Posted by Doug Whitten on April 03, 2002 at 11:27:06:
In Reply to: Info about 4 valve sousaphones posted by Patrick on April 02, 2002 at 16:00:18:
Mirafone makes a 4 valve sousaphone in BBb. They have a fairly large bore and are quite heavy. According to Dan Sipes, the University of North Carolina had a few of these. Please note, all of this information came from the Tuba Exchange in 1996. These 4 valve models may no longer be available.
I have heard that the Cerveny Helicon is a nice sounding instrument and is available with 4 rotory valves. hope this helps.