The MIDI ports on the Mastermind GT, LT and PBC are bidirectional, and one result of this is that the MIDI In (or Remote In) port can be used as a secondary output. This requires a few settings changes on the Mastermind, and a special MIDI cable.
- In MIDI Settings, turn on "Bidirectional MIDI"
- In Device Settings, set "Port" to "MIDI In" (or "Remote In" on a GT) for any devices that will connect to the MIDI In port
The cable needed to connect something to the MIDI In port looks like a standard MIDI cable, but is wired differently:
PIn 1 - Pin 4
Pin 2 - Pin 2 (use the bare wire for this connection)
Pin 3 - Pin 5
Pin 4 - PIn 1
Pin 5 - Pin 3
The connector shields are not connected to anything.
Custom cable builders like Best-tronics (www.btpa.com) can make this cable for you if needed.