Re: about that 3rd partial...


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Posted by mike on January 20, 2002 at 08:23:07:

In Reply to: about that 3rd partial... posted by Paul Scott on January 19, 2002 at 06:37:36:

I have a factory bulletin from the Conn factory dated 1942. The engineer says they experimented with different horns and with the tubas, decided to put an enlargment in the tubing where the antinode of the 5th mode of vibration is. By putting an enlargment here it would raise the 5th mode slightly ,d on the BBb tuba,however this enlargment lies near the node of the 3rd mode,f on theBBb tuba. So, in order to raise the 5th they flattened the 3rd mode. The engineer felt this was a suitable trade -off.


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