You cannot "wing it" on an MCX. You need the schematic logic provided by the manual. The biggest source of panic for new MCX owners is the Routing matrix .
The Dynacord MCX series uses a for power. It is not a MIDI cable. It is not a standard 5-pin audio snake. If you lose the original power supply, or if your dog chews the cable, you have a problem. Dynacord Mcx 16.2 Manual
And the band will think you’re a genius. You cannot "wing it" on an MCX