Posted by Steve Marcus on May 02, 1999 at 22:13:28:
In Reply to: Re: Conn Tubas, Sousas, and Helicons, et al posted by Try to get Steve Marcus to answer this. on May 02, 1999 at 16:16:33:
Sorry, I only have the one page from the 1967 Conn catalog that displays the tuba that I own, a 25J.
Recent BBS posts have discussed the differences between the 20K and 30K sousaphones.
Sean's archives can be consulted for earlier posts describing the 20J, 21J, 24J, and 25J tubas/recording basses.
U.M.I. can provide information about Conn tubas currently in production, such as the 5J.