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big bore/big chamber, small bore/small chamber?

1927 Views 14 Replies 8 Participants Last post by  bfoster64
I've noticed while trying out mouthpieces, that there is a big difference between my old Selmer Signet and my new Chicago Jazz Series in responsiveness with the same mouthpiece.

My own BergLarsen Steel 115/2/SMS responds great on the Selmer, but is more difficult to play, especially in the low register, on my CJS. The sound is great, but it requires a lot more control.

On the other hand, trying a Lebayle jazz (great mouthpiece by the way!) I noticed it played beautifully on my CJS, but had a boring sound on my Selmer. I didn't buy it (yet), I want to try out some other ones before getting me a new mouthpiece. But it's defenitely a candidate, more than the dukoff I tried (honkin' only), or the Meyer (far too classical for me)

I believed I read something here about an influence of the bore on the size of the chamber optimal for that saxophone. Is there any mouthpiece specialist willing to shine a light on this? It would help me in my search for a new mpc, as it can narrow the search.

Thank you in advance.
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Saxland said:
Is the Chicago Jazz alot more freeblowing than the Selmer Signet?
Quite the other way around I would say. Even with a bent neck (and thus some intonation problems), the Signet is more freeblowing. As far as I know, it's a Buescher stencil.
hornimus said:
I could be wrong here, but if you start measuring the IDs and lengths of body tubing, compare bow dimensions, etc. I venture the CJS and the Signet are going to be too close physically to infer any expected differences in mpc compatibility. Could it be their necks?
Well, if I try to put the neck of my CJS on the Selmer, I have a few mm(!!!) space left. The diameter of the tenon of the Selmer Signet is a few mm bigger than that of the CJS. So I doubt there is not that much difference between both. In fact, one can see the difference in dimensions with the eye.

The Selmer Signet is supposed to be a Buescher stencil
The CJS is, according to my sax teacher, more built like a Selmer SA.

Thank you all for the nice explenation of the concept "bore". This is interesting, I learn a lot about that "copper music tube" :D

I hope a mouthpiece expert can tell something more about the interaction between the bore of the sax and the chamber. Thanks for the link, Lamplight.
Mojo, your site rules, really. Those FAQ have opened my eyes on more than one issue. Thank you.
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