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Re: A Clarinet troubles

Author: Paul Aviles
Date: 2018-09-02 11:23

So take the top joint (by itself); cover the holes with your left fingers as if playing; plug the bottom with the heal of your right hand (fleshy part at base of thumb); then place mouth at top and blow. What happens?

You should feel the pressure against your fingertips, but no air should leak out and you should hear no air leaking out. This is the positive pressure test.

Now do the same thing, but drabs of air IN (using tongue....if you do this sort of thing with a coke bottle, your lips and teeth will eventually start to be pulled into the bottle). What happens?

You should feel the tips of your fingers being pulled down into the tone holes, the heal of your right thumb being pulled into the bottom and your lips being pulled into the top. It should hold this pressure until your release your lips (or fingers or heal of right thumb). This is a negative pressure test.

You can do the same thing with the bottom joint. You just need to hold the right hand "B" key down as well as cover the holes with your right hand.

With the bottom joint, you do get the "Ab/Eb" key to flop open with positive pressure, but it should take a little effort.

.............Paul Aviles

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