Posted by ...or on November 17, 2003 at 11:23:20:
In Reply to: Re: Re: Valveblock for F Tuba? posted by yeah on November 17, 2003 at 01:32:22:
Go for a couple of fiberglass sousaphone bodies--usually, the #2 valve from the second valve section can be added to the first to form a #4 valve.