Work

A novel dual-coil microspeaker design for enhanced low-frequency sound pressure level in tablets

Year: 2026

Type: article

Abstract: This study proposes a novel nested dual-coil structure to address the challenge of delivering powerful low-frequency outputs from microspeakers under the strict thickness constraints of modern smart devices. The design was validated through electromagnetic–mechanical–acoustic coupled analyses and experimental measurements of the fabricated samples. Compared to a conventional single-coil structure, the proposed design improves the force factor by 34.13%, resulting in a 3.03 dB increase in the sound pressure level in the 100–500 Hz band, with a 0.63 dB trade-off in the 2–10 k Hz band. These results demonstrate the effectiveness of the design for improving bass performance under strict thickness constraints.

Source: AIP Advances

DOI: 10.1063/9.0000963

Authors: Ji-Hun Park, Young-Hun Jeong, Dan-Ping Xu, Sang-Moon Hwang

Institutions: Pusan National University, Shanghai University

Language: English

Topic: Acoustic Wave Phenomena Research

Subfield: Biomedical Engineering

Field: Engineering

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $1,350

Funder: Pusan National University