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Changing bass reeds

Karl StetS

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Hello.
I'm new here, but to have found this forum.
I have a lovely tiny Septimo Soprani. Very compact and powerful.

The only thing I miss is lower bass notes.

So the question is : if I manage to find some bass notes one octave lower. And the plates are more or less the same size. Could I just put them in, or is there some air pressure themes that I should be aware about?

I imagine that I probably will have to tune as well.

I have access to quite a few instruments for searching parts.

All the best.

Karl.
 

JerryPH

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If the fit is physically possible, I am sure it is doable, however, you can expect the bellows to be used a lot more as deeper reeds need more air, so ou will be pushing/pulling a lot more.
 

debra

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Karl StetS said:
Hello.
I'm new here, but to have found this forum.
I have a lovely tiny Septimo Soprani. Very compact and powerful.

The only thing I miss is lower bass notes.

So the question is : if I manage to find some bass notes one octave lower. And the plates are more or less the same size. Could I just put them in, or is there some air pressure themes that I should be aware about?

I imagine that I probably will have to tune as well.

I have access to quite a few instruments for searching parts.

All the best.

Karl.

If physically possible then surely the reeds one octave lower will work fine. However, the reeds on the bass side do come in specific octaves to make a nice overall combination. When you make the lowest octave lower there will be more of a gap to the next octave. The end result may not necessarily sound better than the original setup...
 

Sebastian Bravo

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Ive done that in a Weltmeister. Just needed to add some weight to the tip of some lower reeds. 
(Lowest note was G1, and now its E1)
[video=youtube]
I also modified a Crucianelli to work like that, but i have no video/photos :(
Talking about air consumption, i didnt notice a significative change, but if you find it, you should search for A Mano reeds for the lower octave.
 

Karl StetS

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Hello again and thanx for your answers.

Bravo por tus modificaciones Sebastian. Me parace un trabajo excelente.

Adding weight to the reeds is an interesting option. What is the normal material for this?
I imagine a lead solder (that would be my first idea) will not last with all the vibration.

Thanx again.
 

Sebastian Bravo

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[video=youtube]
you should watch this video, theres a part where he solders the weight to the tip.

(I did it with electronics solder, it still works fine, but isnt the best option)
 

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