Klarinet Archive - Posting 001028.txt from 1998/12

From: Fred Jacobowitz <fredj@-----.edu>
Subj: Re: [kl] register key tube
Date: Sun, 27 Dec 1998 23:10:07 -0500

> What effect does the amount of tube extending into to bore have?

I recently had my favorite technician work on a student's
dog-of-an-R-13-A-clarinet. He shortened the tube by almost 4 mm. It freed
up the horn at least 50%. It also raised the altissimo and the throat
tones - but that was all to the good on this instrument, which was
ridiculously flat in the throat tones.

>
> What is the purpose of this tube other than to avoid water in the
> underslung key?

None

>
> Is the internal amount necessary to come to the center of the bore?

No, as evidenced by my recent experience.

> Does moving the tube outward (more exposed) out of the body change Bb or
> 12ths. Assuming the same amount of key opening is maintained.

Yes.

-------------------------------------------------------------------------