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Re: Mouthpiece/Barrel/Upper Joint/ bore matching

Author: Alseg
Date: 2009-03-10 04:01

A step-off (narrower at the barrel entry and exit....ie mouthpiece exit is wider than the barrel entry, and the upper joint is slightly wider than the barrel exit) is NOT a big deal, and can have advantages.

So, the Answer to both questions is NO, but with one caveat....The mouthpiece exit bore should just about match. If the exit bore of the mouthpiece is wide (as it was on some Kaspars), then a matching barrel entry bore requires some narrowing of the barrel exit to maintain intonation in some clarinets (Buffet especially, but not in older Selmers). This is the origin of Moennig taper (Clark Fobes has a nice article about this).
http://test.woodwind.org/Databases/Klarinet/2000/01/000604.txt

Also, someone on the board once did a nice bunch of measurements correlating mpc exit bores (A Cicero Kaspar was one of the widest) and barrel entry bores.

Former creator of CUSTOM CLARINET TUNING BARRELS by DR. ALLAN SEGAL
-Where the Sound Matters Most(tm)-

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