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Old 20th August 2013, 04:34 PM   #21
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In the interim, how about some pix of these magnets and the back side of the speaker where they can be seen??
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Old 20th August 2013, 06:26 PM   #22
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I have already dismantled the speaker.
For those who are afraid to open such a speaker it's a piece of cake really.
I have made a special jig for opening it safely.
The trick for opening (and more importantly, closing!) is to not let the two
parts slide aside.
If it's kept straight with a jig, it's very easy.
I am on vacation at the moment (till the 25th).
I will post pictures of the magnets (close up) / construction/ foil/ damping foams when i return...
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Old 27th August 2013, 09:24 AM   #23
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And here are a couple pics from the opened HE L-EMIM.
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File Type: jpg Photo0261-Optimized.jpg (81.7 KB, 33 views)
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Old 28th August 2013, 02:28 PM   #24
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to my eye, in these images they look ferrite...

you could test a bit by seeing what the magnetic attraction is compared to a neodymium piece, or the repulsion (easier, since nothing gets slammed together).
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Old 28th August 2013, 03:39 PM   #25
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Quote:
Originally Posted by bear View Post
to my eye, in these images they look ferrite...

you could test a bit by seeing what the magnetic attraction is compared to a neodymium piece, or the repulsion (easier, since nothing gets slammed together).


Another means would be to measure a single one. Most smartphones have a 3 axis hall sensors into them and use an app like Androsensor to measure.
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Old 28th August 2013, 04:06 PM   #26
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You mean that i can actually measure the intensity of the magnetic field with an android phone?
That would be a lifesaver!
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Old 28th August 2013, 04:17 PM   #27
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