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Author: Tom Henson
Date: 2009-01-07 21:57
Hello Micke,
I am happy to hear that there is some improvement, but understand and agree with you that lowering the pitch in the upper register will also have a corresponding effect on the 12th below it.
This is, in fact, the same issue many clarinets have, regardless if it is French, German, or whatever.
Tuning the 12th is problematic for everyone. Wurlitzer clarinets have what is called "Wide 12th's" in the left hand. Low or just right on the bottom 12th but high on the top. Some clarinets (not Wurlitzer) can be just the opposite. Low on the top and high on the bottom. That would be narrow 12th's. Wide 12th's is more common though.
I believe that Wurlitzer should also consider the barrel as well when working on the tuning. Perhaps they do. I know for a fact that those that make custom barrels on this list have successfully address wide 12ths with just the barrel, or a combination of barrel, mouthpiece, and clarinet work when it is really bad.
Another observation is that Wurlitzer uses shorter barrels on their Reform Boehm clarinets because the upper joint is longer than on a French clarinet. Other RB clarinets also have the short barrels as well as Ohler clarinets. However, that means that there is less bore length in the barrel to work with. I would have to ask someone that makes barrels whether this makes it harder to tune or not.
I know that Morrie Backun does make barrels for these clarinets and I had the opportunity to try some out for a while. However, I was new to them at that time, so I am can not say if they helped or not. I was only ask to try them out, so it was not a case where I had asked to have them made in order to fix an intonation issue. Regardless, it would not be wise to order these unless you had the chance to see him in person. He does not stock these and the chances that he gets it right the first time without having the clarinet in his hands is slim.
Another thing to keep in mind with the Reform Boehm clarinets is that the top of the upper joint is critical in how it works together with the shorter barrel, more so than on the French clarinets. This would explain, in my mind, why they are so sensitive to different mouthpiece/reed combinations.
As an example of what can be done with this issue, Leitner & Kraus found a way around this very problem by putting the tenon from the top of the upper joint onto the bottom of the barrel, which makes the bore of the barrels longer. The top of the upper joint simply has a socket now. This is the set that I have from them and the intonation on these is excellent. The barrel that I use with both L&K clarinets is 65.5 mm in length, almost the same length as a standard French barrel.
Leitner & Kraus also told me this allows them to change the voicing of the clarinets as well by changing the bore in the barrel. I can't wait to visit their workshops and try different barrels out to see if this is true. I'm pretty happy with the ones I have, but they may have some I will like even better.
I would be happy to e-mail a picture of this to anyone that wants by contacting me directly.
One last thing. Micke also said that he found it better to use a differnt mouthpeice for the Bb and A. I can confirm this is true of me also. I use the N1 on my Bb. There are several mouthpieces I like with my A. I like my Viotto N1+2, Wurlitzer P4, Leitner & Kraus T1 and a Leitner & Kraus F10.
Tom Henson
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Re: Problems with intonation in Wurlitzer Reform Boehm new |
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The Clarinet BBoard
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