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Woofer speaker magnets material selection

Woofers speaker are a kind of audio equipment, used to enhance the sound system in the low frequency sound (bass) playback, today courage magnet manufacturers to introduce is how to choose the woofer speaker magnet? With neodymium material or ferrite material?

The choice of magnet material for the subwoofer is usually determined by design objectives and sound quality requirements. When choosing a magnet material, there are two main options: NdFeB (Neodymium iron Boron) and Ferrite (Ferrite). Let me explain to you the characteristics and application of each.

NdFeB magnets:

Ndfeb is a powerful permanent magnet material with excellent magnetic properties, making it suitable for applications requiring high magnetic field strength and compact size.

Due to their high energy density, Ndfeb magnets can provide a more powerful magnetic field in small-size horn designs, resulting in greater sound output and lower distortion.

The price of NdFeb magnets is usually higher, but it is widely used in some professional sound systems requiring high pitched quality.

Ferrite magnets:

Ferrite is a relatively cheap permanent magnet material, with good heat resistance and stability, suitable for some low-end audio systems.

Although ferrites are less magnetic, they can provide enough magnetic field strength to drive a subwoofer in certain low-frequency applications.

The sound output of ferrite magnets may be relatively small, but in some cases they can provide a balanced sound quality performance.

The 10" high power woofer speaker pictured below uses 2 ring ferrite magnets.

high power woofer speaker pictured below uses 2 ring ferrite magnets

Choosing neodymium or ferrite for woofer speaker magnets?

If the horn is portable, the volume and weight also need to be considered, Ndfeb is more dominant.

For cost-sensitive occasions, you can choose more cost-effective ceramic ferrite magnets.

Ferrite has better heat resistance, wide operating temperature range, and is more suitable for high-power long-term drive.

In general, if you are after high sound quality and strong bass output, and the budget allows, Ndfeb magnets may be a better choice. But if the budget is limited, or your application has relatively low sound output and sound quality requirements, ferrite magnets can also be considered.

No matter which magnet material you choose, you need to consider a variety of factors in your design, including the size of the magnet, shape, circuit matching, etc., to ensure the best acoustic performance.

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