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ERIC Number: EJ860650
Record Type: Journal
Publication Date: 2009-May
Pages: 13
Abstractor: As Provided
Reference Count: 16
ISBN: N/A
ISSN: ISSN-0143-0807
Experiments with a Loudspeaker
Kraftmakher, Yaakov
European Journal of Physics, v30 n3 p567-579 May 2009
A common moving-coil loudspeaker is useful for learning harmonic motion. A simple optical method is used to observe free and forced oscillations of the diaphragm of a loudspeaker. With a lock-in amplifier and data-acquisition system, the frequency response of the loudspeaker and its electrical impedance are automatically recorded versus frequency. From the measurements, it is easy to calculate electrical and mechanical parameters of the loudspeaker. (Contains 2 footnotes and 9 figures.)
Institute of Physics Publishing. The Public Ledger Building Suite 929, 150 South Independence Mall West, Philadelphia, PA 19106. Tel: 215-627-0880; Fax: 215-627-0879; e-mail: info@ioppubusa.com; Web site: http://www.iop.org/EJ/journal/EJP
Publication Type: Journal Articles; Reports - Research
Education Level: Higher Education
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A