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Re: Still got anawful buzz in keywork

Author: David Spiegelthal ★2017
Date: 2005-10-21 02:41

Often a buzz is caused by a miniscule amount of free play between a key tube and the rod screw running through it -- this can be corrected by swedging (swaging) the key tube -- compressing it to fit more tightly around the rod.

Also, the four-spatula key cluster is very prone to buzzes from mechanical interferences, one of the most common being the upper top spatula (Eb/Ab) getting bent down a bit and closing up the very slight gap between it and the the tube of the next spatula which runs along/underneath the upper one. It's hard to explain, but if you look closely at that cluster you'll see what I mean.

It could be a loose bell ring (usually the one at the large flared end) which is buzzing on the 'long' notes. Try clamping the bell between your legs while you play and see if the buzz disappears.

It could be a loose register vent tube --- very easy to check that -- take off the register key, grab the vent tube with your fingers and see if you can turn it or pull it right out of the wood (you shouldn't be able to).

It could be buzzing of the pins at the ends of the two long l.h. spatula keys (where the pins go into the corresponding holes in the two r.h. cluster keys), if the 'fishskin' wrapping around the pins is worn or has fallen out (which is extremely common).

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