 The Oboe BBoard
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Author: LongCat
Date: 2014-11-03 03:00
Hello everybody! I recently purchased a used Cabart 74 and it's been working pretty well for me except for one little thing. Whenever I play the half hole C#, it creates a buzzing sound. Originally, I thought there was something inside of the tone hole, but that wasn't the case. In fact, I think it's something with the top joint, as that is where I'm hearing the buzzing from. The Eb and D are both playing okay, so I don't think it's a problem with the half hole.
Does this sound like an adjustment issue, or could it be something else? I do think the instrument needs a good adjustment, as I'm only getting about 5 seconds of suction from the top joint, and low notes are not speaking as well as they should. Otherwise the instrument is in excellent condition. It is crack-free, and the mechanism is working very smoothly. I'm not sure about this C# though. Does it sound like an adjustment issue?
Thanks
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Author: Chris P
Date: 2014-11-03 04:15
How much does the top fingerplate open by - does it open fully or is it screwed down so it opens only by a very small amount?
Former oboe finisher
Howarth of London
1998 - 2010
The opinions I express are my own.
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Author: wkleung
Date: 2014-11-03 05:23
I played a Cabart in school over 20 years ago, and it had the exact same problem.
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Author: LongCat
Date: 2014-11-03 06:00
The B key? Funny you should ask, actually. When I first purchased the instrument, it was screwed down a lot and had very little motion. I opened it up though, and it now completely clears the tone hole.
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Author: Chris P
Date: 2014-11-03 08:13
If you roll LH finger 1 down for middle and altissimo C#, D and Eb you should back the adjusting screw fitted to LH1 off completely so it opens fully.
If you lift LH finger 1 off completely for these notes (which is common practice in the UK with thumbplate and dual system players), then you'll have to screw the top fingerplate right down (but not completely) so it moves very slightly and adjust it until the notes speak easily.
Former oboe finisher
Howarth of London
1998 - 2010
The opinions I express are my own.
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Author: jhoyla
Date: 2014-11-03 11:10
Half-hole C# is not a good note, and many oboes seem to have problems there. It is often to do with the vertical diamond-shaped slit in the half-hole well.
I'm going to assume, also, that you roll your LH index finger to expose the half-hole, or that if you lift your finger, the key is fully screwed down.
Does your half-hole key have a vertical slit in it, or has it been completely drilled out? I have seen oboes where general woodwind technicians have drilled out the hole, thinking it was some sort of manufacturing error!
In fact, the LH index-finger half-hole MUST have a vertical slit of some type. Getting this slit just right is more of an art than a science. The technician I work with has a specially crafted tool for adjusting the width of the slit, and that was how he resolved a similar problem I was having with my Loree.
A pro oboe technician should be able to resolve this issue for you.
J.
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