Before I can make suggestions - why do you have each MIDI device on separate MidiSport ports?

Also I fairly certain the 4x4 doe NOT have a "merge" feature: i.e., when PC is off or not connected there is NOT WAY to route MIDI data from a controller, e.g., JV30 into the 4x4 and out to other devices - is there?

If the answer is NO you can not then maybe IF you put device THRU to next device IN then you could drive everything with the JV-30 even with MidiSport and PC off? You want to use the THUR's so you don't have to worry about control channels (as much)

THIS IS JUST AN EXAMPLE:

1. When connected to PC for Sonar (or other DAW use):

MIDIsport Port 1 -> JV-30 THUR out -> JV880 THRU out -> MVS-1 THRU out-> EMU Proteus FX THRU out -> MBD-1 Drum/Bass


2. When NOT connected to PC or the MIDISPORT is OFF:

MIDIsport Port 1 -> JV-30 OUT (not THRU) -> JV880 THRU out -> MVS-1 THRU out-> EMU Proteus FX THRU out -> MBD-1 Drum/Bass


Neither is NOT AN IDEAL path since there would some MIDI signal delay (3 to 5 ms per in to out) by time signal got from PC to last device of about 15ms - so putting drums last was a dumb example on my part - but you get the "picture"

You could LEAST used device at end

or you could get a MIDI Patchbay and then you can control anything with anything via a Patchbay Program ("patch") selection and then you really could use just a MIDI 1x1 to connect to PC

PC --> patch bay --> all, some, one (even with PC turned off)

Larry

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