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For Loudspeaker, Automotive & Miniature Audio OEMs

Speaker Magnets Manufacturer

GX Magnet supplies ferrite and neodymium speaker magnets for loudspeaker and audio OEM projects. From ferrite rings for woofers and subwoofers to compact NdFeB components, we match material, geometry, magnetization and surface protection to your speaker magnetic circuit, assembly requirements and operating conditions.

Ferrite ring and neodymium magnet components for speaker magnetic circuits

Speaker Magnet Applications by Driver & Audio System

Start with the speaker layout, magnetic target and available installation space. GX reviews ferrite speaker magnets, neodymium speaker magnets and drawing-defined shapes for woofers, tweeters and miniature transducers. Material and geometry depend on the magnetic circuit, temperature and assembly requirements.

Home audio speakers and subwoofers with ferrite ring magnet components

Home Audio & Subwoofer Magnets

  • Ferrite ring magnets suit many woofers and subwoofers where the enclosure allows a larger magnetic circuit and magnet material cost is a priority.
  • Define ring OD, ID, thickness, bonding faces and the required air-gap field. Review neodymium where depth or weight is constrained.


    Typical End-Use Applications: Hi-fi loudspeakers, home subwoofers, bookshelf speakers, floor-standing speakers.
Professional loudspeakers with ferrite and neodymium ring magnet components

Professional Loudspeaker Magnets

  • Ferrite and neodymium magnets both serve professional loudspeaker designs. Portable systems may prioritize lower weight, while fixed installations can allow larger ferrite circuits.
  • Review magnetic output, driver weight, sustained temperature and the dimensions of the pole-piece assembly.


    Typical End-Use Applications: PA loudspeakers, stage monitors, line-array systems, compression drivers.
Automotive speakers with ring magnets for car audio systems

Automotive Speaker Magnets

  • Car speaker magnets balance installation depth, system weight and the available magnetic volume. Ferrite and NdFeB options require circuit-specific selection.
  • Specify magnet temperature, humidity exposure, corrosion protection and the clearance available inside the door or dashboard.

    Typical End-Use Applications: Car door speakers, dashboard tweeters, automotive subwoofers, headrest speakers.
TV, soundbar and compact speaker applications with neodymium magnet components

TV, Soundbar & Compact Speakers Magnets

  • Neodymium speaker magnets can reduce magnet volume in shallow or compact transducers. Useful magnetic output still depends on the complete pole-piece and air-gap geometry.
  • Define the component envelope, coating allowance, magnetization direction and assembly clearance for each miniature driver.

    Typical End-Use Applications: Flat-panel televisions, soundbars, portable audio systems, desktop speakers.
Headphone and miniature speaker applications with compact neodymium magnets

Headphone & Miniature Speaker Magnets

  • Small neodymium magnets are used in compact dynamic headphone drivers and miniature speakers. Ring or disc geometry follows the individual transducer design.
  • Review small-part dimensions, polarity, coating condition and handling cleanliness before approving samples.


    Typical End-Use Applications: Over-ear headphones, on-ear headphones, in-ear earphones, miniature audio transducers.
Guitar and bass loudspeaker applications with speaker magnet components

Guitar & Bass Speaker Magnets

  • Ferrite and neodymium offer different weight and magnetic-circuit choices for instrument speakers. Magnet material alone does not define the final tone or acoustic response.
  • Compare circuit geometry, thermal conditions, magnet mass and the complete driver response when selecting or changing material.



    Typical End-Use Applications: Guitar cabinets, bass cabinets, combo amplifiers, portable instrument amplifiers.

Why Speaker Design Teams Choose GX Magnet
for Ferrite & Neodymium Magnets

Ferrite manufacturing, drawing-based magnet supply and inspection records aligned with the speaker component requirements.

Ferrite magnet production equipment for pressing, sintering and grinding
FERRITE MAGNET MANUFACTURING

Manufacturing Control & Lot Traceability

GX manufactures ferrite components and supplies NdFeB magnets to agreed drawings. Material grade, critical dimensions, magnetization and surface condition are reviewed before sample approval and recurring production.

GX operates ISO 9001 and IATF 16949 quality systems. Inspection plans, lot identification and customer-specific records are agreed according to the magnet drawing and supply scope.
  • Ferrite production: powder preparation, pressing, sintering and finishing support drawing-defined ring, block and other magnet geometries.
  • Magnetic verification: polarity, flux or field distribution are checked under the agreed fixture, position and temperature conditions.
  • Component control: critical dimensions, flatness, edge condition and bonding surfaces are included in the approved inspection plan.
Equipment used in neodymium magnet manufacturing
NEODYMIUM MAGNET MANUFACTURING
GX Magnet cartons, inspection report, protective packaging and palletized shipments
GX Magnet labeled cartons, magnetic test report, protective packaging and palletized shipments for pre-shipment checks
Speaker magnet rings and discs for material and geometry selection

Match Material & Geometry to the Speaker Circuit

1Ferrite Rings & Available Magnet Volume

Ferrite speaker magnets suit many conventional woofer circuits where installation space allows a larger ring. Specify ring OD, ID, thickness and the steel interfaces; the useful field depends on the complete magnetic circuit.

2Neodymium Magnets & Compact Driver Layouts

Neodymium speaker magnets provide higher magnetic energy density for compact or lightweight layouts. Compare grades against the required field, actual magnet temperature and demagnetizing conditions. Review coating and bonding compatibility together.

3Magnetization, Bonding & Pole-Piece Interfaces

Define the magnetization direction, polarity, bonding face and delivery state. Axially magnetized rings are common in moving-coil circuits, but the direction must follow the drawing; it is distinct from the radial field within the voice-coil gap.

Speaker Magnet Specification Guide

Use the magnet drawing, speaker circuit and operating conditions to define requirements. Final grades, dimensions, tolerances and magnetic acceptance limits are confirmed for each design.

Magnetic Materials Sintered hard ferrite or sintered NdFeB, selected against magnet volume, required magnetic output, temperature and cost.
Magnet Geometry Rings, discs, blocks or drawing-defined shapes. Identify OD, ID, thickness, active surfaces and edge details.
Speaker Magnetic Circuit Woofer, tweeter, compression driver or miniature transducer layout. Provide the relevant pole-piece geometry and working air gap.
Steel & Assembly Interfaces Define mating diameters, locating faces, bonding surfaces and steel clearances. State whether the request covers the magnet component only.
Magnetization & Polarity Direction, pole identification and magnetized or unmagnetized delivery state. Confirm orientation on the component drawing.
Dimensions & Mechanical Fit Critical fits, thickness, flatness, parallelism and permissible edge chips. Define inspection datums and coating allowance.
Magnetic Acceptance Separate material Br and Hcj from finished-part flux or field checks. Specify the fixture, probe location and measurement temperature.
Temperature & Environment Continuous and peak magnet temperature, exposure duration, thermal cycling, humidity and corrosion conditions.
Air-Gap Field & Force Factor Air-gap flux density requires the intended magnetic circuit. Force factor also depends on voice-coil geometry and position; it is not a bare-magnet specification.
Protection & Bonding Specify NdFeB coating where required, surface preparation, adhesive compatibility and assembly cleanliness.
Sample & Quality Documents Drawing revision, first-article dimensions and magnetic results. Agree lot identification, inspection records and change-control requirements.
Quotation Inputs Magnet drawing, speaker application, material or magnetic target, operating conditions, sample quantity and annual demand.

What Changes the Useful Field at the Voice Coil?

Evaluate the magnet within its intended magnetic circuit and operating temperature. Magnet size or material grade alone does not define the finished speaker output.

Air Gap & Pole-Piece Geometry

Gap width, steel geometry, concentricity and magnet dimensions affect the field where the voice coil moves. Use the actual circuit and assembly datums when evaluating a change in magnet material or size.

Temperature & Magnetic Stability

Review grade selection and demagnetization margin at the magnet’s operating point. Voice-coil heating and power compression are separate effects from permanent-magnet demagnetization.

Polarity & Measurement Conditions

Agree polarity, magnetization direction and the magnetic acceptance method. Compare surface or air-gap measurements only under the same fixture, probe position and temperature conditions.

From Drawing Review
to Sample Approval

Send the magnet drawing together with the speaker layout, magnetic target and operating conditions. GX reviews geometry, material, magnetization and bonding interfaces, then agrees the sample quantity, tooling scope and inspection criteria before sample production.

Speaker magnetic circuit, magnet drawing and ring magnet for engineering review

Inspection & Batch Release

The inspection plan defines dimensional and magnetic acceptance limits for each magnet. Measurement conditions, surface checks and lot records are established before production. Validate approved samples in the intended driver to relate component results to acoustic performance.

Dimensions, Runout & Assembly Fit
Magnetic Output, Polarity & Pole Position
First-Article Inspection & Lot Records
TV and soundbar speaker applications with disc and ring magnet components

One Speaker Circuit, Multiple Design Variables

1Ferrite Rings in a Conventional Woofer

The speaker illustration shows a conventional woofer together with a ferrite ring. Ring dimensions, pole-piece geometry and the voice-coil gap must be considered together. A larger speaker magnet does not by itself guarantee higher sensitivity, deeper bass or better sound.

2Compare Ferrite & Neodymium for Each Application

Home and fixed-installation speakers may allow larger ferrite circuits, while portable and miniature drivers may benefit from neodymium’s higher energy density. Review weight, available depth, temperature and cost; the same-size material substitution may require a circuit redesign.

Request Samples & a Speaker Magnet Quote

Share your magnet drawing, speaker application, magnetic target, operating conditions and annual demand. GX Magnet will review ferrite or neodymium options, geometry, magnetization, protection and sample requirements for your project.

Speaker Magnet Technical FAQs

Answers on speaker magnet materials, magnetic strength, geometry, material comparison and OEM sampling requirements.

What are speaker magnets made of?
Common speaker magnet materials include hard ferrite, also called ceramic, and neodymium iron boron (NdFeB). Alnico is also used in some instrument speakers. This page focuses on ferrite and NdFeB components; select a grade against the actual circuit, temperature and geometry.
Why do speakers have magnets?
In a moving-coil speaker, the permanent magnet establishes a static field in the voice-coil gap. Current through the coil interacts with that field to produce force, moving the diaphragm and generating sound.
How do speakers use magnets to produce sound?
The signal current changes direction in the voice coil. Its interaction with the permanent magnetic field drives the coil and attached diaphragm back and forth. Gap geometry, field distribution and the rest of the driver affect the resulting performance.
Ferrite vs neodymium speaker magnets: which should I choose?
Choose ferrite when the circuit allows sufficient magnet volume and material cost is a priority. Evaluate neodymium when package size or weight is constrained. Compare complete circuits at the intended temperature; a material substitution usually requires a geometry review.
Does speaker magnet size matter?
Yes, but size alone does not predict loudness, bass output or sound quality. Magnet grade, pole pieces, air-gap dimensions and voice-coil geometry all affect the useful field and force factor. A smaller neodymium magnet can serve a different circuit from a larger ferrite ring.
How is speaker magnet strength specified?
Separate material properties such as remanence (Br) and intrinsic coercivity (Hcj) from a finished-part measurement. Specify the probe position and fixture for surface flux density. Air-gap flux density and force factor require the relevant magnetic circuit or complete driver conditions.
What should I send for a speaker magnet quotation?
Send the component drawing, quantity, material or performance target, magnetization direction, temperature and environment. Include critical tolerances, coating requirements, required delivery state and magnetic inspection conditions. Sample quantity and recurring demand help define the quotation scope.
How should speaker magnet samples be approved?
Agree dimensional and magnetic acceptance criteria before sampling. Check grade documentation, critical dimensions, flatness, polarity and coating where applicable. Validate the samples in your own magnetic circuit and driver; component inspection alone does not establish acoustic performance.

Explore Related Magnets & Components

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Magnet rings, blocks and discs for speaker component selection

Sintered Neodymium Magnets

NdFeB components selected by grade, geometry, temperature and surface protection.
Ring magnets with through holes and countersunk holes

Neodymium Ring Magnets

Ring geometry, bore clearance, magnetization and coating requirements.
Disc magnet components for speaker material selection

Neodymium Disc Magnets

Compact disc shapes with drawing-defined diameter, thickness and polarity.
Magnet manufacturing and inspection for drawing-defined components

Custom Ferrite Magnets

Drawing-based ferrite shapes with material and inspection requirements agreed for the project.
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