Posted by Mark F. on August 01, 2001 at 00:56:24:
In Reply to: Re: 2J vs. 3J posted by Billy M. on July 31, 2001 at 23:42:03:
from what i understand, it mostly has to do with bell size, (the 3j is bigger) but I remember Richard Murrow telling me that they had different valve sections on the different models. He would be the one to ask, as he knows more about Conn tubas than anyone other than Harvey Phillips himself.