From: "John Kilpatrick"
Subject: Re: [CB] [CB Digest]
Date: Tue, 29 Mar 2005 10:00:15 +0100
> What about the european clarinet maker who makes some of
his clarinets
> with a hole in the tube just before the bell? Isn't
this done so that the
> bell doesn't alter the color of the clarinet's low E??
If I remember my Benade, a bell creates a "cut-off frequency" and an
array of open tone holes does the same. Since a single hole is not
exactly an "array", one wonders if this extra hole is really achieving
anything. (And if it is, then what a pity not to put on a key to add an
extra low note for occasional use.) Anyone actually experienced this
model with the extra hole?
John K
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From: "Wik Bohdanowicz"
Subject: Re: [CB] [CB Digest]
Date: Tue, 29 Mar 2005 10:13:26 +0100
> Anyone actually experienced this model with the extra hole?
I don't know about clarinets but the practice was used on
Ophicleides. Here it evens out the fundamental.
Wik
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From: "John Kilpatrick"
Subject: [CB] Scam?
Date: Tue, 29 Mar 2005 10:16:17 +0100
I've just reported user 8397ali to ebay as a possible
scammer. 154 items, catalogue descriptions, private auction etc.
Includes two bass clarinets.
Different items to the familiar 475 of the previous persistent
scammer. Suggest take a look and see what you think.
John K
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Date: Tue, 29 Mar 2005 08:05:04 -0800 (PST)
From: Andrew Phillips
Subject: Re: [CB] [CB Digest]
> > Anyone actually experienced this model with the extra
hole?
>
> I don't know about clarinets but the practice was
> used on Ophicleides. Here it evens out the
fundamental.
>
> Wik
Many oboes have this also. Student models that don't have
a low Bb have just a hole (or two - one on each side) and professional
models have a device which opens up a hole only on the low Bb
(presumably because for all other notes, the Bb key is open).
Also, take a look at a crummhorn next time you get your hands on
one. They usually have a whole series of holes.
I appreciate all of the information, but I should have added
that I was asking for a bell that doesn't add sounding length used for
the sheer purpose of
projection. Think of a Strohviol, where the pitch is
produced by means other than sounding length of the tube that is used
to project the sound. Without showing my hand, that is akin to
what I had in mind.
--Andrew Phillips
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Date: Tue, 29 Mar 2005 08:52:15 -0800
From: "Chuck Guzis"
Subject: Re: [CB] [CB Digest]
On 3/29/2005, Andrew Phillips wrote:
>I appreciate all of the information, but I should have added
that I was asking for a bell that doesn't add
>sounding length used for the sheer purpose of
projection. Think of a Strohviol, where the pitch is
>produced by means other than sounding length of the tube
that is used to project the sound. Without
>showing my hand, that is akin to what I had in mind.
Andrew, this is just an off-the-wall idea, but you might get
what you're after if you'd separate the bell from the instrument by a
suitably-sized air gap. This would decouple it as a resonator and
turn it into more of a megaphone.
Maybe?
Cheers,
Chuck
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Date: Tue, 29 Mar 2005 12:27:17 -0800
From: Craig
Subject: Re: [CB] [CB Digest]
Andrew, what you seek is unfortunately not possible. You want a
device that aids 'projection', that is, selectively amplifies certain
frequencies (something all bells do) but which doesn't otherwise have
an effect on pitch (something no bell does). Wind instruments have a
resonant air column as their signal source. Anything coupled to that
column is going to affect all characteristics of the resulting sound.
The only way to affect one parameter while leaving all others
unaffected is to use some system that re-radiates the sound in some
way, but without being coupled to the resonant column. This might be
done acoustically, as with passive radiators (sympathetically tuned
diaphragms not connected to the instrument) or via electronics.
Craig
***End of Contrabass Digest***