| 摘要 |
The invention relates to a vehicle door with a wall (6, 13, 14, 15) having a loudspeaker (4). The invention aims at economically improving reproduction of low frequencies in a motor vehicle without requiring to mount additional speakers (4) while preserving the separation between the wet are and the dry areas or reducing the size of the loudspeaker while ensuring that the quality of the sound remains the same. This is achieved in that at least one passive membrane (8) is provided in a wall (6, 13, 14, 15) at a point distant from the loudspeaker (4), said membrane separating the area to be exposed to the sound, more particularly, the passenger compartment of the vehicle, from the back area (10) allocated to the back part of the loudspeaker (4).
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