Emu XL-7 & MP-7 User's Group

Greetings,

     My MIDI layout is:  Kurzweil PC2X keboard MIDI out --> XL-7 MIDI in.  No return MIDI cable is
in place.

     The other day I was playing some patterns on my XL-7.  Returning to my default mode which is
how I control the sounds from my Kurzweil keyboard, I found that the Kurzweil was buggered.  It
couldn't change programs, or only in a limited way.  Powering down and then back again fixed it. 
The question is: how could this have happened?  Is there the possibility of a small voltage or
something travelling backwards on a MIDI cable and fugging with the master controller?  This is
the only way the two instruments are connected, other than through a common ground at the mixer.

     Not a problem at all, just a little confused.

        Stephen






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