Loudspeaker box structure
A speaker and cavity technology, applied in the field of speaker equipment, can solve problems such as the lower limit of low frequency, achieve the requirements of reducing the diameter and volume of the box, improve sound quality, and ensure the effect of radiation efficiency
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Embodiment 1
[0023] Such as figure 2 As shown, a speaker structure includes a speaker 1 and a speaker cavity. The speaker 1 is arranged in the speaker cavity. The speaker cavity includes a reverse-phase cavity unit and a normal-phase cavity unit. The reverse-phase cavity unit and the normal-phase cavity unit The speaker 1 is arranged between the anti-phase cavity unit and the normal-phase cavity unit, the anti-phase cavity unit includes at least one anti-phase resonant cavity 2 , and the normal-phase cavity unit includes at least one normal-phase resonant cavity 3 . The normal-phase resonant cavity 3 and the anti-phase resonant cavity 2 are Helmholtz resonant cavities. The normal-phase radiation sound energy of the speaker 1 is resonantly tuned through the normal-phase cavity unit, and output from the normal-phase cavity unit. The lower limit of the frequency of the radiated sound wave is lower than The lower limit of the normal-phase radiated sound wave of the speaker 1; at the same time...
Embodiment 2
[0026] Such as image 3 As shown, the number of the normal-phase resonant cavity 3 of the present embodiment is 1, the number of the anti-phase resonant cavity 2 is 2, the first anti-phase resonant cavity 2 is connected with the normal-phase resonant cavity 3, and the second anti-phase resonant cavity 2 is connected to the first anti-phase resonant cavity 2, an anti-phase channel 21 is provided between the second anti-phase resonant cavity 2 and the first anti-phase resonant cavity 2, and the second anti-phase resonant cavity 2 is provided with an external The connected anti-phase channel 21, the normal-phase resonant cavity 3 is provided with a normal-phase channel 31 connected to the outside, and the normal-phase sound wave generated by the loudspeaker 1 is resonantly tuned by the normal-phase resonant cavity 3 of the positive-phase cavity unit to generate an anti-phase sound wave , the anti-phase sound wave passes through the normal-phase channel 31 of the normal-phase reso...
Embodiment 3
[0028] In the present embodiment 4, the number of anti-phase resonant cavities 2 is 1, and the number of normal-phase resonant cavities 3 is 4. The four normal-phase resonant cavities 3 are connected sequentially, and a positive-phase Channel 31, the normal-phase resonant cavity 3 is provided with a normal-phase channel 31 connected to the outside, and the anti-phase resonant cavity 2 is provided with an anti-phase channel 21 connected to the outside, that is to say, the first normal-phase resonant cavity 3 and the anti-phase resonant The cavity 2 is connected, the loudspeaker 1 is arranged between the first normal-phase resonant cavity 3 and the anti-phase resonant cavity 2, the anti-phase resonant cavity 2 is provided with an anti-phase channel 21 connected with the outside world, the first normal-phase resonant cavity 3 and the The second resonant cavity is connected, a positive phase channel 31 is arranged between the first positive phase resonant cavity 3 and the second re...
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