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Re: Effects of barrel bore and taper

Author: The Doctor ★2017
Date: 2013-02-06 12:40

Disclaimer - I sell Chedeville (R) barrels and mouthpieces which are CNC machined from a proprietary Chedeville rubber.

Back to Moenig's observation on Ed's problem notes - there is a definite interaction in sound quality and intonation between mouthpiece and barrel which may be person or hardware specific. First, the instrument below the barrel must be checked for problems that may fix the whole situation of intonation.

Without a doubt the barrel taper can help certain intonation problems like 12ths. But as soon as you approach one problem you must know that other registers are also affected.

Working with the "Barrel Guru" Dr. Allan Segal for several years on tapers for the Chedeville hard rubber barrels also indicates to me that different materials for barrels will also affect tone and intonation due to a specific taper or multiple tapers within one barrel so now we see that several different variables are interacting.

The tapers that Allan finally produced for the hard rubber barrels are different than those for wooden barrels, for at least my Buffet setup, and seem to work for some other's setups as well. The cost of a custom made tapered CNC reamer can be very expensive and care must be used to program where the reamer depth is set in different barrel lengths but there is nice consistency not available using hand reamers.

So here we have an art form where, in my view, experience from many instruments and materials as well as an artistic talent are important for a good barrel maker. This however is a great area for experimentation for those interested in acoustics.

L. Omar Henderson
www.doctorsprod.com
www.chedevillemp.com

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Effects of barrel bore and taper new

Tony F

2013-01-25 00:01