Hi Roger,

It sounds like your drum machine doesn't respond to MIDI volume commands (not too surprising). The closest thing to a work-around I could think of is to highlight your entire drum track, and hit the Edit menu, then Change Velocities. It's not the best way to control volume, but should work.

Another option would be to record the output of your drum machine onto an audio track in RealBand, and adjust the volume of that track.

Thanks
Kent
PG Music