by greddin » Tue Oct 12, 2010 7:23 pm
Well, I'm pretty sure I fixed this but I'm not sure why it's working really.
There's a section in my Roland A-90 manual titled "Controlling the A-90 with an External Keyboard". Apparently midi channel messages are received via Omni On and are assigned to Zones inside the Roland A-90. The A-90 has the following zones: EXT-A, EXT-B, EXT-C, EXT-D, INT-A, INT-B, INT-C, and INT-D.
In viewing these assignments, I could see that none of them were assigned. So I set then all to "On" and this time when I selected a Bank and Program in Metro it changed the sound as it should! Also the Apple MIDI Setup application would work as well when I sent a test sound.
...but every time I played a note it sounded weird. Like a funky duplex thing going on. Some notes were short sounding almost as if being cut off. Other notes were long and got stuck. My A-90 froze up and I had to power down. I knew I was on to something.
After powering back up, I went into what I think is Local mode on/off settings. Again there's a local mode setting for each zone of the A-90. I decided to leave all the external zones to off and turn just the internal zones on. This seems to have fixed the weird sounding notes and note stickiness.
Unfortunately the A-90 defaults back to default settings each time I power down so for now I've got to do this each time I power up. I believe I can save them as a Performance though. I just have to look into that.
I hope there's another A-90 / Metro user that could explain what all this means.
Thanks,
-Greg