Abstract: The invention provides an ultrathin speaker module, comprising: a casing, which is provided with a sound hole thereon; a speaker unit, which comprises a diaphragm; a first separating wall, which is provided with a diaphragm accommodating hole, wherein the diaphragm of the speaker unit is fixed in the diaphragm accommodating hole, and the first separating wall and the diaphragm separate the internal space of the casing into an upper space and a lower space; and a second separating wall, which separates the upper space into one first upper cavity and at least one second upper cavity, wherein the first upper cavity comprises the diaphragm and forms a front acoustic cavity, and the front acoustic cavity is in communication with the outside through the sound hole on the casing; and the at least one second upper cavity is in communication with the lower space through a through hole on the first separating wall, and forms a rear acoustic cavity.

Abstract: The present invention provides a speaker module comprising a peripheral frame and speaker units housed in the peripheral frame, and the peripheral frame is provided with sound holes in communication with the outside, a front acoustic cavity in communication with the sound holes is defined between one side of the speaker units and the peripheral frame, and a rear acoustic cavity is defined between the peripheral frame and another side of the speaker units away from the front acoustic cavity; in which the speaker units are provided in plurality, and the rear acoustic cavity is divided into the same number of rear sub-cavities as that of the speaker units, and each of the speaker units corresponds to one of the rear sub-cavities and is in communication with its corresponding rear sub-cavity. The above structure makes it easier to adjust the acoustic performance and improves the stereo effect of the product.