MEMS tweeter speaker requires no 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.
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