a technical question


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Posted by Paul Scott on September 20, 2000 at 16:02:34:

I own a BBb tuba, (730 bore) which has a fourth valve system equal to a 2-3 fingering. Can anyone tell me the approximate length of valve tubing I would have to add to convert it to a standard 4th valve=1-3 setup? In other words, the amount of tubing needed to add a half step. Thanks in a advance for any information.


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