**Try p;lugging any set of headphones that will fit the jack on the SD2, which will allow you to hear what the SD2 is doing while a MIDI based song plays back. Compare that to what you hear (or what you don't hear...) from the monitors.

If y0ou have properly connected the two Audio Outputs of the SD2 to two Line Inputs, L&R of your Presonus, but still have no audio from the SD2, it is likely that you need to visit the Control Panel or Mixer for the SD2 and set it to the Line Input. Consult the Presonus manual for exactly how that is done.


--Mac