||Midi dac voltage too high
Just bought a s/h Oakley Modular from Australia, and the mididac, CV output is sending too much voltage, about 2 octaves higher than my dotcom Midi/CV,
downloaded the manual, tried to calibrate the unit, but the problem is that with a C8 note from the sequencer voltage on pin 1 of IC 1, can't be adjusted to the 9 volts mentioned in the calibration procedure, the lowest it will go is 9.37 volts,
Any help/pointers/ideas will be appreciated
Cheers From Chile
Francisco Straub br> br>
|punchi wrote: |
|Just bought a s/h Oakley Modular from Australia, and the mididac, CV output is sending too much voltage, about 2 octaves higher than my dotcom Midi/CV. |
Which issue board do you have? It should be written on the circuit board as issue 1, 2, 3 or 4. The User Manual on the website is valid only for issue 4 only.
Earlier issues of the midiDAC probably may not go up as high as the dotcom system desires as they use a different variation of 1V/octave to Oakley systems. My MOTM/Oakley format VCOs are typically set two octaves higher than Dotcom. Newer VCOs can be trimmed or built to behave like a Dotcom VCO but older ones may not have the range on their tune trimmer.
For the issue 4 midiDAC to get the correct note interval then you should adjust V/oct to get -10V from note C9. Be aware though that the midi note number is not always the same on different systems - some sequencers use a different midi numbering system. I use the standard definition which means that C9 should be midi note 120.
Once this is set then you can adjust INIT to work with your Dotcom VCOs.
Tony br> br>
Powered by phpBB © phpBB Group