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Re: weak note : collapsing F4

Author: Luuk ★2017
Date: 2020-10-29 13:38

From your description I expect the pad under the A is not closing enough while your left thumb closes the tone hole at the underside. Check the joint between the bottom tone hole part and the cup under the A (at the right side of the body). Many clarinets have a slice of cork glued between the two metal parts of this joint in order to reduce noise. This cork may have come off, leaving the hole under the A key a little open while it should be closed.

Probably the pads are 'seating' themselves. When new, they are flat but after a while they develop ring-like impressions where they press on the chimneys. This can create micro leaks, especially when two pads are involved: one may be impressed more than the other.

After a repadding, especially a complete one, the repair person should offer a free service after a short period. He or she should check the seating and correct when necessary.

Regards,

Luuk
Philips Symphonic Band
The Netherlands

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