New Bach 42AF rings at B flat below middle C

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JWMbone
Posts: 2
Joined: Jun 25, 2018

by JWMbone »

Has anyone had the experience of a Bach 42AF ringing at B flat below middle C? It seems when the horn is cold it doesn't happen as much, but when warmer it seems to effect the back pressure of the horn. I have held the bell in several places and it seems to reduce the vibration.

Also what are the adjusters for on the bell by the tuning slides?

Any suggestions?
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castrubone
Posts: 220
Joined: Apr 09, 2018

by castrubone »

Feeling the horn vibrate with resonance is a good thing IMO! I wouldn't try to dampen it...let it ring! It must be a particularly sweet note on your horn.

The screws are to make disassembly of the axial flow valve section easier when it needs maintenance.
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LeTromboniste
Posts: 1634
Joined: Apr 11, 2018

by LeTromboniste »

The bell on my early 90s 42 has always rung very strongly on that Bb
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Nhtrombone
Posts: 57
Joined: Mar 26, 2018

by Nhtrombone »

My mid 90s 42K rings LOUDLY on As in all registers - but especially on A above Middle C.
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JWMbone
Posts: 2
Joined: Jun 25, 2018

by JWMbone »

At the time the horn rings it seems to have a restricted air flow as i feel some back pressure. Are others feeling this as well??
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mrdeacon
Posts: 1225
Joined: May 08, 2018

by mrdeacon »

Well there are two kinds of possibly ringing with a horn...

There is when something is ringing in your horn like you have a leak or a loose solder joint. Maybe one of your screws isn't tightened all the way down?

And there is your horn being resonate whether as a whole or just the bell. Which is what the other posters were describing.

I have a feeling you're describing the first one... because the second one should have no effect on how the blow "feels".
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imsevimse
Posts: 1765
Joined: Apr 29, 2018

by imsevimse »

[quote="castrubone"]Feeling the horn vibrate with resonance is a good thing IMO! I wouldn't try to dampen it...let it ring! It must be a particularly sweet note on your horn.

The screws are to make disassembly of the axial flow valve section easier when it needs maintenance.[/quote]

It depends. If you just feel vibration it could be a good thing but if the horn sings it is disturbing. I would not like a horn that behaves like that on certain notes.

/Tom
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Doug_Elliott
Posts: 4155
Joined: Mar 22, 2018

by Doug_Elliott »

I have experienced that with some horns that ring too much. There is such a thing as too much bell vibration.
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Neo_Bri
Posts: 1342
Joined: Mar 21, 2018

by Neo_Bri »

[quote="Doug Elliott"]I have experienced that with some horns that ring too much. There is such a thing as too much bell vibration.[/quote]

Agreed. I'd go one further (my personal preference): I don't really like any ringing at all, as it somehow feels like the horn isn't even up and down the horn. If it resonates a lot on Bb, do I need to back off on that note to compensate, for example?

I find a ringing in the horn, anywhere, to be distracting and disturbing.
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lauriet
Posts: 73
Joined: May 06, 2018

by lauriet »

I had the same issue with my brand new Yamaha 354. I hear a ringing when I play C above the staff. I took it back a the tech said there was nothing wrong. No one else seems to hear it. If I twist the slide a little it does reduce, so I am convinced that something is vibrating. I suppose I will have to live with it and hope that one day it will become obvious, but it is a bit 'off putting'