Author: clarnibass
Date: 2017-11-03 15:09
Just to make sure:
B, C and C# are completely fine, no problem at all.
G and above are fine, no problem.
then suddenly (i.e. it's not gradual) all notes from D to F# have the problem, pretty much the same? Or is it gradually worse in some way (up or down)?
A register key or mechanism problem is unlikely in this case, since it affects notes using both vents, but also no issue with some notes using both vents.
Try this: Rotate the sections (middle tenon) so the bridge and register are off, disengaging those linkages. Then play F# while, with your right hand (or have another person), firmly press G#, F# and E - these are the lowest key on the upper section (which is not pressed with a finger), the top key on the lower section (also not pressed with a finger), and the middle finger key in the right hand stack, respectively. Also press the C/G key (third finger left hand) harder than usual.
If it's not clear I can try to post a photo.
Is the problem still there?
This test only checks for a problem caused by the adjustment, not with any pad by itself in case it can't be forced to seal.
You can also try putting a plastic bag (maybe a couple of layers) over each pad and repeat the test, to see if that makes any difference.
Although unlikely double check that there is a tiny gap between the neck register key and the arm coming from the upper section which operates it.
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The Clarinet BBoard
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