This is made entirely of brass - although I had to add a needle screw which isn't.
Also, I am unsure as to what the 'spider-like' diaphragm is made from.
Any-way, I would be grateful for any id information as I have never seen another one like it.
Thanks very much for any help you can give.
Please id unusual sound-box with tone-arm attached
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Re: Please id unusual sound-box with tone-arm attached
Most unusual. Are those four holes around the circumference to secure the gasket and diaphragm, or do you think there was a diaphragm guard fitted there previously?
- Curt A
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Re: Please id unusual sound-box with tone-arm attached
That must have been on a high end machine, since it's not pot metal. I would find a machine to use it on, in place of generic hardware or make a special project machine with this as the basis.
"The phonograph is not of any commercial value."
Thomas Alva Edison - Comment to his assistant, Samuel Insull.
"No one needs a Victrola XX, a Perfected Graphophone Type G, or whatever you call those noisy things."
My Wife
Thomas Alva Edison - Comment to his assistant, Samuel Insull.
"No one needs a Victrola XX, a Perfected Graphophone Type G, or whatever you call those noisy things."
My Wife
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Re: Please id unusual sound-box with tone-arm attached
I think they are just to secure the gasket.An Balores wrote: ↑Sat Jan 13, 2024 1:59 pm Most unusual. Are those four holes around the circumference to secure the gasket and diaphragm, or do you think there was a diaphragm guard fitted there previously?
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Re: Please id unusual sound-box with tone-arm attached
Interesting. Thanks Curt.
I think maybe it was a 'one off' exhibition type piece maybe ? I am only guessing though.
Great idea about trying on a spare machine or a special project !
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Re: Please id unusual sound-box with tone-arm attached
I was just having a close look at these four holes and surprisingly (to me) they do not contain screws. It seems that the inner brass ring actually twists off. I guess a special tool was used which engaged all four holes with small metal prongs.An Balores wrote: ↑Sat Jan 13, 2024 1:59 pm Most unusual. Are those four holes around the circumference to secure the gasket and diaphragm, or do you think there was a diaphragm guard fitted there previously?
Also, I am beginning to think that it may be a 'Sonora'. I do not know anything about this gramophone brand but one or two of their tone-arms look vaguely similar. (Two photographs 'below'). Particularly the part which joins the sound-box - kind of an odd 'dippy' shape. Also, the sound-box can be adusted to be side-ways onto the record or turned 90 degrees. Like the chrome one in the photograph below.
Some-what oddly I think that the diaphragm is made from very thin brass too.
So maybe a very early Sonora ?
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Re: Please id unusual sound-box with tone-arm attached
If you decide to part with it, I would be glad to figure out something to use it on...
"The phonograph is not of any commercial value."
Thomas Alva Edison - Comment to his assistant, Samuel Insull.
"No one needs a Victrola XX, a Perfected Graphophone Type G, or whatever you call those noisy things."
My Wife
Thomas Alva Edison - Comment to his assistant, Samuel Insull.
"No one needs a Victrola XX, a Perfected Graphophone Type G, or whatever you call those noisy things."
My Wife
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Re: Please id unusual sound-box with tone-arm attached
Thanks...
"The phonograph is not of any commercial value."
Thomas Alva Edison - Comment to his assistant, Samuel Insull.
"No one needs a Victrola XX, a Perfected Graphophone Type G, or whatever you call those noisy things."
My Wife
Thomas Alva Edison - Comment to his assistant, Samuel Insull.
"No one needs a Victrola XX, a Perfected Graphophone Type G, or whatever you call those noisy things."
My Wife
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OnlineInigo
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Re: Please id unusual sound-box with tone-arm attached
I vote as our colleague. It looks so interesting and well constructed... I would build a machine around this tonearm, and I would add a huge, well designed exponential horn that could be at the same quality level as the tonearm and soundbox, just to use them. I'm sure it would sound wonderfully...
Inigo