to get the unit to react. (Bad thing when you consider that many functions require that you hold down one button while pressing another.) This was too much a strain for the upper casing part, and I had to get a replacement for that, too. Then I thought out an improvement for the contacts in the buttons: I cut out small pieces of aluminum foil using an ordinary paper punching machine (the kind that makes little holes in sheets of paper for fixation in binders) and glued them to the conducting rubber thingies under the keys. Then it worked again.
- I got annoyed by the functionality of the metronome - When you turn off the metronome speaker in software, the metronome output from the plug on the back of the MMT-8 was turned off, too. I wanted to use the metronome for acoustic recordings, and didn't want the clicks to appear on the take. I put a switch in the back of the unit in such a way that when the switch was in one position the unit functioned normally, and when the switch was in the other position the click signal to the internal speaker was put through an 8 ohm power resistor. This didn't affect the output from the plug on the back.
The unit has collected some dust now, but occasionally I get it out and transfer some of my old tape dumps to PC as midi files for further processing. I have a lot of stuff...
regards, Nils