Loudspeakers

Application Case

The magnets used in professional loudspeakers are mainly neodymium magnets and ferrite.They exist in the shape of rings or disks of various sizes. Neodymium magnets?is often used in high - and medium-grade products.?Its sound quality, sound elasticity, sound performance, sound field positioning accuracy.With excellent performance, small and light?neodymium magnets?began to replace large and?heavy ferrite gradually.

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Technical Requirement

The Field of Electroacoustic:

1、Characteristic :Br ≥ 13.3KGs,Hcj ≥ 17KOe

2、Coating Sandards:

Coating:Zinc

High temperature ageing: 250'C, no blister , no discoloring.

Sum-10um

Thickness : Sum -10um

Salt spraytest: 35C, 5%NaCl, 48hours

Adhesive force between the coating layer and magnet:

drop test:18m. S0times. coating can't peel off.

Flux loss: 100C "2hours , the rate af fu osss8%

Key Technologles of High- Grade HIF, Notebook andLED TV Speaker Magnet:

1、Charateristics:Br:12.0-13.4KGs,Hcj:14-17KOe

2、Coating Standards :

Coating : Zine

High temperture ageing: 250C, no biste

no discoloring.

Thickness : Sum 10um

Salt spray est: 35C .5%NaCG, 48hours

Adhesive force between the coating layer and magnet:

drop test; 18m. Sotimes. coating can't peel off,

3、Flux oss:80- I00C " 2hous , the rote of flux 0sss8%

4、Tolerance:+/-0.05mm


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