lucha wrote:Hi Surfwhammy,
You've got it! My problem is there ... No solution.
I may be wrong, but: in reading portions of the manual, it talks about the organ being capable of receiving velocity levels with MIDI Note On messages. Obviously the organ keyboard is not velocity sensitive, but perhaps it attemps to use MIDI transmitted velocities to control expression (or possibly volume), but then is also receiving CC#11 messages that also affect expression, causing conflicts?
I don't think the "MIDI A" and "MIDI B" ports are part of the problem, because from what I read that is related to MIDI output from the organ, I don't think it is related to input.
I have not seen your score, but I assume you have set up different staves for each manual (and one for the pedal board), with each one set to a different MIDI channel depending on the intended manual: #1 for Swell, #2 for Grand, #3 for Choir, and #4 for Pedal?
Also, a quick question: forget MIDI for a moment - does the Expression pedal do anything differently than the volume control? In other words, does it change the quality of the sound as well as the volume? I know some organs use a pedal to change the stops assigned to each manual, with an increasing number added as expression is increased, is that fundamentally what this organ does?
Anyway, I'm sure you're tired of experimenting, but I would try this, if you haven't already:
Use the organ' s MIDI filter function (page 35) to filter out ALL received CC messages. Then play your score. This will tell you if Note On velocity is used by the organ in any way.
If that doesn't work because velocity is ignored completely by the organ, despite what the User Manual says, then at least we have one more piece of data to work with.
I think a solution is still possible, I think part of the problem is that Notion isn't clear on how the organ works, Lucha is not clear on what Notion is trying to do, and most of us on the forum haven't seen your score or your organ, so nobody has had all of the information necessary to methodically solve the problem. Which is why I think it was a great idea for Surfwhammy to seek out and post the organ's User Manual, hopefully Notion will take a look and maybe it will get you one step closer to a solution.