| 摘要 |
PROBLEM TO BE SOLVED: To attain an improvement in sound quality of a speaker device for vehicle, particularly, the efficient transmission of heavy low sound to a cabin by utilizing the existing equipment of an automobile 1 as it is or only by slightly improving it. SOLUTION: The air duct 4 of a vehicle is used as the enclosure of a speaker SP. Since the air duct 4 of the vehicle is used as the enclosure of the speaker SP, the improvement in sound quality, particularly, the efficient transmission of heavy low sound to the cabin can be attained. Such an improvement in sound quality can be attained by using the existing equipment as it is without being accompanied by the change in structure of the automobile. Accordingly, the improvement in sound quality can be attained without being accompanied by an increase in cost.
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