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Author Topic: The Lost Magnetic Property (1930-1950 Pole Piece)  (Read 23281 times)

G_Motion

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The Lost Magnetic Property (1930-1950 Pole Piece)
« on: January 26, 2011, 06:47:27 AM »
In the late 1950's while disassembling old radio speakers I discovered a pole piece
that was not attracted to it's AlNiCo magnet.  I don't believe it was a defect, or a
false memory because, when the material was placed between the magnet and a steel
washer it acted like a magnetic funnel, sticking the three pieces together.

According to Orthodox Magnetic Theory   S = C(P-1)
and it's not possible for a material to have Permeability greater than one and
not be magnetized (Susceptibility) when in a field.    (attracted to the magnet) 

Any information concerning this would be greatly appreciated.

A $500 reward is offered for a piece with the property or the composition of it's alloy.
 

G_Motion

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Re: The Lost Magnetic Property (1930-1950 Pole Piece)
« Reply #1 on: January 30, 2011, 11:23:11 PM »
Where in the speaker the Pole Piece resides

e2matrix

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Re: The Lost Magnetic Property (1930-1950 Pole Piece)
« Reply #2 on: January 30, 2011, 11:36:16 PM »
Was this something you found in several old speakers or was it just in one?  Have you tried looking on ebay or other antique sources for old radio's that might have such a speaker?  You might also try some of the audiophile forums.  You might even find an old speaker designer around.  Good luck in your search and I'd be interested in what you find. 

phoneboy

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Re: The Lost Magnetic Property (1930-1950 Pole Piece)
« Reply #3 on: January 30, 2011, 11:53:02 PM »
just a though, could it have been a grain oriented piece?

Doug1

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Re: The Lost Magnetic Property (1930-1950 Pole Piece)
« Reply #4 on: January 31, 2011, 02:04:14 PM »
Are you sure it is an alloy and not graphite?

G_Motion

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Re: The Lost Magnetic Property (1930-1950 Pole Piece)
« Reply #5 on: February 01, 2011, 02:01:05 AM »
>Was this something you found in several old speakers or was it just in one?
just one

>Have you tried looking on ebay or other antique sources for old radio's that >might have such a speaker?

Yes but I don't know how to do a wanted ad on EBAY.

>You might also try some of the audiophile forums. 

Tried but no luck yet.

>You might even find an old speaker designer around.

If they knew of the alloy that would be ideal.

Good luck in your search and I'd be interested in what you find.

All I've found so far is current magnetic theory is seriously flawed.

Field theories were invalidated by Michelson–Morley, why they're still teaching this crap is beyond me.  What works in the microcosm isn't necessarily going to work in the macrocosm!  I am beginning to believe this alloy is the key and it's been deliberately suppressed.

I doubt it was a sintered material. It looked like aluminum but heavier though lighter than steel.

e2matrix

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Re: The Lost Magnetic Property (1930-1950 Pole Piece)
« Reply #6 on: February 01, 2011, 05:36:57 AM »
I know there used to be a way to do a 'wanted ad' on ebay but not sure if that is still around as I don't think it got used much.  Besides if you have a want ad there people are likely to think they can ask a lot more for something.  I would just do a search on 'old speaker' or 'vintage speaker'.  I just ran a search for 'old speaker' and got 741 hits.  It might take a while going through them but if you know what you are looking for you might get a nice deal on it.  I go by the belief that if it's not on ebay it probably doesn't exist anymore.  It might take a couple months of daily checking but it seems everything shows up there eventually.   

G_Motion

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Re: The Lost Magnetic Property (1930-1950 Pole Piece)
« Reply #7 on: May 12, 2011, 11:57:21 PM »
Reward increased to $1000

G_Motion

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Re: The Lost Magnetic Property (1930-1950 Pole Piece)
« Reply #8 on: June 21, 2011, 08:55:02 AM »
The reason I'm looking for a sample of this alloy should be obvious to over unity enthusiasts. When materials with permeability greater than one are placed between magnetic objects the force between them increases.

Start looking for this alloy!  As soon as I get a sample I'll have it analyzed and publish the composition.  The reward is increased to $2000.  There were hundreds of radio companies, one of them discovered the alloy and used it to increase the frequency response of their speakers. Old speakers need to be rebuilt to restore old radios, it would be easy to test the pole piece at that time.  Scrap speakers are easy to take apart. Test the pole piece, if it's not attracted to a magnet yet conducts the magnetic field you've got 2K, plus the composition of the alloy needed to make a magnetic motor.

A magnetic motor probably won't be able to harness a lot of energy, but it will prove the concept. The energy comes from heat. Permeability is a vector not a scalar, and so is temperature in permeable objects. The space between atoms in permeable materials is affected by magnetic fields and some of the the thermal energy ends up in the field, that's the energy the magnetic motor harvests.

Good luck       

vrstud

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Re: The Lost Magnetic Property (1930-1950 Pole Piece)
« Reply #9 on: June 21, 2011, 07:31:19 PM »
Is this what you are looking for?

"The constant leakage flux from the speaker would affect the scanning beam and distort the picture as well as the colors, etc. The best shielding is a canister or pot-shaped cover made of a high permeability metal called mu metal. It is basically a short circuit to the leakage flux so the flux can't get through the mu metal and radiate into the surrounding air. What happens is that the leakage flux tries to magnetize the mu metal, the mu metal generates a magnetic field of its own that resists the leakage flux. All of the magnetism stays within the mu metal so it isn't radiated. The foregoing was a simple explanation of how all magnetic shielding works."

forest

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Re: The Lost Magnetic Property (1930-1950 Pole Piece)
« Reply #10 on: June 21, 2011, 11:23:40 PM »
Can't be mu metal.It should not be attracted to magnet.For me it looks like something with high permeability but which forbid closing of field lines around it. Is there a possibility that the effect lies in shape not much in alloy composition ?!

G_Motion

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Re: The Lost Magnetic Property (1930-1950 Pole Piece)
« Reply #11 on: June 22, 2011, 01:14:24 AM »
Oldspeaker.pdf shows it's shape.  I don't think the alloy was highly permeable but it must have been significantly greater than the permeability of air for the speaker to work.  Orthodox magnetic theory says magnetizability equals permeability times a constant, yet a sample of permalloy claimed to be a hundred times more permeable than cold rolled steel has half CRS's attraction.  It makes no sense to me.     

 

Hope

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Re: The Lost Magnetic Property (1930-1950 Pole Piece)
« Reply #12 on: June 22, 2011, 02:59:11 AM »
Babbit like that used in model T motors as bearing material,  perhaps or even more feasible is bismuth.  With a PMH we have magnetized ordinary aluminum, paper, string, wood,  etc.  PMH= permanent magnetic holder.  We simply place the item to be magnetized between the magnet and the bar that is normally used to cover the magnet between uses.

onthecuttingedge2005

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Re: The Lost Magnetic Property (1930-1950 Pole Piece)
« Reply #13 on: June 22, 2011, 05:26:42 AM »
Hi G-Motion.

do you remember what the speaker came out of? some old cars made in that era may still hold them installed, most old car collectors have the old speakers rebuilt to work again.

maybe this direction will give you better luck in finding one, maybe in an old wrecking yard with that vintage of car models still present.

good luck.
Jerry 8)

G_Motion

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Re: The Lost Magnetic Property (1930-1950 Pole Piece)
« Reply #14 on: June 22, 2011, 10:26:32 AM »
Car radios weren't common then and the piece I had didn't come from one. I don't think it came from a floor model, they usually had large speakers with electro magnets, so it must have come from a desk top model.