Rather than work up the _1792_ sysex strings it would take to cover panning 8 channels X 14 pan positions X 16 posible global channels I will explain what you need to put in the strings. First, this panning information I am giving is only for the M1 in combi multi mode. It appears the pan sysex can be sent for other modes but I have made no attempt to try other modes. The M1 must be in _edit_ mode, you can push the button on the M1 to set it to combi edit mode or send the following string to set the mode from your sequencer: F0 42 30 19 4E 01 00 F7 | ___|___ The number following the 3 is the global channel the M1 is set to: 0 = chan 1 . . 9 = chan 10 A = " 11 . . F = " 16 That is the only number you might need to change. Now the more complicated part. The following string pans the first position patch to "A": F0 42 30 19 41 0A 08 00 00 F7 | | | Global chan as <-| | | above | | | |_________________________________ | ____________________________| Pan position: 00 = pan to A Of the 8 channels available, this 01 = " " 9:1 refers to the position you see on . = " " . the M1 screen regardless of what . = " " . channel that position is set to: 09 = " " 1:9 08 = position 1 0A = " " B 09 = " 2 0B = " " C 0A = " 3 0C = " " C+D . " 0D = " " D . " 0F = " 8 With quite a bit of flipping pages back and forth I found the above information in the M1 manual pages: 122 - byte 3 (3n) global channel 125 - MODE CHANGE PARAMETER CHANGE 126 - settings for mode change 128 - note*5 pan settings 131 - page & position settings It appears that many settings can be changed with a sysex message while a song is playing, such as effects and the parameters of effects. Now that you completely understand how to use sysex, the sky is the limit. This page looks O.K. using Windows notepad, hopefully your wordwrap setting won't mess up the format. Enjoy, Tom Olson CIS # 71431,662