Advancements toward a high-power, carbon nanotube, thin-film loudspeaker
Document Type
Article
Publication Date
9-1-2014
Abstract
© 2014 Institute of Noise Control Engineering. The carbon nanotube (CNT) thermophone has been explored as a novel loudspeaker. Potential advantages of this technology in the audio industry include ultra-lightweight, low production cost, compact size, and independence from rare-earth materials. In this paper, progress toward a practical CNT loudspeaker is presented. Large, high quality CNT thin-film assemblies are designed and built. Design guidance for these types of assemblies is provided. Maximum sound output level, total harmonic distortion, and power efficiency tests are performed. A maximum source level of 111 dBA at 1 m is achieved at 2 kHz with the new sources. The main hurdle to this technology remains power efficiency. Several paths forward are discussed as this technology continues to advance to a position where it may be able to compete with current state-of-the-art, moving-coil loudspeakers.
Publication Title
Noise Control Engineering Journal
Recommended Citation
Barnard, A.,
Brungart, T.,
McDevitt, T.,
Aliev, A.,
Jenkins, D.,
Kline, B.,
&
Baughman, R.
(2014).
Advancements toward a high-power, carbon nanotube, thin-film loudspeaker.
Noise Control Engineering Journal,
62(5), 360-367.
http://doi.org/10.3397/1/376235
Retrieved from: https://digitalcommons.mtu.edu/michigantech-p/14118