A speaker device includes a first cabinet, a speaker unit, a second cabinet and a tube cabinet. The first cabinet is disposed in a casing and with a first chamber formed therein. The speaker unit is disposed in the first chamber. The second cabinet is connected to the casing and with an opening formed on the casing. The second cabinet has a second chamber formed therein and communicating with the opening. The tube cabinet connects the first cabinet and the second cabinet. The tube cabinet has a tube chamber formed therein and communicating with the first chamber and the second chamber. A sound generated by the speaker unit is enhanced in the first chamber, transmitted to the second chamber via the tube chamber and emitted out via the opening.

The present disclosure relates to a waterproof open earphone. The waterproof open earphone may include a housing, at least one button, at least one elastic pad, and at least one pair of speaker units. The housing may be placed on a head or at least one ear of a user while not blocking an ear canal of the user. The at least one button may be set on the housing, wherein each of the at least one button corresponds to a button hole. The at least one elastic pad may correspond to the at least one button, respectively, wherein each elastic pad prevents the corresponding button from moving relative to the button hole. Each pair of the at least one pair of speaker units may generate sound within a frequency range from two sound guiding holes through two sound guiding tubes.

The present disclosure discloses an acoustic output apparatus. The acoustic output apparatus may include an acoustic driver. The acoustic driver may include a diaphragm and a magnetic circuit structure. A front side of the acoustic driver may be formed at a side of the diaphragm away from the magnetic circuit structure. A rear side of the acoustic driver may be formed at a side of the magnetic circuit structure away from the diaphragm. The diaphragm may vibrate to cause the acoustic driver to radiate sound outward from the front side and the rear side of the acoustic driver. The acoustic output apparatus may further include a housing structure configured to carry the acoustic driver. One side of the front side and the rear side of the acoustic driver may form a cavity with the housing structure. The side of the acoustic driver forming the cavity may radiate the sound towards the cavity, and the other side of the acoustic driver may radiate the sound towards outside of the acoustic output apparatus.

An acoustic enclosure includes a housing at least partially defining an acoustic chamber for an acoustic radiator. The housing further defines an acoustic opening from the acoustic chamber to a surrounding environment. The acoustic enclosure also has a first acoustic resonator and a second acoustic resonator. The first acoustic resonator and the second acoustic resonator are acoustically coupled with the acoustic chamber in parallel relative to each other. Each of the first acoustic resonator and the second acoustic resonator modifies a frequency response of the acoustic chamber. Loudspeakers can include such an enclosure acoustically excited or driven by an electro-acoustic transducer. As well, an electronic device can include such a loudspeaker.

The present disclosure provides a loudspeaker module and relates to the technical field of electroacoustic products. The loudspeaker module composes a housing, a loudspeaker unit being received in the housing, the loudspeaker unit is electrically connected with a module external circuit via a cable, an end of the cable located in the interior of the module is electrically connected with the loudspeaker unit, an end of the cable located external to the module is electrically connected with the module external circuit a positioning slot is disposed at a position on the housing corresponding to the cable in the interior of the module, the cable is restricted in the positioning slot, a hot melt line is disposed on each of end faces of sidewalls on both sides of the positioning slot, and the hot melt lines, after being hot molten, encapsulate the cable in the positioning slot.

The present disclosure relates to an acoustic output device. The acoustic output device may include an earphone core, a controller, a power source, and a flexible circuit board. The earphone core may include at least one low-frequency acoustic driver configured to output sounds from at least two first guiding holes and the at least one high-frequency acoustic driver configured to output sounds from at least two second guiding holes. The controller may be configured to direct the at least one low-frequency acoustic driver to output the sounds in a first frequency range and direct the at least one high-frequency acoustic driver to output the sounds in a second frequency range. The power source may be configured to provide power supply for the earphone core. The flexible circuit board may be configured to connect the earphone core with the power source.

Disclosed is a loudspeaker module which comprises a housing and a loudspeaker unit accommodated in the housing. The housing comprises a front cover, a first housing and a second housing, and a cavity is defined by the front cover, the first housing and the second housing. The loudspeaker unit is fixed in the cavity, and the cavity is divided into a front cavity and a rear cavity by the loudspeaker unit. The front cavity is a cavity defined by the loudspeaker unit, the front cover and the first housing. The loudspeaker unit comprises a vibration system and a magnetic circuit system. The front cover is provided with a cavity opposite to a mounting position of the loudspeaker unit, and the cavity is isolated from the front cavity and the rear cavity and is provided with a ventilation structure in communication with external environment. The loudspeaker module of the present invention has the advantage of good acoustic performance.

A sound-producing balanced armature receiver, as disclosed, includes a receiver housing with a first internal volume, a second internal volume, and a sound outlet. The receiver includes a first diaphragm separating the first internal volume into a first front volume and a first back volume and a second diaphragm separating the second internal volume into a second front volume and a second back volume. The receiver also includes a motor inside the first back volume of the housing such that the motor includes an armature mechanically coupled to both the first diaphragm and the second diaphragm, an acoustic seal between the first front volume and the second back volume such that the acoustic seal accommodates the mechanical coupling of the armature to the second diaphragm while providing acoustic separation between the first internal volume and the second internal volume, and a back-volume increasing structure attached externally to the housing and acoustically coupled with the second back volume to provide additional volume to the second back volume.

An apparatus comprising: an audio transducer configured to at least one of: generate sound upon receiving an audio signal provided by the apparatus; and convert sound into an audio signal to be processed by the apparatus; a housing component comprising one or more sound apertures configured to allow the transmission of sound through the one or more sound apertures; and an acoustic cavity inside the apparatus being acoustically coupled to the audio transducer using the one or more sound apertures wherein the one or more sound apertures are configured to provide an acoustic damping.

A loudspeaker system (50) has a front loudspeaker enclosure (10) having at least one front loudspeaker (20) and a rear loudspeaker enclosure (30) having at least one second loudspeaker (40). The front loudspeaker enclosure (10) is in the form of a horn-loaded enclosure. The rear loudspeaker enclosure (30) is in the form of a vented high-pass enclosure.