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

1930 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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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?

This "bore" discussion should keep in mind that for horns to be tenors, they have to share the same volumetric displacement inside. Having a "big" bore at one cross-section dictates having smaller dimensions elsewhere.
Yes, the "bore" is really referring to the way that it "flares" out in the cone. This is what the Rascher people talk about when they refer to the parabolic bore. It isn't a different volume, just different proportions in different sections.
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