Smaller Components and Higher Sound Pressure Level Audio Microspeakers

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.

Microspeakers utilizing Hiperco® soft magnetic alloy solutions are more sound pressure level (SPL) dense and require less current to operate than steel-based magnetic assemblies. Designs with Hiperco can reduce the size and weight of the soft magnet and rare-earth permanent magnet by 30% and 17% respectively while reducing operating current for a 7% increase in battery life.