176 results about "Woofer" patented technology

The utility model provides a double-ring waveguide horn sound box, which comprises a sound box shell, a bass assembly comprises a bass loudspeaker and a bass waveguide horn, the bass loudspeaker is arranged on the sound box shell in a penetrating manner, the bass waveguide horn is arranged on the bass loudspeaker and is positioned at one end of the bass loudspeaker, which is positioned outside the sound box shell, and the bass waveguide horn is positioned at the other end of the bass loudspeaker. The high-pitch assembly comprises a high-pitch loudspeaker and a high-pitch waveguide horn, the high-pitch loudspeaker is arranged on the sound box shell in a penetrating manner, the high-pitch waveguide horn is arranged on the high-pitch loudspeaker and located at one end, located outside the sound box shell, of the high-pitch loudspeaker, and the low-pitch waveguide horn and the high-pitch waveguide horn are arranged on the sound box shell in a staggered and superposed manner. According to the utility model, the bass waveguide horns and the treble waveguide horns are arranged on the sound box shell in a staggered and superposed manner, so that the up-down propagation direction of treble is compressed by bass, and the propagation direction of the treble is transversely diffused, thereby enabling the transverse diffusion of the treble to be wider, further increasing the listening position of the sound box, and improving the listening effect of the sound box. And the hearing feeling of the user is improved.

The utility model discloses an audio playing module and sound equipment, the module comprises a circuit board, a base and a double voice coil woofer arranged on the base, the base is provided with an avoidance port, the base is provided with a mounting rack at the avoidance port, the mounting rack is provided with a first tweeter and a second tweeter, the volume of the product can be effectively reduced, and the volume of the product is reduced. And a user can conveniently carry, use and install. The double-voice-coil woofer is provided with a first voice coil and a second voice coil, and the audio interface, the first voice coil, the second voice coil, the first tweeter and the second tweeter are all electrically connected with the circuit board. The circuit board is used for carrying out decoding, frequency division and amplification on an audio signal input by the audio interface and then respectively transmitting the audio signal to the first voice coil, the second voice coil, the first tweeter and the second tweeter, so that the first tweeter, the second tweeter and the double-voice-coil woofer play audios of different frequency bands, and the layering sense of the played sound effect is improved.

A new high-fidelity speaker includes a cabinet outer wall, a front partition and a side partition, the front partition and the side partition are arranged in the cabinet outer wall, the side edge of the front partition abuts against the side partition, the remaining edges of the front partition abut against the inner surface of the cabinet outer wall, the internal space surrounded by the cabinet outer wall is divided into a mid-high sound cavity, a bass cavity and a sound guide cavity, one side of the side partition is the sound guide cavity, and the opposite side is the mid-high sound cavity and the bass cavity, a high-pitched speaker port and at least one medium-pitched speaker are opened on the cabinet outer wall part corresponding to the mid-high sound cavity to install the speakers; a bass sound guide port is opened on the cabinet outer wall part corresponding to the sound guide cavity, the bass sound guide port is adjacent to the aforementioned at least two openings distributed on both sides of the side partition; the part of the side partition corresponding to the bass cavity is opened with a bass port to install a bass speaker towards the sound guide cavity, and the bass cavity forms a closed cavity. The speaker has good bass diving, sound image positioning, resolution and small space size.

A coaxial speaker includes a tweeter assembly, a woofer assembly, and a frame. The tweeter assembly is used to generate treble sound with a primary propagation direction along a first direction. The woofer assembly is used to generate bass sound with a primary propagation direction along the first direction. The woofer assembly includes a sound guide portion, which faces the tweeter assembly. The treble sound generated by the tweeter assembly, having a primary propagation direction along the first direction, is guided by the sound guide portion to propagate in a second direction. The tweeter assembly and woofer assembly are coaxially arranged, and the second direction is different from the first direction. The tweeter assembly and woofer assembly are mounted on the frame.

A coaxial speaker including a basket frame, a magnetic circuit system, a woofer vibration system, and a tweeter vibration system. The magnetic circuit system is provided with a cavity, a tweeter magnetic gap, and a woofer magnetic gap. The woofer vibration system includes a woofer diaphragm and a woofer voice coil. The tweeter vibration system includes a tweeter diaphragm and a tweeter voice coil. The woofer magnetic gap includes a first magnetic gap and a second magnetic gap, and the woofer voice coil includes a first voice coil and a second voice coil. The magnetic circuit system includes a magnetic yoke, a main magnetic portion, a first sub-magnetic portion, and a second sub-magnetic portion. The main magnetic portion includes a first magnet, a second magnet, a third magnet, and a main pole core. The main core includes a first plate portion, a second plate portion, and a wall portion.

The utility model discloses a sealing structure of a special-shaped sound cavity, which belongs to the technical field of sound boxes and comprises an upper shell assembly and a lower shell assembly, the upper shell assembly is positioned above the lower shell assembly, two ends of one side of the upper shell assembly are respectively provided with a woofer and a tweeter, and the lower end of the interior of the lower shell assembly is provided with a vibrating diaphragm. Fixing screws are arranged on the three sides of the lower end of the lower shell assembly, installation of the sealing structure can be completed through mutual splicing of the upper shell assembly and the lower shell assembly, positioning and pre-fixing can be carried out through matching of the protruding ribs and the grooves and matching of the male buckles and the female buckles, meanwhile, fixing is carried out through the fixing screws, a user can carry out assembling conveniently, and the sealing structure is convenient to use. And the dispensing glue is filled in the groove, so that the air tightness and the reliability are improved.

The invention discloses a sound box sound source directivity adjusting method and a sound box, and relates to the technical field of audio equipment. The sound box comprises a box body, a first sound production part (a mid-high pitch sound post), a second sound production part (a woofer) and a rotating shaft assembly, the second sound production part is arranged on the side face of the box body, and the first sound production part is connected with the box body through the rotating shaft assembly. According to the adjusting method, biaxial rotation of the first sound production part is achieved through the rotating shaft assembly, wherein in the first axial rotation state, 0-270-degree pitch angle rotation is conducted around the horizontal axis, and in the second axial rotation state, 0-360-degree yaw angle rotation is conducted around the vertical axis. In an initial state, the two sounding parts point to the same direction; during adjustment, a pitch angle or a yaw angle can be independently selected to be adjusted to a target angle, and a damping rotating shaft of the rotating shaft assembly is matched with the shaft sleeve to provide damping force, so that the adjusted angle is kept stable, and finally, the sound source directions of the two sound production parts meet the use requirements. The method and the sound box can flexibly adapt to different listening scenes, ensure that the sound field pointing is accurate and stable, and improve the tone quality experience.

1. The name of the design product: bass loudspeaker cone. 2. The use of the design product: parts for loudspeakers. 3. The design points of the design product: in shape. 4. The picture or photo that best shows the design points: perspective view 1.

The invention discloses a portable sound box for a vehicle, and the sound box comprises a quick-release fixed seat which is installed and fixed in a passenger compartment of the vehicle, and the quick-release fixed seat is provided with a power supply connecting seat and a quick-release linkage assembly; the sound box shell is mounted on the quick-release fixing seat and is fixed through a quick-release linkage assembly, and meanwhile, an electric connecting part at the bottom of the sound box shell is in butt joint conduction with the power supply connecting seat; the inner core control box is installed in the sound box shell, a bass loudspeaker is installed at the top of the inner core control box, at least one alto loudspeaker is installed at one end of the inner core control box, a high pitch loudspeaker is installed at the position between the upper sides of the alto loudspeakers, a control circuit board is installed on the lower portion of the inner side of the inner core control box, and a loudspeaker is installed on the control circuit board. A battery box is installed on the lower side of the control circuit board, and side voice diaphragms are installed on the front side and the rear side of the inner core control box. The vehicle-mounted sound box can solve the problems that an existing vehicle-mounted sound box is inconvenient to disassemble and assemble, installation and fixation in a vehicle are not firm, and the sound box effect is poor.

The utility model discloses a novel linear array sound box, which comprises a paint-sprayed wooden box, a loudspeaker system formed by combining a woofer and a treble horn is arranged in the paint-sprayed wooden box, a front full-iron mesh enclosure is arranged at the front end of the paint-sprayed wooden box, side full-iron mesh enclosures are arranged on two sides of the paint-sprayed wooden box, and the front full-iron mesh enclosure and the side full-iron mesh enclosures are arranged in the paint-sprayed wooden box. The front full-iron mesh enclosure and the side full-iron mesh enclosure are made of high-strength metal materials, front hanging supports are arranged on the two sides of the front end of the paint spraying wooden box, rear angle supports are arranged on the two sides of the rear end of the paint spraying wooden box, and the front hanging supports and the rear angle supports have the multi-angle adjusting function. According to the novel linear array sound box, the design of the front hanging bracket and the rear angle bracket is improved, the fixing and angle adjusting capabilities of the sound box are enhanced, and the front part and the side surfaces of the sound box are comprehensively protected by adopting the full-iron mesh enclosure, so that the protection performance and the heat dissipation efficiency are improved, and the stability and the durability of the sound box in various application scenes are ensured.

The present invention discloses a vehicle-mounted woofer speaker device and a design method thereof. The vehicle-mounted woofer speaker device includes a box and a woofer speaker disposed in the box, the woofer speaker includes a paper cone, the paper cone has a front surface facing the interior of the vehicle and a rear surface opposite thereto, a cavity is formed between the rear surface of the paper cone and the box, a main waveguide for connecting the cavity to the outside is provided in the box, and a secondary waveguide is also provided in the box, the main waveguide and the secondary waveguide each have an inlet connected to the cavity, the main waveguide has an outlet for connecting to the outside of the vehicle, and the secondary waveguide has an outlet for connecting to the outside or inside of the vehicle. The woofer speaker device of the present invention has high sensitivity, more obvious low-frequency extension, and improved sound pressure level at low frequencies; the design method of the present invention can adjust and control more parameters and has a large degree of freedom.

A coaxial loudspeaker comprises a tweeter assembly, a woofer assembly, and a frame. The tweeter assembly is used to produce high-frequency sound with a primary propagation direction along a first direction. The woofer assembly is used to produce bass sound with a primary propagation direction along the first direction. The woofer assembly includes a sound guide facing the tweeter assembly. The high-frequency sound produced by the tweeter assembly, which has a primary propagation direction along the first direction, is guided by the sound guide to propagate in a second direction. The tweeter and woofer assemblies are arranged coaxially, and the second direction of propagation differs from the first. The tweeter and woofer assemblies are mounted on the frame.

The utility model discloses a sounding unit, which comprises two structural units, each structural unit comprises a basin stand, U iron, a central magnetic structure, an annular magnetic structure, a high-pitch vibration assembly, a support ring and a low-pitch vibration assembly, and the basin stand is provided with a notch; the enclosure wall of the U iron is connected with the basin frame and blocks the notch; the central magnetic structure is arranged on the U iron; the annular magnetic structure surrounds the central magnetic structure and is arranged on the U iron, a high-pitch magnetic gap is formed between the annular magnetic structure and the central magnetic structure, a low-pitch magnetic gap is formed between the enclosure wall of the U iron and the annular magnetic structure, and a through hole communicated with the high-pitch magnetic gap is formed in the U iron; the supporting ring is arranged on the annular magnetic structure; u irons of two structural units in the sounding unit are connected with each other, high-pitch magnetic gaps of the two structural units are communicated through a through hole, gaps of the two basin frames are correspondingly spliced to form an installation window, and a vibration motor is arranged in the installation window. The sound production unit has a vibration function and realizes high integration.

The utility model provides a sound box with a variable directional angle and a constant curvature, which relates to the technical field of loudspeakers and comprises a box body. A variable-direction constant-curvature acoustic horn for loading a loudspeaker unit, wherein the variable-direction constant-curvature acoustic horn for loading the loudspeaker unit is arranged at the upper part of the inner cavity of the box body; the woofer unit is arranged in the inner cavity of the box body; and the heat dissipation units are arranged on the two sides of the box body. The variable-direction constant-curvature acoustic horn loaded with the tweeter unit, the woofer unit and the like are arranged in the box body, so that wider sound field coverage is provided, the uniformity of sound transmission in a wide area is ensured, the standing wave reflection problem is reduced, the high-frequency response is smoother, and the sound quality fidelity is kept; through the rear hanging screws, the top and bottom hanging screws and the like on the box body, the installation angle of the sound box can be adjusted according to requirements, and different sound field requirements can be met.

The embodiment of the invention discloses a multi-loudspeaker array and a sound field partition control method of a vehicle cabin. The multi-loudspeaker array comprises a plurality of bass loudspeakers, a plurality of alto loudspeakers, a plurality of treble loudspeakers, a plurality of headrest loudspeakers, one or more mega bass loudspeakers and a plurality of surround loudspeakers. The bass loudspeaker, the alto loudspeaker and the treble loudspeaker are distributed in a plurality of areas of a vehicle cabin and are used for forming a sound field covering a full frequency band; the headrest loudspeaker is arranged at the position of a seat headrest and used for making sound to a corresponding seat in a near-field mode. The mega bass loudspeaker is arranged in the rear area of the vehicle cabin and used for supplementing low-frequency signals; the surround loudspeaker is arranged in the rear area of the vehicle cabin and used for forming a sound field surrounding the vehicle cabin. According to the embodiment of the invention, through the distributed layout and function division of the high-density multi-loudspeaker array, the sound fields of different seats are independently constructed and do not interfere with each other, a hardware basis is provided for partition control, and personalized audio requirements are met.

The invention is applicable to the technical field of audio playing equipment, and provides a sound box with a high pitch turbine structure, which comprises a box body, and a bass unit mounting position, a suspension rubber ring and a coaxial positioning ring are integrally formed on the front surface of the box body, the bass unit and the treble unit are coaxially embedded in the mounting position through the coaxial positioning ring and the suspension rubber ring; according to the sound box, through the design of the integrated structure and the involute vortex air channel on the front face of the box body and in cooperation with the nanometer damping layer and the elastic damping structure, high-frequency compression distortion and resonance distortion are greatly reduced, meanwhile, the high frequency is extended to 30 KHz or above through the 2.5 frequency division design, and more music details and overtones are restored; the coaxial positioning ring is used for guaranteeing the coaxiality of the bass unit and the hanging rubber ring, and the combined structure of the bottom phase guide tube and the central cone and the filtering grating assembly with the interval of 5mm-8mm are combined, so that ultralow-frequency 360-degree uniform diffusion and accurate filtering are realized, and the pain points of low-frequency turbidity and poor directivity of a traditional phase-inverted sound box are solved.

The present invention discloses an earphone, wherein a transverse partition located within the earphone cavity separates the earphone cavity into an acoustic cavity and an external cavity. A speaker unit comprises: a speaker bracket, a woofer and a tweeter mounted within the speaker bracket. The speaker unit is mounted within the acoustic cavity and separates the acoustic cavity into a front acoustic cavity and a rear acoustic cavity. The rear acoustic cavity is isolated into a bass rear acoustic cavity connected to the woofer and a treble rear acoustic cavity connected to the tweeter. The housing body is provided with a sound outlet connected to the front acoustic cavity, a bass tuning hole connected to the bass rear acoustic cavity, and a treble tuning hole connected to the treble rear acoustic cavity. The present invention provides treble and woofer speakers in the earphone, and employs independent sound leakage cavities to optimize airflow paths for different frequency bands, avoid frequency band interference, isolate low-frequency energy, and maintain high-frequency clarity. The independently designed sound leakage cavities can retain a complete frequency response curve.

The utility model relates to the technical field of loudspeakers, in particular to a woofer, which comprises a sound production part and a sound amplification part, a washer is arranged at the bottom end of the sound production part, a magnet is fixedly arranged on the front side surface of the washer, the washer is used for guiding a magnetic field generated by the magnet into a specific position, a T iron is fixedly arranged on the front side surface of the magnet, and a voice coil is arranged above the washer. The voice coil is sleeved on an iron core in the center of the T iron; the loudspeaker comprises a voice coil, a sound amplifying part is arranged on the voice coil, a support is arranged at the tail end of the sound amplifying part, a cone is arranged on the inner ring of the support, the loudspeaker further comprises an elastic limiting supporting part arranged on the periphery of the voice coil, the elastic limiting supporting part is composed of dampers, and the dampers limit the voice coil to vibrate within a fixed range. The voice coil is limited in a fixed range to vibrate, energy loss is reduced, the conversion rate of electric energy and sound energy is improved, and the outer edge of the damper is upwarped to protect the wire and prevent the wire from being in contact with the iron support to cause short circuit.

1. The name of the design product: door panel woofer speaker cover (P301). 2. The use of the design product: used for car side door panel woofer speaker. 3. The design points of the design product: the combination of shape and pattern. 4. The picture or photo that best indicates the design points: kit 1 perspective view. 5. Kit description of other circumstances that need to be explained: kit 1 is a door panel woofer speaker cover; kit 2 is a door panel tweeter speaker cover.

This utility model discloses a mid-bass speaker excitation force acquisition and testing device, including a base. A mid-bass speaker is fixedly connected to the top of the base via four pillars. Force sensors are installed on the pillars, and the detection end of the force sensor is in contact with the mid-bass speaker. A baffle is also fixed to the top of the base via a first bracket. A microphone is fixedly connected to the top of the baffle via a tripod. A laser pickup is fixedly connected to the top of the baffle via a second bracket. The laser pickup is located directly above the mid-bass speaker. This device can accurately test the working excitation force of the mid-bass speaker. This device is used to simulate the state of the audio system installed inside the vehicle body. The force sensors are used to measure the vertical force at the mounting point of the mid-bass speaker, the microphone is used to monitor the quality of the sound source played by the mid-bass speaker, and the laser pickup is used to monitor the diaphragm vibration of the mid-bass speaker.

The utility model provides a sound box front panel, which comprises a panel body detachably installed at an opening part at the front side of a sound box, the back surface of the panel body is convexly provided with an annular support plate used for connecting a woofer, and when the outer edge of the front end of the woofer is assembled and connected to the outer end surface of the annular support plate, the annular support plate is connected with the front end surface of the woofer. A sound cavity is formed between the front side wall of a cone of the woofer and the rear side wall of the panel body, and the panel body is provided with a sound guide channel communicated with the sound cavity. The sound box front panel disclosed by the utility model is arranged at the front side of the sound box shell and is used for fixing the loudspeaker, so that the sound transmission distance can be increased, and the sound effect quality can be improved.

The application discloses a coaxial loudspeaker with a horn and a shape optimization method thereof. The coaxial loudspeaker comprises a bass loudspeaker, a treble loudspeaker, and a horn with an inner cavity and open at both upper and lower ends. The treble loudspeaker comprises a treble cone, the horn surrounds the treble cone, the lower end of the horn is connected to the treble loudspeaker, and the upper end of the horn is the largest inner diameter part. The shape optimization method comprises the following steps: S1, establishing a geometric model of the coaxial loudspeaker as claimed in claim 1 to obtain a control node in a profile curve of the horn; S2, setting a physical field; S3, defining material parameters; S4, meshing; S5, optimizing geometric parameters of the profile shape of the horn; and S6, drawing an optimized geometric model of the horn according to the optimized parameters. The application can have a better frequency response curve when the treble loudspeaker works, and can quickly and accurately optimize the shape of the horn to improve the acoustic performance of the loudspeaker.

The invention provides a directional sound amplification sound box, relates to the technical field of sound boxes, and aims to solve the technical problems that a sound amplification sound box in the prior art is short in sound transmission distance, non-uniform in sound field coverage, poor in definition and poor in sound quality, and noise disturbs residents. The directional sound amplification sound box comprises a box body, a compression type coaxial neodymium magnetic driver used for generating middle and high pitches is arranged in the box body, the front end of the compression type coaxial neodymium magnetic driver is connected with a constant directivity horn, and the constant directivity horn comprises two opposite first side walls and two opposite second side walls. The distance between the two first side walls and the distance between the two second side walls are gradually increased from back to front, the outer walls of the two first side walls are connected with first bass loudspeakers, the inner walls of the two first side walls are provided with sound production structures, the box body is made of an anti-aging and anti-ultraviolet plastic shell, the bottom of the box body is provided with a three-channel D-type power amplifier, a network with AES67 and a DSP module, and the box body is provided with a loudspeaker. The sound box is provided with a U-shaped support, and the horizontal and vertical angles can be adjusted.

The utility model provides a loudspeaker, which belongs to the field of loudspeakers and comprises a basin frame, a vibration system and a magnetic circuit system are arranged on the basin frame, the vibration system comprises a sound basin, a positioning support chip and a voice coil, the sound basin and the positioning support chip are arranged on the basin frame, the voice coil is arranged on the sound basin and the positioning support chip, the positioning support chip comprises a positioning support chip body, and the positioning support chip body is arranged on the positioning support chip body. A supporting arm is upwards arranged on the inner side of the positioning support sheet body; compared with the traditional loudspeaker, the vibration space of the positioning support chip is eliminated, the total height of the product is reduced, the amplitude space of the whole vibration system can be properly increased, and the reliability is improved; the positioning support chip keeps an offset space between the positioning support chip and the magnetic conductive bowl, so that a vibration space does not need to be specially reserved between the positioning support chip and the magnetic conductive bowl, the volume of the woofer is reduced, the Z height is fully utilized, and for a flat woofer, a larger magnet system can be arranged in the woofer and more space is provided for offset, so that the positioning support chip and the magnetic conductive bowl are integrated. And the performance is improved.

The utility model relates to the technical field of sound boxes, in particular to a sound box with a loudspeaker protection structure, which comprises a box body and a front cover arranged on one side of the box body, a first limiting groove and a second limiting groove are arranged in the front cover in a penetrating manner, a bass loudspeaker is arranged in the first limiting groove, and a treble loudspeaker is arranged in the second limiting groove. Protective covers are arranged on the outer sides of the bass loudspeaker and the treble loudspeaker, and protective covers for protecting the loudspeakers are fixedly arranged on the outer sides of the first limiting groove and the second limiting groove, so that an external object is effectively prevented from directly contacting a loudspeaker diaphragm, the loudspeakers are protected from being damaged, and the protective covers not only provide physical protection, but also can protect the loudspeakers from being damaged. The loudspeaker is arranged in the box body, normal vibration and sound transmission of the loudspeaker are ensured through air permeability of the loudspeaker, dust is prevented from entering the box body, an audio distributor is further installed in the box body, the audio distributor at least comprises a frequency divider, and the audio distributor is installed through a third limiting groove and is additionally fixed through a limiting strip.

The utility model discloses an integrated low-sound baffle sound box. The integrated low-sound baffle sound box comprises an upper sound box and a lower sound box, the upper sound box comprises an upper bottom plate, the lower sound box comprises a lower top plate, and the upper bottom plate and the lower top plate are integrally formed. The upper sound box further comprises an upper front baffle plate, an upper front back plate and an upper rear baffle plate, the upper front baffle plate and the upper front back plate are fixedly connected and form an upper sound box accommodating space for simultaneously accommodating a plurality of alto loudspeakers and a plurality of high-pitch loudspeakers, the alto loudspeakers are respectively embedded in the upper front baffle plate, and the high-pitch loudspeakers are respectively embedded in the upper front baffle plate or the upper rear baffle plate; and a gap is formed between the upper front back plate and the upper rear baffle plate. The integrated low-sound baffle sound box disclosed by the utility model has the beneficial effects that the baffle, the linear array and the high, medium and low-sound loudspeakers are seamlessly coupled together by adopting the high-integration box body, so that a sound field effect approximate to 360 degrees is formed.

The utility model relates to an outdoor waterproof alto-tweeter, which comprises a basin stand, a woofer and a tweeter. The bass horn comprises a bass magnetic circuit system and a bass vibration system. The bass magnetic circuit system comprises a T iron, a magnet and a Wass. The bass vibration system comprises a bass voice coil, a bass damper and a bass vibrating diaphragm. The high-pitch loudspeaker comprises a high-pitch support, a high-pitch magnetic circuit, a high-pitch vibrating diaphragm, a high-pitch voice coil, a phase plug, a high-pitch cup and a waterproof sealing piece. The tweeter and the woofer are coaxially arranged, and the tweeter and the woofer are accommodated in the woofer voice coil. The high pitch cup is fixedly arranged on one side of the high pitch support, one side of the waterproof sealing piece is fixedly connected with the low pitch vibrating diaphragm, the other side of the waterproof sealing piece is fixedly connected with the high pitch cup, and therefore the interior of the loudspeaker is sealed, and the loudspeaker has good waterproof performance.

The application discloses a portable sound equipment for vehicle, which comprises a quick-release fixing seat, a power supply connecting seat and a quick-release linkage assembly are arranged on the quick-release fixing seat, the quick-release fixing seat is installed and fixed in a passenger cabin of the vehicle, a sound box shell is installed on the quick-release fixing seat and is fixed through the quick-release linkage assembly, meanwhile, an electric connection part at the bottom of the sound box shell is connected and conducted with the power supply connecting seat, an inner core control box is installed inside the sound box shell, a bass loudspeaker is installed on the top of the inner core control box, at least one medium tone loudspeaker is installed on one end of the inner core control box, a high tone loudspeaker is installed between the upper sides of the medium tone loudspeakers, a control circuit board is installed on the inner side of the lower part of the inner core control box, a battery box is installed on the lower side of the control circuit board, and side sound membranes are installed on the front and back sides of the inner core control box. The application can solve the problems of inconvenient disassembly and assembly, unfirm installation, and poor sound box effect of the existing vehicle-mounted sound equipment.

This utility model discloses a sound guiding structure for an earphone with high and low frequency units, comprising an earphone shell and a speaker unit. The speaker unit divides the cavity into a front cavity and a rear cavity. The speaker unit is a coaxial dual speaker, comprising: a ring-shaped woofer and a tweeter located at the center of the woofer, with the woofer and tweeter having the same sound-emitting surfaces. A sound guide is provided inside the earphone shell, and a through-type tweeter channel is provided within the sound guide. One end of the tweeter channel is connected to the sound-emitting surface of the tweeter, and the other end extends to the mouthpiece. The sound generated by the woofer enters the front cavity and is then conducted out through the mouthpiece. The sound generated by the tweeter is directly conducted out through the tweeter channel. This utility model uses a coaxial dual speaker, and the sound guide directly conducts the sound generated by the tweeter through the tweeter channel, avoiding the attenuation caused by resonance and sound wave reflection of the high-frequency energy of the tweeter in the front cavity.

A coaxial speaker protection method, a coaxial speaker protection system, a coaxial speaker protection device, and a coaxial speaker protector are provided. The coaxial speaker protection method includes modeling a temperature of a tweeter to obtain a tweeter voltage-temperature transfer function, modeling a temperature and an amplitude of a woofer to obtain a woofer voltage-amplitude-temperature transfer function, modeling a coaxial device having the tweeter and the woofer to obtain a thermal conduction function of the coaxial device, calculating a current temperature of the tweeter according to a current voltage of the tweeter, calculating a current temperature of the woofer according to a current voltage of the woofer, etc. The tweeter and the woofer are protected through a feedforward manner, so that sound quality of a coaxial speaker is improved.