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||China Magnet Source Material Limited
||308,Tower B,Qiongzhu Garden , Huawang Rd, Dalang street, Longhua District, Shenzhen,China.
||Shen Zhen 518109
||(86) 755 28174720
||(86) 95040 - 100263 542539
||8/9/14 9:09 GMT
neodymium Magnets for Loudspeaker
neodymium Magnets for Loudspeaker - sales(at)china-magnets-source-
The magnets in the loudspeaker create magnetic field and help to convert
electricity into sound waves. There are three types of magnets used in
loudspeakers: ferrite, AlNiCo and NdFeB. The most common one is ferrite magnet,
lower in cost but heavy and low magnetic force. Neodymium magnet is the most
powerful permanent magnet and weighs a lot less than ferrite magnet and can be
used in small product. Therefore it is the critical material of High-end
electro-acoustic products where lower reducing weight is always a goal.
When you need loudspeaker to work on special environment, there are several
temperatures series for neodymium magnet which you can choose, e.g. N (80℃), M
(100℃), H (120℃), SH (150℃), UH (180℃), EH (200℃); under each temperature,
there are different grades based on magnetic force, e.g. N38, N40, N45 etc.
AlNiCo is in the middle about magnetic force among three type material magnets.
It can work on 300℃ high temperature and tend to last longer, but much
When refer to 100mm loudspeaker, we mean the diameter of ring magnet in the
speaker is 100mm. According to the different magnet specification, it is not
right that the bigger magnet, the better loudspeaker. Although the material and
size of magnet in loudspeaker are the same, you may get products with different
sound quality. About this, you need to know magnetization level. Try to keep
every magnet has been full charged. Sintered ndfeb magnet is always plated to
avoid oxidation. The thickness of coating will affect magnetization. So
loudspeaker magnet usually uses Zn coated or thin Ni coated.
If you need more infomation, please contact sales(at)china-magnets-source-
Minimum Order: 10 pieces
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