There are a few potential sources of misunderstanding here:
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If you activate ‘PROG CH SEND’ in the OT’s PROJECT > MIDI > SYNC menu, the OT will send a Program Change message on the MIDI Channel that is also set in that menu whenever its pattern changes; this is irrespective of what you have programmed in the OT’s MIDI sequencer.
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The OT’s Bank Select feature in its MIDI sequencer only uses one byte for Bank number (the MSB, CC 0), whereas the Sub 37 uses only the other byte (LSB, CC 32). (Bad Elektron!
Several people have raised this with Elektron but there is no sign of any fix to the OT.) -
Moog’s “banks” of sounds do not correspond to the MIDI definition of banks. (Bad Moog!
) If you read page 53 of the Sub 37 manual you will see that a Bank Select value of 0 will select Sub 37 sound banks 1 to 8 and a Bank Select value of 1 will select sound banks 9 to 16. You have to use an accompanying Program Change message to get the correct sound from each set of sound banks.
Several people have raised this with Elektron but there is no sign of any fix to the OT.)
) If you read page 53 of the Sub 37 manual you will see that a Bank Select value of 0 will select Sub 37 sound banks 1 to 8 and a Bank Select value of 1 will select sound banks 9 to 16. You have to use an accompanying Program Change message to get the correct sound from each set of sound banks.Options:
Switch the Sub 37 manually when you move from sound banks 1 to 8 to sound banks 9 to 16 or back, then use Program Change from the OT’s MIDI sequencer to select the Moog sound.
OR
Send MIDI CC 32 (value = 0 or 1) from the OT to select one of the two sets of sound banks, then use Program Change.
In either case, switch off ‘PROG CH SEND’ in the OT’s PROJECT > MIDI > SYNC menu unless you want OT pattern changes to control the sound change.