 The Clarinet BBoard
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Author: Clarineteer
Date: 2012-08-10 15:34
Can anyone please tell me where I can find a chart that has the pad height measurements for a Bb clarinet.
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Author: Chris P
Date: 2012-08-10 18:18
These are Yamaha's recommended ventings, so use them as a general guide and make any alterations as you see fit (all measurements in millimetres):
Lower joint:
Low E/B - 3.6
Ab/Eb - 2.7
B/F# key - 2.7
RH rings - 2.7
Upper joint:
C#/G# - 2.5
Eb/Bb keys - 2.5
Side F# - 2.5
Lower trill - 2.3
Upper trill - 2.3
LH1 ring - 2.1
Throat G# - 2.1
Throat A - 2.2
Speaker key - 1.8
The LH2 ring key pad venting is determined by the venting of the RH rings and the RH F/C and F#/C# key pads are determined by the venting of the low E/B pad.
Former oboe finisher
Howarth of London
1998 - 2010
The opinions I express are my own.
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Author: Caroline Smale
Date: 2012-08-10 18:22
I have seen a list for Yamaha clarinets somewhere in their documentation but every make/model will be somewhat different.
If you want a broad outline then the Yamaha material may be helpful.
Experienced techs use their experience to get the optimum balance in regards of intonation and clarity of tone for each instrument
Edit - Chris's post crossed in mail with mine so you have your info.
Post Edited (2012-08-10 18:23)
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Author: rtmyth
Date: 2012-08-10 20:34
Tricky business; one of the reasons I used cork.
richard smith
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Author: Clarineteer
Date: 2012-08-10 20:51
Thanks Chris. I really appreciate it. I was mainly interested in R13's venting according to Buffet specs.
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Author: Chris P
Date: 2012-08-10 21:17
I don't think Buffet have published their ventings, but you'll be safe using Yamaha's specs.
Do note on Buffets the top joint Eb keys do tend to open a fair bit - probably a bit more than the 2.5mm Yamaha recommend, although you may find one new Buffet may have slightly different ventings compared to the next one you see.
Former oboe finisher
Howarth of London
1998 - 2010
The opinions I express are my own.
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Author: Ken Shaw ★2017
Date: 2012-08-10 22:27
François Kloc says that on Buffets, the C#/G# (left little finger) key pad is almost always set too low. You should be able to play low E, press the key and get a multiphonic. If you can't, open the key up until you do. Then do the same thing on low F, F#, G and G#. This made a noticeable improvement on my R13s.
Ramon Wodkowski says that English-bore clarinets require generous venting -- much more than French-style. I think this could also be true for French large-bore clarinets such the Selmer Centered Tone or Series 9 and earlier models.
Ken Shaw
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Author: Chris P
Date: 2012-08-11 08:41
You'll be able to hear if the ventings are too low when playing in the lower register as they will sound stuffy - the notes that will suffer most if poorly vented are low F, F#, G, Ab/Eb, low B when played with the sliver key, C, C#/Db, Eb, E, F# when played with the side key fingering, G, throat G#/Ab, A, throat Bb when played with both spaker key and side key fingerings - maybe it was easier to say the least affected notes are (in ascending order) A, Bb, D, F and F# when played with LH finger 1 only.
Always better to have more venting than too little.
Former oboe finisher
Howarth of London
1998 - 2010
The opinions I express are my own.
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Author: Clarineteer
Date: 2012-08-11 12:17
I have always used my ear and a tuner in the past but an expert repair tech told me that I should be measuring it to spec every time instead. Any thoughts on this?
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Author: clarnibass
Date: 2012-08-11 16:20
>> I have always used my ear and a tuner in the past but an expert repair tech told me that I should be measuring it to spec every time instead. Any thoughts on this? <<
If you check several new instrument of the same model from the same company, it is very possible (likely even) that the key heights are slightly different. At least to the accuracy of 0.1mm that some charts show. I've seen many instruments that required correction straight from factory, which had the key height set by the maker itself. For any advice, analyze it and consdier the ideas of the advice itself, regardless of who suggested it to you. This is always a good thing, but even more when the person giving the advice recommends a certain method because they were taught to do it this way, etc. which is sometimes the case. Never blindly follow a "recipe".
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Author: Chris P
Date: 2012-08-11 19:33
You could use a venting table as a general guide to work from, but still have in mind that every clarinet will require something different.
So by all means use the venting table as a point of reference so you have a degree of cosistency, but still tailor things to suit the individual - both the instrument and the player.
Former oboe finisher
Howarth of London
1998 - 2010
The opinions I express are my own.
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