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Posted

I would like to build a midibox CV in order to control my MS-10 with MIDI sequencer (1st step -> CV / Trig / Cutoff Freq.)  ;D. I meet some difficulties to understand MS-10 specifications from http://www.korganalogue.net/korgms/manuals/ms10/m1001.html#specs which drive AOUT module design :

*  VCO control voltage input (linear response) / 0V ~ +8V   ??? 

*  External cut-off frequency control input (2OCT / V) / -5V ~ +5V   ???

*  External trigger input /  gnd.bmp  ???  What does it mean?

What is the max output voltage, 8 V? R_x, R_y and R_sigma should be respectivly 10kohm, 2,2kohm and 800 ohm?

Does it work as follow?

table.gif

Posted

Hi.

Which is more important - that You understand this jargon or that controlling MS-10 works?

*  VCO control voltage input (linear response) / 0V ~ +8V   ??? 

= Midibox CV Hz/V option. TK has used Korg MS-50 to realize this.

*  External cut-off frequency control input (2OCT / V) / -5V ~ +5V   ???

= This is funny one ;)  V/oct. scaled down (to 0,5V/Oct) + Balanced CV extension

*  External trigger input /  gnd.bmp  ???  What does it mean?

= Switched trigger, S-trig whatever. Using reversed gate polarity should work.

Uh, and build the Midibox CV by following orders on the site and worry about scaling max voltages ect. later.

Moebius

Posted

Yes.

Most of this configuration stuff for MS-10 can be done from software setup. Only filter control is more problematic, so have a look at Midibox CV page and details on Balanced CV extension.. (not hard one to do)

Moebius

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