Smaller Components and Higher Sound Pressure Level Audio Microspeakers

    Unique audio solutions using Carpenter Electrification's soft magnetic alloys


    Material optimization for increased performance and battery life

    The miniaturization of electronics has created a demand for smaller and higher performing audio microspeakers. Our soft magnetic alloy solutions enable designers to reduce the size and weight of electromagnet components within speakers while also increasing performance. Material optimization leads to increased performance, such as improved sound pressure level (SPL) and improved battery life for wireless audio devices. Carpenter alloys have been used in a variety of micospeaker components, such as voice coils, top and bottom plates, reeds, biasing connectors, and shielding.

    High-Performance Soft Magnetic Alloys for Peak Audio Response

    Hiperco® 27

    Carpenter Technology’s Hiperco 27 alloy provides high magnetic induction along with high thermal conductivity. This alloy is a good choice for speakers.

    High-Performance Soft Magnetic Alloys for Peak Audio Response

    Hiperco® 50

    Our Hiperco alloys provide the highest magnetic induction of any commercially available soft magnetic material while exhibiting high permeability and low core loss.

    These iron-cobalt alloys offer nearly 25% higher induction and 30% lower losses than conventional electrical steel and are available in thicknesses from 0.1 to 0.5mm. Hiperco alloys work as flux concentrators in electromagnetic pole pieces for high flux applications such as audio voice coils.

    High-Performance Soft Magnetic Alloys for Peak Audio Response

    High Permeability 49

    Carpenter High Permeability 49 has very high magnetic permeability, low core losses, and good magnetic induction. It is easy to stamp and form compared to other high permeability soft magnetic alloys. Given the high permeability and good induction, this alloy is frequently used for audio components requiring a combination of sensitivity, fast response, and size reduction.

    High-Performance Soft Magnetic Alloys for Peak Audio Response

    HyMu 80

    Superior permeability and low core loss. An excellent choice for shielding in acoustic devices.


    Learn How to Maximize Microspeaker Performance From Our Soft Magnetic Experts

    Looking for material data sheets or more information on how our soft magnetic materials have improved performance in microspeakers and hearing aids? Visit our resource center to learn more from our experts with webinars, case studies, videos, and more available for download.


    Related Resources

    Browse our knowledge base of technical electrification resources: white papers, brochures, datasheets, webinars, and more.

    Stay in touch

    Sign up for our mailing list!

    Unsubscribe from email communications at any time. Privacy Policy.