Neodymium Speaker Magnet

Size: 33x24x15cm or customized
Shape: Ring
Coating: Nickel,Copper,Gold,Silver,Zinc
Composite: Neodymium Magnet
Magnetic Properties: 80°C-200°C
Grade: N35-N52,N35M-N52M,N35H-N52H
Tolerance: ±10%, 0.05mm ~ 0.1mm
Magnetization Direction: Axial/Radial/Multi-Poles Magnetization
Material: Neodymium Magnet
Trademark: Actility
Transport Package: Carton
Specification: Customised
HS Code: 8505111000
Supply Ability: 1000000 Piece/Pieces per Month

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PRODUCT DETAIL

Size: 33x24x15cm or customized
Shape: Ring
Coating: Nickel,Copper,Gold,Silver,Zinc
Composite: Neodymium Magnet
Magnetic Properties: 80°C-200°C
Grade: N35-N52,N35M-N52M,N35H-N52H
Tolerance: ±10%, 0.05mm ~ 0.1mm
Magnetization Direction: Axial/Radial/Multi-Poles Magnetization
Material: Neodymium Magnet
Trademark: Actility
Transport Package: Carton
Specification: Customised
HS Code: 8505111000
Supply Ability: 1000000 Piece/Pieces per Month

Speaker magnets refer to the magnet used in the horn, that is, the magnet used in the horn.

Several factors should be considered when selecting speaker magnet

First of all, it is necessary to determine the ambient temperature in which the horn works, and which magnet should be selected according to the temperature. Different magnets have different temperature resistance characteristics and can support different maximum operating temperature. When the working environment temperature of the magnet exceeds the maximum working temperature, magnetic attenuation and demagnetization may occur, which will directly affect the sound production effect of the horn.
Secondly, the horn magnet should be selected by considering the magnetic flux demand and the magnet volume. The louder the speaker is, the better the sound is? In fact, the bigger the magnet, the better. From the influence of the magnet performance on the sound output quality of the loudspeaker, we can find that the magnetic flux of the magnet has a great influence on the sound quality of the horn. Under the same volume, the magnet performance is: NdFeB > alnico > ferrite; under the same magnetic flux requirement, the volume of NdFeB magnet is the smallest and the ferrite is the largest. For the same magnetic material (the same material and same performance), the larger the diameter and the greater the magnetic induction, the greater the power of the horn is, the higher the sensitivity of the horn is, and the better the transient response is. Therefore, it is necessary to determine which kind of magnetic material to choose by considering the limitation of horn volume to magnet volume and the requirements of magnetic flux performance.

Add: some people ask how many cores and how much magnetism does the horn mean?
When we say how much magnetism the horn has, we mean the diameter of the magnet in the horn. For example, 100 magnetism means that the diameter of the magnet is 100 mm. The number of cores refers to the diameter of the voice coil. For example, 100 cores means that the diameter of the voice coil is 100 mm.

China Speaker Magnets Manufacturer www.rizinia.com supplies speaker magnets, loundspeaker permanent magnets, neodymium or ndfeb speaker magnets, ceramic / ferrite speaker magnets, headphone magnets, telephone magnets, megaphone magnets, audio, television and monitor speaker magnets for horn, in kinds of materials such as NdFeB/NIB/neodymium iron boron, etc.

This product is not a toy and is not to be used by children. This product is to be used for scientific experiments or for industrial applications. This product contains strong Neodymium magnet(s) that can be harmful or fatal if swallowed. Strong Neodymium magnets are fragile, they are brittle and will break or chip if they hit a hard surface or are snagged together. Always use the utmost care when handling Neodymium magnets.

Working Temperature	Grade	Max. Operating Temperature
	N35-N52	80°C (176°F)
	33M- 48M	100°C (212°F)
	33H-48H	120°C (248°F)
	30SH-45SH	150°C (302°F)
	30UH-40UH	180°C (356°F)
	28EH-38EH	200°C (392°F)
	28AH-35AH	220°C (428°F)

Typical Magnetic Properties of Neodymium Speaker Magnet

Grade	Br		Hcb		Hcj		(BH)max		Working Temp
Grade	mT	Gs	kA/m	Oe	kA/m	Oe	kJ/m3	MGOe	ºC
N35	1180-1230	11800-12300	≥868	≥10900	≥955	≥12000	263-287	33-36	≤80
N38	1220-1280	12200-12800	≥899	≥11300	≥955	≥12000	287-310	36-39
N40	1260-1310	12600-13100	≥923	≥11600	≥955	≥12000	302-326	38-41
N42	1280-1340	12800-13400	≥923	≥11600	≥955	≥12000	318-342	40-43
N45	1320-1370	13200-13700	≥876	≥11000	≥955	≥12000	342-366	43-46
N48	1360-1420	13600-14200	≥836	≥10500	≥876	≥11000	358-390	45-48
N50	1390-1450	13900-14500	≥836	≥10500	≥876	≥11000	374-406	47-51
N52	1420-1480	14200-14800	≥796	≥10000	≥876	≥11000	390-422	49-53
N35M	1180-1230	11800-12300	≥868	≥10900	≥1114	≥14000	263-287	33-36	≤100
N38M	1220-1280	12200-12800	≥899	≥11300	≥1114	≥14000	287-310	36-39
N40M	1260-1310	12600-13100	≥923	≥11600	≥1114	≥14000	302-326	38-41
N42M	1280-1340	12800-13400	≥923	≥11600	≥1114	≥14000	318-342	40-43
N45M	1340-1390	13400-13900	≥876	≥11000	≥1114	≥14000	342-366	43-46
N48M	1360-1420	13600-14200	≥876	≥11000	≥1114	≥14000	366-390	46-49
N35H	1180-1230	11800-12300	≥868	≥10900	≥1353	≥17000	263-287	33-36	≤120
N38H	1220-1280	12200-12800	≥899	≥11300	≥1353	≥17000	287-310	36-39
N40H	1260-1310	12600-13100	≥923	≥11600	≥1353	≥17000	302-326	38-41
N42H	1280-1340	12800-13400	≥923	≥11600	≥1353	≥17000	318-342	40-43
N45H	1330-1390	13300-13900	≥923	≥11600	≥1353	≥17000	342-366	43-46
N48H	1360-1420	13600-14200	≥923	≥11600	≥1274	≥16000	366-390	46-49
N33SH	1140-1190	11400-11900	≥836	≥10500	≥1592	≥20000	247-270	31-34	≤150
N35SH	1180-1230	11800-12300	≥868	≥10900	≥1592	≥20000	263-287	33-36
N38SH	1220-1280	12200-12800	≥899	≥11300	≥1592	≥20000	287-310	36-39
N40SH	1260-1310	12600-13100	≥923	≥11600	≥1592	≥20000	302-326	38-41
N42SH	1280-1340	12800-13400	≥923	≥11600	≥1592	≥20000	318-342	40-43
N45SH	1330-1390	13300-13900	≥923	≥11600	≥1592	≥20000	342-366	43-46
N28UH	1030-1090	10300-10900	≥780	≥9800	≥1990	≥25000	207-231	26-29	≤180
N30UH	1090-1140	10900-11400	≥812	≥10200	≥1990	≥25000	223-247	28-31
N33UH	1130-1170	11300-11700	≥852	≥10700	≥1990	≥25000	247-263	31-33
N35UH	1180-1220	11800-12200	≥868	≥10900	≥1990	≥25000	263-287	33-36
N38UH	1220-1270	12200-12700	≥899	≥11300	≥1990	≥25000	287-310	36-39
N28EH	1030-1090	10300-10900	≥780	≥9800	≥2388	≥30000	207-231	26-29	≤200
N30EH	1080-1130	10800-11300	≥812	≥10200	≥2388	≥30000	223-247	28-31
N33EH	1130-1170	11300-11700	≥852	≥10700	≥2388	≥30000	247-263	31-33
N35EH	1180-1220	11800-12200	≥868	≥10900	≥2388	≥30000	263-287	33-36

Coatings of Rare Earth Magnets
Surface	Coating	Thickness (Microns)	Color	Resistance
Passivation		1	Silver Grey	Temporary Protection
Nickel	Ni+Ni	10-20	Bright Silver	Excellent against Humidity
Nickel	Ni+Cu+Ni	10-20	Bright Silver	Excellent against Humidity
Zinc	Zn	8-20	Bright Blue	Good Against Salt Spray
Zinc	C-Zn	8-20	Shinny Color	Excellent Against Salt Spray
Tin	Ni+Cu+Sn	15-20	Silver	Superior Against Humidity
Gold	Ni+Cu+Au	10-20	Gold	Superior Against Humidity
Copper	Ni+Cu	10-20	Gold	Temporary Protection
Epoxy	Epoxy	15-25	Black, Red, Grey	Excellent Against Humidity & Salt Spray
	Ni+Cu+Epoxy
	Zn+Epoxy
Chemical	Ni	10-20	Silver Grey	Excellent Against Humidity
Parylene	Parylene	5-20	Grey	Excellent Against Humidity, Salt Spray. Superior Against Solvents, Gases, Fungi and Bacteria.