Posted by Jacob on January 19, 2004 at 11:21:31:
I have a 681 4valve BBb from my school I play, and its treated me very well my only complaint being when I really get on the thing the sound will get away.
i was looking around for when I decide to buy a tuba and saw the 691 4valve, it seems it has a bigger bore and what caught my eye a larger bell (19.7" instead of 15.75")..
does anyone know how this horn's characteristics compare to that of a 681?
Just doing researching a bit..