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CC to BBb

Postby IsaacTuba » Fri Oct 12, 2018 12:40 am

Just out of curiosity, I’d never actually try to do it. Is it possible to covert a CC tuba to BBb by adding tubes and piping? It’d be an interesting project to try and figure out.
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Re: CC to BBb

Postby YORK-aholic » Fri Oct 12, 2018 1:27 am

Well, yes, just add about 2 feet to the main tuning slide.

You didn’t ask if it made sense to do it.

All joking aside, the Getzen G50 was set up as a 4+1 CC but you could rotate the 5th valve or linkage or something so that the 5th valve defaulted to being in use, lowering the horn to BBb.

I believe it was even marketed as an aid for BBb players trying to learn CC fingerings.

I don’t know how being able to fall back to BBb fingerings would help someone make the switch, but...
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Re: CC to BBb

Postby iiipopes » Fri Oct 12, 2018 8:57 am

The problem is the ratio of cylindrical to straight tubing. That can foul up overtone series intonation.
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Re: CC to BBb

Postby Art Hovey » Fri Oct 12, 2018 11:32 pm

Mirafone used to sell a double-loop tuning slide for converting their CC tuba into BBb. Back in the mid-1960s one of their advertising photos showed someone using one. In the early 1970s the flat-whole-step 5th valves started appearing, so anybody with such a horn could switch it to sort of a BBb tuba just by holding down the 5th and pulling some slides. But the result was never satisfactory as a BBb tuba.
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Re: CC to BBb

Postby DouglasJB » Sat Oct 13, 2018 11:28 pm

I believe the B&S Neptune is set where the stop arm on the 5th can be turned (engaged when valve is not depressed) and a slightly shorter 5rh valve (to put the horn with 5th in BBb). I believe this was done for the German market, but I could be mistaken.
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Re: CC to BBb

Postby Tabor » Sun Oct 14, 2018 7:36 am

If you used a cc tuba that was based on a B-flat tuba design you may be able to (re) introduce different (like the original design) parts that taper more slowly.
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Re: CC to BBb

Postby Three Valves » Sun Oct 14, 2018 9:51 am

DouglasJB wrote:I believe the B&S Neptune is set where the stop arm on the 5th can be turned (engaged when valve is not depressed) and a slightly shorter 5rh valve (to put the horn with 5th in BBb). I believe this was done for the German market, but I could be mistaken.


Can an Eb be played as a BBb successfully the way??
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Re: CC to BBb

Postby roweenie » Sun Oct 14, 2018 10:23 am

Three Valves wrote:
DouglasJB wrote:I believe the B&S Neptune is set where the stop arm on the 5th can be turned (engaged when valve is not depressed) and a slightly shorter 5rh valve (to put the horn with 5th in BBb). I believe this was done for the German market, but I could be mistaken.


Can an Eb be played as a BBb successfully the way??


Isn't it tuba folklore that AJ got into Curtis by taping the 4th valve down on an E flat tuba, making it a de facto BB flat horn?
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Re: CC to BBb

Postby Art Hovey » Sun Oct 14, 2018 10:32 am

I met a tubist from the Salvation Army New York Staff band back in the 1960s who said he studied with Bill Bell using his compensating four-valve Eb tuba. He said he used it as a BBb tuba for par of his lessons by clamping down the 4th valve. But I do know that it would be pretty awful on a non-compensating tuba.
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Re: CC to BBb

Postby Radar » Sun Oct 14, 2018 11:44 am

It would probably be easier and you would get better results trying to find someone with a similar horn in BBb who wanted to switch to CC and be willing to trade horns. Put the word out there on here, and other Tuba related sites on FB etc.
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Re: CC to BBb

Postby YORK-aholic » Mon Oct 15, 2018 2:17 pm

Three Valves wrote:Can an Eb be played as a BBb successfully the way??


My memory is terrible, but I believe Arnold Jacobs auditioned for the Curtis Institute on an old Eb with the 4th valved held down and played as a BBb...

As alluded to above, you are messing with the ratio of cylindrical to conical tubing. Having said that, you are messing with that same ratio everytime you push down one of those valve thing a ma bobbers.
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Re: CC to BBb

Postby Ken Herrick » Tue Oct 16, 2018 3:04 am

Yes to the Jake story.

I often used his Holton CC for lessons. By using a rubber band to hold the 5th valve and pulling slides it made a pretty good BBb.

That was certainly a lot easier than lugging my King back and forth by "L", train and a fair walk from the station to his house.

For that matter is beat hauling a tuba up and down the steep, narrow steps to his studio in the basement.
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