| 摘要 |
PURPOSE: A monitor on-board speaker is provided to increase a base regeneration capability by changing a speaker cabinet structure, thereby having an abundant sound and intensifying a base in a narrow speaker device. CONSTITUTION: At least one speaker device(1) is fixed inside a monitor. A speaker(4) is mounted in the front of a cabinet(2). A duct(3) is provided in the backplane of the cabinet to communicate an inner atmosphere and an outer atmosphere of the cabinet. A base inside the cabinet is emitted into the exterior of the cabinet, thereby intensifying the base. The cross section of the duct thereof has a circular shape or an angular shape. The length of the duct is determined according to a base property. Therefore, the speaker device has an abundant sound and allows intensifying a base in a narrow speaker space.
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