MEMS tweeter speaker without piezoelectric amplifier

xMEMS Labs Inc. (Santa Clara, Calif.) has introduced Lassen, a silicon MEMS tweeter speaker for earbuds that does not require a dedicated amplifier. By eliminating the need for a piezoelectric amplifier xMEMS claims it is reducing cost, component area and power consumption for wireless earbuds.

The xMEMS Lassen micro-speaker delivers up to 115dB SPL in the 6kHz to 20kHz frequency range from a standard 1Vrms audio output, without the need of additional amplification, delivering sound quality that exceeds that of legacy tweeter speaker technologies. The package measures 3.2mm by 5mm by 1.15mm.

The previous xMEMS Cowell and Muir MEMS speaker solutions for two-way earbuds required a separate piezo amplifier chip. Manufacturers such as Creative Labs and Soundbeats embraced this integration requirement because the solid-state xMEMS drivers produced unparalleled sound reproduction quality and detail.

Removing the need for a dedicated amplifier reduces the cost of tweeter integration by about 25 percent xMEMS states.

Samples of the xMEMS Lassen TWS Tweeter are available now, with mass production scheduled for September 2025.

The introduction of the xMEMS Lassen silicon MEMS tweeter speaker marks a significant advancement in the field of earbud technology. With its innovative design that eliminates the need for a dedicated amplifier, xMEMS has not only reduced costs but also improved efficiency and performance. This breakthrough is set to revolutionize the way wireless earbuds are designed and manufactured, offering users a superior audio experience.

One of the key features of the xMEMS Lassen micro-speaker is its ability to deliver up to 115dB SPL in the 6kHz to 20kHz frequency range without requiring additional amplification. This results in exceptional sound quality that surpasses traditional tweeter speaker technologies. Furthermore, the compact package size of 3.2mm by 5mm by 1.15mm makes it ideal for integration into earbuds without adding bulk or weight.

Prior to the introduction of the xMEMS Lassen, earbud manufacturers had to rely on separate piezo amplifier chips for their MEMS speaker solutions. While this approach yielded high-quality sound reproduction, it also added complexity and cost to the manufacturing process. By streamlining the design and eliminating the need for a dedicated amplifier, xMEMS has simplified the integration of tweeter speakers into earbuds.

Not only does the xMEMS Lassen offer superior sound quality and efficiency, but it also presents a cost-effective solution for earbud manufacturers. By reducing the cost of tweeter integration by approximately 25 percent, xMEMS is making high-quality audio more accessible to a wider range of consumers. This affordability, combined with the exceptional performance of the Lassen tweeter, is sure to make it a popular choice among earbud manufacturers and users alike.

With samples of the xMEMS Lassen TWS Tweeter already available and mass production scheduled to begin in September 2025, the future of earbud technology looks promising. As more manufacturers adopt this innovative silicon MEMS tweeter speaker, consumers can look forward to a new era of wireless audio experiences that are both immersive and affordable.