My H7600 is packaged inside a box because next week I'm going to send to you for a warranty repair. I can't try the new method until you return the H7600 to me. I need that you explain me the "old" system exclusive method used by the DSP 4000 because I will use it too. You say that it's dificult but don't worry, I'll try to figure it out. I'm all ears.