Reduction of Mid-to-High-Frequency Distortion in Loudspeakers through Structural Magnetic Circuit Modification

Xiao H, Li Z, Yang J. Reduction of Mid-to-High-Frequency Distortion in Loudspeakers through Structural Magnetic Circuit Modification. In: Convention Paper. Audio Engineering Society; 2026. Paper 10273. Available from: https://aes.org/publications/elibrary-page/?id=23214

@inproceedings{Xiao2026_23214,
  author = {Xiao, He and Li, Zhi and Yang, Jianbin},
  title = {{Reduction of Mid-to-High-Frequency Distortion in Loudspeakers through Structural Magnetic Circuit Modification}},
  note = {Paper 10273},
  year = {2026},
  month = may,
  publisher = {Audio Engineering Society},
  url = {https://aes.org/publications/elibrary-page/?id=23214}
}

TY  - CPAPER
TI  - Reduction of Mid-to-High-Frequency Distortion in Loudspeakers through Structural Magnetic Circuit Modification
AU  - Xiao, He
AU  - Li, Zhi
AU  - Yang, Jianbin
M1  - Paper 10273
PY  - 2026
DA  - 2026/05/28
UR  - https://aes.org/publications/elibrary-page/?id=23214
PB  - Audio Engineering Society
LA  - en
AB  - This paper investigates mid-to-high-frequency distortion in traditional electrodynamic loudspeakers arising from current-dependent nonlinearity in the magnetic circuit. Through theoretical analysis, finite-element simulations and experimental validation, the dominant distortion mechanisms are identified. To mitigate distortion while maintaining a stable frequency response, an improved magnetic circuit is proposed, which introduces longitudinal slits to suppress surface-concentrated eddy currents. Experimental results demonstrate that the modified circuit achieves greater distortion reduction compared with conventional designs. As the improvement relies solely on structural modifications without changing the ferromagnetic materials, the proposed design offers a practical and cost-effective solution for engineering applications.
ER  -