DudelookingfortheCC wrote:
On a CC tuba, is it necessary to have five valves? what are the advantages? What if you have one of those [tubas] with only four valves? If so many CC tubas are made with five valves today, does that mean that the four valve beauties from the olden days are outdated and rendered useless?
No, it's not "necessary" to have 5 valves. Chuck Daellenbach manages just fine in the Canadian Brass on a 4 valve CC. The Elephant (Wade) played a 4 valve Alexander 163 in the Mississippi Symphony for something like 12 or 15 years. I'm not absolutely sure, but I believe his current Holton 345 is a 4 valve, too.
I've had two 4 valve CC tubas, one Rudy Meinl 5/4 and (currently) an Alexander 163. I manage just fine doing all of my contra tuba playing on a 4 valve CC. Both the Rudy and the Alexander are very open tubas anyway, so it's hard to comment on if the lack of a 5th makes the instrument even more open, but it stands to reason that it would. You decide if that's a good thing or bad thing.
I've also had two 4p+1 CC tubas (ie 5 valvers). They were fine. All of the instruments themselves were so different that I can't really compare the 4 valves I've had vs. the 5 valves I've had.
With a 5 valve you have more fingering options. It's as simple as that. The 5th valve is not an automatic low register button. At the same time, having 4 valves (in my opinion) is not a handicap. I can play all of the same notes on my 4 valve tubas that I could play on my 5 valve tubas.
Now, on a bass tuba (F tuba in particular), I'd consider the 5th valve a "must have." I like to have it available for low register access, but do also use it for some higher or in the staff alternates when the mood strikes. I can't really comment on Eb tubas, never had one or put much time in with them.
The great tubas of the 4 valve era are still great tubas today, they've simply take a back seat to the 5 valvers developed during the great arms race of the last decade or two. If you find a good 4 valve tuba, be open minded.
EDIT: One of the latest trends in major orchestras is for playing some of the "big" pieces (Wagner, Prokofiev) on a BBb tuba, especially the Fafner. The principal tubist in the orchestra I work for has a Fafner he uses for such things. It's a 4 valve. He does just fine.