Korg Mono/Poly

Hi

Brinkmann Music wrote:
> I have a Korg Mono/Poly MP-4.  I was able to tune each Osc on Circuit  
> board KLM-398.  However, as you ascend the keyboard up from the  
> lowest note to highest note, the pitch drifts up almost a 1/4 step or  
> so on all 4 oscs.  This is even on all and the same.  So, playing  
> octaves sounds a bit off.  The manual says tune from the middle  
> octave, perhaps a "stretch" tuning is deliberate?
Check the CV at the CV-Out; if this does not read V/Octave, then adjust 
VR2 on the processor board (KLM-356). If this reads correct V/Oct it 
would become ugly.

> Also, noticed after repeated playing of octaves that perhaps one out  
> of four repetitions will yield a pitch that is a bit off tune on just  
> one of the osc.  
Does it happen also in unisono mode or only in polymode?

> There is no pattern here, it is random as to which  
> osc is out of tune and when.
If in polymode you should easy find out whether it is a dedicated 
oscillator by turning down the volume of one oscillator after the other

> Lastly, some times if you play two notes together in POLY mode, and  
> then quickly play a single note or let off the first note, you hear  
> the note you just let off sound when you play the next single note.   
> Like a double voice trigger.  Changing release times and sustain  
> doesn't stop this behavior.  Maybe it is the auto damp function  
> acting up?
Sounds like the normal behaviour of autodamp with multiple trigger on.

Florian