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 | ||||
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 |
Ni+Cu+Ni | ||||
Zinc | Zn | 8-20 | Bright Blue | Good Against Salt Spray |
C-Zn | 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. |