Abstract: Provided in the present invention is a stereo sound box, including: a box body. Two sets of sound generating units are provided on a surface of the box body, correspondingly for a left sound channel and a right sound channel. Each set of sound generating units includes a low sound unit and at least one high sound unit. The low sound units of the two sets of sound generating units are arranged to mirror each other so as to neutralize the inertia of vibrations. The high sound units are arranged outside each low sound unit. In the described stereo sound box, high-fidelity low sound can be maintained even while the box body is kept light.

Abstract: This invention discloses a kind of speaker structure with a loading hole. A characteristic is that it includes an active cavity that has a cone hole and a loading hole; a loudspeaker is sealed and secured on the said cone hole; the said active cavity is connected to the outside air through the said loading hole; the cone of the said loudspeaker has one side which is connected to the free space; another characteristic of this invention is that it includes a driven cavity that is connected to the said active cavity through the said loading hole; the cross-sectional area of the said loading hole is smaller than the cross-sectional area of the air passage on its either side; further, it is not larger than ? the effective area of all the vibration units in the said active cavity; also, the volume of the said active cavity does not exceed half the total volume of the said active cavity and driven cavity. The loading hole constitutes a loading component which improves the transient response of the speaker body.