Posted by John Swensen on December 17, 1999 at 17:54:51:
In Reply to: Valve Bore posted by Doug on December 17, 1999 at 16:48:59:
Doug, this is a common question that has been discussed often. I suggest that you search the archives for references to bore.
To answer you question, bore size, by itself, does not tell you much about a tuba. I have a .748" bore tuba that produces a far bigger sound than does my other tuba with a .840" bore. A much better metric might be some combination of bell size, along with the bores at one, two, and three feet from the bell.