Bores are boring, music is not.

Hello Sherman,
I play a LeBlanc clarinet but am thinking of getting a Selmer. I am
jazz musician. I heard that in Selmer clarinets one, 10G or 10S is
favoured by jazz players. I also heard that one is conical inside and the other one cylinder-shaped. Can you tell which is which?
Regards,
Pekka Toivanen
Finland
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Hi:
This is not a question of bore dimensions, but which brand and model. You see, so much of this is based on folklore of one kind or another, but neither 10S nor 10G are noted fopr the playing of Jazz as far as Selmer is concerned.
The Selmer Centered Tone is generally well-accepted for the perormance of Jazz because the bore is a bit bigge? Or because Benny Goodman was purportd to have played one at one time or another. Certainly his name was used for advertising that instrument. In fact Jazz does not care which bore on which it is played.
The Centered Tone is bimilar to the Leblanc Dynamic, which has a similar bore size.
Either one will suffice and be pleasurable for Jazz, though as I always do, I must say, when I played Principal Clarinet in the Milwaukee Orchestra, I had a set of Centered Tone clarinet, so, whatever goes in comes out.
best sherman

now, as to your exact question, the difference between the two bores, here is some information:

“For a cylindrical bore, the amplitude of the pressure variations for resonant modes are well described by sine waves. At the ends of an open finite cylinder (neglecting end effects), the pressure variations should be zero (i.e. the ends are a pressure node). At a closed end, the pressure variations should be a maximum (i.e. an “anti-node”).

For a conical bore, the amplitude of the pressure variations are not simple sine waves, but are described by sin(x)/x, where x represents a distance (in appropriate units) along the cone, and x = 0 is the apex. As is the case for the closed cylinder, a pressure anti-node must be present at the closed end of the cone, which occurs automatically for the function sin(x)/x, and a pressure node should be present at the open end.”

There you are, but even I get confused with that bore effect information.

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