The first Multi-Timbral synth. six track sequencer and arpeggiator. Digital control of Curtis CEM3394 'synth on a chip' with nothing particularly surprising I suppose. Single knob data entry and numpad parameter and patch entry.
These machines auto-tune every 30 minutes. Or you can init the process with hidden function Patch Rec+6 as I recall. Look at the hidden functions before you start work on this machine. There is also a reset proceedure in the manual someone said. I've not had to use this. Recent repair had a defective DAC which is also a little hard to find. Here are those functions not shown on panel:
Below is a list of Midi commands: CONTROL RECORD + 0- dump current sequences and stacks CONTROL RECORD + 1- enable/disable program change CONTROL RECORD + 2- dump current program (sysex) CONTROL RECORD + 3- center pitch wheel (for service use only) CONTROL RECORD + 4- enable/disable wheels and parameters CONTROL RECORD + 5- unknown CONTROL RECORD + 6- manual tune CONTROL RECORD + 7- zero DAC (for service use only) CONTROL RECORD + 8- basic/raw patch CONTROL RECORD + 9- tune test toggle (for service use only) TRACK RECORD + 0- unknown TRACK RECORD + 1- Mode 1, Omni on/mono off TRACK RECORD + 2- Mode 2, "Double Mode" TRACK RECORD + 3- Mode 3, Omni off/mono off TRACK RECORD + 4- Mode 4, Omni off/mono on TRACK RECORD + 5- Shows software version TRACK RECORD + 6- save the base channel TRACK RECORD + 7- local on (enable keyboard, etc.,..) TRACK RECORD + 8- local off (disable keyboard, etc.,..) TRACK RECORD + 9- dump 100 programs
**OK, here's what I've found with my unit:
**Using version 11, the MIDI mode will be memorized -- if you set it to Omni **off, it will be that way on power up. Works for modes 1, 3 and 4.
**The version 9 you sent is the same one I have. It powers up in mode 1 (omni **on, mono off) -- changes are NOT saved in memory.
**What I find interesting is that NONE of the versions will save the basic **channel -- it always powers up on 3.
--------------Thanks for checking that Greg. I'm totally baffled now by how the one I had booted refusing to acknowledge messages on anything but channel 3. When I get my new burner I'm going to try both versions in my old machine sn.799 and see what it does.
Many have wanted the mod now gone from NoteIt to give individual outputs. SInce the outputs can all be merged (to a current summer) on the 3394's, one would have to install individual buffers (A quad op amp and a dual to accomplish having six would seem most efficient. TL084 and TL072 would work fine) and then run the outputs direct to the jacks for lowest noise or include a protect resistor in series if you're afraid of having something get damaged ..1K typically. Remember for quieter results you can always just rig a cord if you have a 1K resistor in line...so that the unbalanced output end on a 1/4" jack for instance has a two wire coax coming into it; the other other end tied into an xlr and into a mixer that subtracts pin 2 and 3 to get the signal. Anyway tied shield to ground from pin 1 of the xlr. Pin 2 direct to top of the 1/4". But pin 3 of xlr should tied to a 1K resistor inside of the jack housing of the 1/4" jack. THen tied the other end of the resistor to shield and voila you have a simulation of a balanced output where all the common noise in the two lines gets subtracted away!
I have lots of parts for these. Let me know if you need anything and I have a scrap case at the moment even but no knobs. I did come up with a near fit solution for the rubber buttons and have some pares of those. I think most have arrows on them as I recall.
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