Yes, rharv, that's what I discovered. The Coyote "default" selection results in all tracks getting the same DX sounds. If I assign Coyote to a track then only that track is affected. And that was what I was after, so I'm good now.

John, I'm familiar with Cakewalk's TTS-1 and it behaves sort of similarly in Sonar. It has to be assigned to a specific track. Only difference with it is, if it isn't assigned to a specific track, it doesn't do anything but just sit there.