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Electromagnetic magnepan equivalent
Electromagnetic magnepan equivalent
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Old 17th July 2012, 03:26 AM   #1
Iamimdoc is offline Iamimdoc
diyAudio Member
Join Date: Aug 2011
Default Electromagnetic magnepan equivalent

Just asking: would it be feasible, has it been tried, etc, etc:

To devise a planar speaker that would use wires carrying current (to function as electromagnmets) to replace the magnets in magneplanars?

I suspect yes and it does not work is answer but thought I would ask


Last edited by Iamimdoc; 17th July 2012 at 06:37 PM.
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Old 18th July 2012, 08:39 PM   #2
Ed Holland is offline Ed Holland  England
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Join Date: Dec 2004
Location: Mountain View, California
I should think it can be done. Years ago in the days of tube/valve radio sets, there were moving coil cone loudspeakers which required DC passing through a field winding to generate the magnetic field. In this case the DC was often the high voltage supply for the circuit, and passing it through coil to magnetise the loudspeaker formed part of the power supply smoothing circuit.

For a planar speaker, you'd need a lot of current in the DC winding, or a large system of pole pieces to enhance/concentrate the B field (just as for any electromagnet). That would probably make it heavy, expensive and impractical. Magnaplanar's approach is quite elegant in comparison - with permanent magnets arrranged in vertical strips, attached to a perforated steel plate.

Of course, I'd love to re-engineer some Maggies with neodymium-iron-boron magnets in place of the originals....

Just my opinion, of course

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Old 18th July 2012, 09:36 PM   #3
geraldfryjr is offline geraldfryjr  United States
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Join Date: Feb 2008
Location: Jackson,michigan
I read a thread discussing this quite a while back.

It is certainly possible but it would be hard to match the performance of using some Neo's, For Sure!!

Not to mention the power used up in the electromagnets.

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