When you jump over from a large bore (i.e. 12 inch bell etc) to a medium bore euphonium (11 inch bell), you can play a lot louder, fairly effortlessly. It's as if euph's with a smaller bell take less air, and the sound can be controlled more easily. Can we deduce that some of the finest player's from decades ago had it easier since some of the old Imperials and 'New Standards' were more free blowing? Opinions/ideas please!