Ok, relevant information is on page 111 of the Octatrack 1.25b manual.
The following information assumes keyboard->OT midi-in, OT midi-out->other device. All trig midi channels set to OFF.
In midi mode, the octatrack’s auto-channel input will send out to the midi track’s current channel setting.
If you exit out of midi mode, auto channel will control the OT ‘as normal’. However, midi channels will still pass data from in->out on their assigned channels.
OT set to auto channel 1, external synth set to channel 2, midi track 1 set to channel 2. this is what things look like:
Midi mode on, focus midi track 1 -
Keyboard ch 1 -> OT out channel 2
Keyboard ch 2 -> OT out channel 2
Midi mode off, focus trig track 1 -
Keyboard ch 1 -> OT auto-channel controls on trig tracks.
Keyboard ch 2 -> OT out channel 2
So this means that I can simply setup the midi sequencer tracks to output to the channels I want. My keyboard always stays on the OT auto channel. When I want to use my other devices, I simply pop into midi mode and select the appropriate track. Leave midi mode and I’m controlling the OT again.
This works perfectly as the entire time I’m sending clock, transport and program change out of the OT as well. I now have 6 synths hooked up beyond the OT with no issues except a bit of clock lag.
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