You want to send it the following message:

SYSEX_OPEN EVENTIDE H4000 id message_code  <lots-o-bytes> SYSEX_CLOSE

where (0x means hex):

EVENTIDE is 0x1C

H4000 is 0x70

SYSEX_OPEN is 0xF0

SYSEX_CLOSE is 0xF7

id is 0

message_code is SYSEXC_USEROBJECT_SHORT = 0x3c

<lots-o-bytes> is “25d <num>” this is a text string

where <num> is 0 – XMT, 1 – THRU, etc.

 

So, for example, to set output mode to THRU, you would send (all hex bytes)

F0 1C 70 0 3C 32 35 64 20 31 F7

It will reply with a similar message, but message_code will be SYSEXC_VALUE_DUMP (0x2E)

That’s great. What would be the sysex format to enable/disable midi clock in?

Do you have a sysex guide for the H9 with all of these commands and arguments described?