3-D Loud-Speaker Systems for Automotive Use

3-D Loud-Speaker Systems for Automotive Use

In order to reproduce heavy bass with a small diameter loudspeaker for automotive use similar to the intensity and low distortion of a home-use Hi-Fi system, a large volume velocity must be obtained. This is done by lowering the minimum resonant frequency of system and by linearly expanding the ampl...

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Bibliographic Details
Published in:SAE transactions Vol. 94; pp. 976 - 985
Main Authors: Hasegawa, M., Takewa, H., Kimura, Y., Okada, A.
Format: Journal Article
Language:English
Published: Society of Automotive Engineers, Inc 01-01-1985
Subjects:
Audio frequencies
Frequency ranges
Loudspeakers
Low frequencies
Pension plans
Resonant frequencies
Sound pressure
Sound transmission
Suspension systems
Vibration
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Summary:In order to reproduce heavy bass with a small diameter loudspeaker for automotive use similar to the intensity and low distortion of a home-use Hi-Fi system, a large volume velocity must be obtained. This is done by lowering the minimum resonant frequency of system and by linearly expanding the amplitude range of diaphragm. We have developed a 3-D woofer system using a centering suspension that consists of four tubes of square cross-section continuously laid in the circumferential direction and a cone suspension that has V-shaped pleats in both of the circumferential and diameter directions for the vibration system. The results are good acoustic characteristics in an automotive cabin that are low in distortion with high output in the low frequency range up to 100Hz.
ISSN:0096-736X
2577-1531