Posted by stan on December 29, 1999 at 00:44:44:
In Reply to: Euph: Which is deeper and sweeter? posted by Terry M. on December 27, 1999 at 18:25:04:
I'd pursue the mouthpiece question further.  A 51D is indeed an excellent choice for a euphonium, but the larger bore instruments may need something even bigger.  I was recently trying out a friend's Willson 2704 and found that the sound became a lot mellower with a Bach 3G that I had around for a large bore tenor trombone.  Technically it's a bass trombone mouthpiece, but most euphoniums are after all larger bore instruments than a bass trombone.  I found the 3G a very comfortable mouthpiece with that instrument, and the high register was still strong.  Now I have to loan it to my friend the owner of the Willson.  I'd suggest taking your instrument into a music store and trying out sizes in the Bach 3 and 4 range.