60 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.

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 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.

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 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.

The utility model relates to loudspeaker technical field especially a kind of large-caliber micro low-frequency loudspeaker, including support, magnet cover installed on support, magnetic steel setting on magnet cover, voice coil matched with magnetic steel, diaphragm is connected with voice coil and is arranged on the support, ball top is arranged on the diaphragm, the diaphragm is made of high molecular elastomer material, the ball top is made of single-layer aluminum material, the utility model uses elastomer as diaphragm, uses single-layer aluminum material as ball top, compared with conventional size product, there is greater effective radiation area, higher low-frequency loudness.

A vehicle (1), comprising: first-row seats (11), second-row seats (12), and third-row seats (13). An onboard audio system (14) corresponding to the third-row seats comprises: a first surround speaker (141), a second surround speaker (142), a first tweeter (143), a second tweeter (144), a first mid-bass speaker (145), and a second mid-bass speaker (146), wherein the first surround speaker and the second surround speaker are symmetrically arranged about the central axis of the vehicle on a headliner corresponding to the third-row seats, and the first surround speaker and the second surround speaker are both arranged at positions away from the ears of users in the third-row seats; the first mid-bass speaker and the second mid-bass speaker are symmetrically arranged about the central axis of the vehicle, and the first mid-bass speaker and the second mid-bass speaker are both arranged at positions above the plane where armrests of the third-row seats are located; and the first tweeter and the second tweeter are symmetrically arranged about the central axis of the vehicle. The auditory experience for users riding in a vehicle having three rows of seats can be improved.

This invention discloses a vehicle. The vehicle includes: a first row of seats, a second row of seats, and a third row of seats. The in-vehicle playback system corresponding to the third row of seats includes: a first surround speaker, a second surround speaker, a first tweeter, a second tweeter, a first mid-bass speaker, and a second mid-bass speaker. The first surround speaker and the second surround speaker are symmetrically arranged on the ceiling corresponding to the third row of seats with reference to the vehicle's central axis. Both the first surround speaker and the second surround speaker are positioned away from the simulated ears of a person sitting on the third row of seats. The first mid-bass speaker and the second mid-bass speaker are symmetrically arranged with reference to the vehicle's central axis. Both the first mid-bass speaker and the second mid-bass speaker are positioned above the plane where the armrest of the third row of seats is located. The first tweeter and the second tweeter are symmetrically arranged with reference to the vehicle's central axis.

Embodiments of the present application provide a movable vehicle-mounted sound system, a vehicle and a vehicle-mounted sound control method. The movable vehicle-mounted sound system comprises at least one detachable mid-high sound module and at least one detachable bass module, the mid-high sound module comprises a mid-high sound speaker and a first combination structure, and the bass module comprises a bass speaker and a second combination structure; the mid-high sound module has a vehicle-mounted state connected with the vehicle through the first combination structure, the bass module has a vehicle-mounted state connected with the vehicle through the second combination structure, and the bass module and the mid-high sound module also have an off-vehicle state connected with each other through the first combination structure and the second combination structure; and the system further comprises: a receiving module for receiving an audio signal and a control signal; and a control module for generating a control instruction according to the control signal to drive the bass speaker and / or the mid-high sound speaker to play the audio signal when the bass module and the mid-high sound module are in the off-vehicle state.

This utility model relates to the field of speaker technology, specifically an adjustable tweeter speaker column device, comprising a speaker housing with a lower chamber and an upper chamber. A woofer is installed in the lower chamber, and a tweeter is installed in the upper chamber. Its key feature is that it further includes a support assembly composed of an upper bracket and a lower bracket. The two sides of the upper bracket are respectively hinged to the two side walls of the upper end of the upper chamber. The two sides of the lower bracket are respectively mounted on the two side walls of the lower end of the upper chamber, allowing continuous back-and-forth swinging. The upper and lower ends of the tweeter are respectively fixed to the upper and lower brackets. The tweeter is installed in the upper chamber with adjustable direction as the lower bracket swings back and forth. This utility model allows continuous adjustment of the tweeter angle and can be operated by only one person, making it very convenient to use.

The utility model discloses an ultrathin mega bass loudspeaker, and relates to the technical field of loudspeakers. The device comprises a magnetic circuit system, a vibration system and a support system, the magnetic circuit system comprises a magnet assembly, and the magnet assembly is provided with a magnetic gap; the supporting system comprises a basin frame, and a first annular step is arranged in the middle of the basin frame; the vibration system comprises a voice coil, a sound basin, a supporting basket and a damper, the voice coil is suspended in the magnetic gap, the edge of a middle hole of the sound basin is fixedly connected with the voice coil, the outer edge of the sound basin is provided with a folding ring, the folding ring is fixedly connected with the top of the basin frame, the supporting basket is cylindrical and surrounds the outer side of the magnet assembly, and the upper end of the supporting basket is fixedly connected with the bottom of the sound basin; the damper surrounds the outer side of the supporting basket and is fixed to the first annular step, and the edge of the hole is fixedly connected with the lower end of the supporting basket. According to the utility model, the stroke of the loudspeaker is not limited by the damper, the ultra-thinness, high power and large stroke of the loudspeaker are realized, and the mega bass performance effect is good.

This invention relates to a low-frequency sound pressure level (SPL) enhancement speaker enclosure and its cabinet. The enclosure includes a speaker enclosure and a subwoofer. The enclosure has a cavity and a subwoofer output, which consists of a mounting port and a sound wave radiation window. The mounting port and the sound wave radiation window connect the cavity to the outside environment, and are completely separated on the enclosure. The subwoofer is mounted in a sealed manner on the enclosure through the mounting port and generates low-frequency reverse waves radiating into the cavity during vibration. These reverse waves are then radiated into the outside air through the sound wave radiation window. In this invention, sound waves within the enclosure cavity can be radiated into the outside air through the sound wave radiation window, allowing sound waves behind the speaker to be utilized, thereby enhancing the low-frequency SPL and improving sound quality. This low-frequency SPL enhancement speaker enclosure is characterized by its simple structure, ease of acoustic parameter adjustment, and low cost.

An automobile power amplifier multifunctional full-channel function experiment bench is characterized in that the automobile power amplifier multifunctional full-channel function experiment bench comprises a test bench, the test bench is provided with a high-pitch loudspeaker, a middle-pitch loudspeaker, a low-pitch loudspeaker and a 10-segment audio level indicator, and the test bench is provided with a high-pitch loudspeaker, a middle-pitch loudspeaker, a low-pitch loudspeaker, a 10-segment audio level indicator, a high-pitch loudspeaker, a middle-pitch loudspeaker, a low-pitch loudspeaker and a 10-segment audio level indicator. An LED dual-display ampere-voltage meter is arranged on the test bench, and a self-locking automobile key switch is arranged on the test bench; according to the invention, all channels of the vehicle-mounted power amplifier can be comprehensively and independently tested, parameters such as different frequency responses, power output and distortion degree can be accurately measured, performance evaluation of the vehicle-mounted power amplifier in various working states is effectively covered, and the problem that a traditional testing means cannot simultaneously consider multi-channel and comprehensive testing is solved.

The invention discloses a tactile stimulator, and relates to the technical field of experimental equipment and biological supporting facilities. The tactile stimulator comprises: a positioning module; the broadband vibration generation module comprises a woofer, the woofer is constructed to output linear displacement within the frequency band of 1-1000 Hz, and the woofer is installed on the positioning module; and the conduction module comprises a stress transmission rod and a vibration transmission head, one end of the stress transmission rod is connected with the woofer, the vibration transmission head is connected with the other end of the stress transmission rod, and the vibration transmission head is used for touching an animal skin target spot. The tactile stimulator can realize accurate adjustment of force and vibration frequency aiming at specific positions of limbs of an animal, and supports long-term and repeatable tactile stimulation on the same position; the adjusting range is wide, and practicability is high.

The utility model provides a television with transverse sound box, including television main body and transverse sound box, transverse sound box includes: sound box casing, frequency -division circuit board, first treble loudspeaker, first bass loudspeaker, inverter tube, second treble loudspeaker, second bass loudspeaker, left sealing cover and right sealing baffle, sound box casing fixed connection is in television main body bottom, first treble loudspeaker fixed mounting is in first mounting hole, first bass loudspeaker fixed mounting is in second mounting hole, inverter tube fixed mounting is in third mounting hole, second treble loudspeaker fixed mounting is in fourth mounting hole, second bass loudspeaker fixed mounting is in fifth mounting hole, the output of frequency -division circuit board input and the power amplifier unit in television main body electric connection, frequency -division circuit board treble output and first treble loudspeaker and second treble loudspeaker electric connection, frequency -division circuit board bass output and first bass loudspeaker and second bass loudspeaker electric connection.

A wide coverage speaker is provided that includes an enclosure having a top, a bottom, a central longitudinal axis extending therethrough, and a low frequency cavity therein. An inner sound assembly situated within the enclosure and having an assembly central axis therethrough is also provided, which includes a downward facing woofer positioned within the low frequency cavity and centered about the assembly central axis, an upper chamber situated below the woofer, a tuned low-frequency absorber situated below and in fluid communication with the upper chamber, a plurality of upper-frequency drivers facing outwards in a circular array that is centered about the assembly central axis and situated below the tuned low-frequency absorber, and a cylindrical low-frequency outlet port centered about the assembly central axis and extending downward from the upper chamber and encircled by the circular array.

A wireless speaker has at least one planar magnetic driver to drive a tweeter and / or woofer in the speaker. The wireless speaker includes two radios for receiving audio from two different sources and simultaneously playing the audio from both sources. The speaker is a stand alone speaker that is not part of a headset.

The invention relates to the technical field of display cabinets, in particular to an audio-visual combined advertisement design display cabinet which comprises a movable base and further comprises a supporting cylinder base arranged above the movable base and constructed into a hollow cylindrical shell structure; the vertical supporting rod is fixedly arranged on the edge of the inner side of the supporting cylinder seat and extends upwards; and the top cover is fixedly connected to the top protection cylinder covers of all the vertical supporting rods. According to the display cabinet, the core supporting and protecting structure of the display cabinet serves as a resonant cavity of the treble and bass loudspeakers, large independent sound equipment which needs to be additionally configured for obtaining the high-quality sound effect of a traditional display cabinet is omitted, the overall structure is simplified, the display space is effectively saved, the overall structure of the display cabinet is more compact and attractive, and the display cabinet is more convenient to use. In addition, product display and sound transmission are integrated in physical space, and structural integrated design is achieved.

The utility model relates to the technical field of sound equipment, and discloses a sound and an automobile. The box body comprises two first side wall faces which are arranged in parallel and oppositely at intervals in the first direction and two second side wall faces which are arranged in parallel and oppositely at intervals in the second direction, and the first direction is perpendicular to the second direction. The two passive basins are symmetrically installed on the two second side wall faces respectively, the loudspeaking assembly comprises two woofer loudspeakers, the two woofer loudspeakers are symmetrically installed on the two first side wall faces respectively, the loudspeaking ends of the two woofer loudspeakers deviate from each other, and the vibration frequencies of the two woofer loudspeakers are different. According to the technical scheme provided by the embodiment of the invention, the two bass loudspeakers which are deviated from each other are arranged, so that a dual-core damping effect is achieved, and noise is reduced. Furthermore, the vibration frequencies of the two bass loudspeakers are set to be different values, so that the bass audios of the two bass loudspeakers are coupled, the effect of improving the sound quality of the sound equipment is achieved, and the bass sinking effect of the sound equipment is effectively improved.

A transparent speaker enclosure includes a hollow cylindrical speaker bracket, a sound-generating device mounted on the upper end of the speaker bracket, a light-emitting device mounted on the outer wall of the speaker bracket, and a battery. The sound-generating device includes a speaker bracket mounted on the upper end of the speaker bracket, a tweeter fixed to the speaker bracket and facing upwards, and a woofer fixed to the speaker bracket and located below the tweeter. The woofer faces upwards and is located inside the upper end of the speaker bracket. The light-emitting device, from the inside out, includes a light-emitting unit, a light-shielding cover, and a light-emitting cover. The light-emitting unit includes several LED beads, and the light-shielding cover has several light-emitting holes corresponding to the LED beads. This compact structure maximizes space utilization and achieves a synergistic improvement in sound and light performance.

The application relates to the technical field of coaxial sound boxes, in particular to a waterproof coaxial sound box, which comprises a shell, a loudspeaker assembly and a power supply assembly are arranged in the shell, the loudspeaker assembly comprises a bass loudspeaker and a treble loudspeaker, a support is fixed to the end face of the bass loudspeaker, the treble loudspeaker is arranged on the support, the treble loudspeaker is arranged on the outer side of the sound cavity of the bass loudspeaker and coaxially arranged with the bass loudspeaker, and the power supply assembly is arranged in the shell and used for supplying power to the loudspeaker assembly and performing control; the application has the advantages of reducing the space occupied by the loudspeaker and improving the waterproof capability of the sound box.

The utility model discloses a double magnetic circuit structure of ultrathin woofer, including shell, magnetic member, voice coil, damper and cone, the magnetic member includes first magnet and second magnet, first magnet is provided at one end portion of shell, second magnet is coaxially sleeved with first magnet inner side and is fixedly connected with first magnet, and the cone is provided with the first magnet. One end portion of the voice coil extends between the first magnet and the second magnet. The inner side and the outer side of the voice coil are respectively provided with one magnet, double magnetic circuits can be formed in the same loudspeaker space, compared with a conventional single magnet, the double-magnetic-circuit loudspeaker can generate larger magnetic field intensity when acting with the voice coil under the same condition, larger ampere force is formed to act on the voice coil, the cone is driven to generate larger amplitude, the sound loudness is improved, and the sound quality is improved. And the magnetic field can be relatively more uniform and stable through the washer, so that the fidelity of sound is improved to the greatest extent, and the sound effect quality of the loudspeaker is improved.

The invention provides a mounting device and method for a mega bass loudspeaker and a vehicle, the mounting device for the mega bass loudspeaker comprises a first mounting part, the first mounting part is arranged on the outer side of a rear wheel cover connecting plate of the vehicle, and the first mounting part is used for limiting the mega bass loudspeaker to the rear wheel cover connecting plate; the communication hole is formed in the rear wheel cover connecting plate, the communication hole is communicated with an inlet of the mega bass loudspeaker in a matched mode, the DDS mega bass loudspeaker can be stably installed on the outer side of the rear wheel cover connecting plate through the installation device for the mega bass loudspeaker, and the sound production effect is guaranteed by matching the communication hole with the loudspeaker inlet; the space of a trunk is effectively prevented from being occupied, volume loss is avoided, and sound quality performance and vehicle storage practicability are both considered.

1. The name of the design product: Bluetooth power amplifier (D900). 2. The use of the design product: used for receiving Bluetooth audio signals and amplifying the audio frequency after frequency division to drive the tweeter and woofer to sound. 3. The design points of the design product: the combination of shape, pattern and color. 4. The picture or photo that best indicates the design points: perspective view. 5. The design claimed contains color.

The utility model discloses a treble and bass integrated side sound output loudspeaker module which comprises a panel, the panel comprises a panel inner cavity and a panel outer cavity, the panel inner cavity is filled with N-base powder, the surface of the N-base powder is covered with N-base powder mesh cloth, the panel inner cavity is internally provided with a bass single body and a treble single body, and the treble single body and the treble single body are arranged in the panel outer cavity. The panel outer cavity is composed of a bass front cavity and a bass rear cavity, a bass steel sheet and bass steel sheet mesh cloth are arranged in the bass front cavity and the bass rear cavity in a penetrating mode, the bass steel sheet is located on the outer side of the bass steel sheet mesh cloth, a sound outlet hole is formed in the bass front cavity, a high-pitch steel sheet is further installed in the bass front cavity, and the high-pitch steel sheet and the bass steel sheet are arranged in parallel. The high pitch steel sheet is adjacent to the sound outlet hole, and the inner side of the panel is also provided with a back plate. According to the loudspeaker module, through adding the steel sheet structure, the rigidity and the heat dissipation performance of the module are enhanced, the separation effect of treble and bass is optimized, the tone quality performance is improved, and the space of a terminal product is saved through the design of integration of treble and bass.

The utility model discloses a best machine sound equipment structure which comprises a best machine base outer shell, the best machine base outer shell is composed of an upper shell body and a lower shell body, the upper shell body and the lower shell body are connected in a sealing and buckling mode, the top of the upper shell body is provided with a concave battery pack sinking position, and a battery pack is installed in the battery pack sinking position. A cover is detachably mounted at an opening above the battery pack sinking position; the battery pack sinking position and the cover jointly form a battery bin for accommodating the battery pack; a plurality of bass loudspeakers and a plurality of passive radiators are installed at the top of the lower shell, a plurality of universal wheel sinking positions used for installing universal wheels are installed at the bottom of the lower shell, and the sound production directions of the bass loudspeakers and the passive radiators face downwards. The utility model relates to the technical field of entertainment equipment, the subwoofer assembly is integrated in the base, the whole base is converted into the loud speaking cavity of the subwoofer, the transmission of low-frequency sound is facilitated, the tone quality of the best machine is greatly improved, and meanwhile, the structure layout is simple, and the design is reasonable.