High sound pressure three-way horn speaker

Abstract

The utility model relates to a horn loudspeaker box technical field, concretely relates to a high sound pressure three-way horn loudspeaker box adopts the casing, low frequency unit, composite horn, the middle frequency unit of fixed connection in composite horn and the container in casing, and the high frequency unit of fixed connection in composite horn and the container in casing, through optimization three-way acoustic structure, with horn coupling mode, realize high sound pressure linear output time, full frequency band total harmonic distortion reduces significantly, and high frequency adopts composite horn, make its sound coupling reach better, sound energy utilization rate promotes, in addition, the casing is provided with sound wave export and one-way conduction's bending type sound channel, and the sound wave of low frequency unit leads out sound wave export along bending type sound channel, and bending type sound channel and sound wave export form folding type long horn mode, realize sound wave diffusion, be favorable to increase sound pressure, make it low power can obtain larger sound pressure, reduce the voice coil temperature rise amplitude of low frequency unit, be favorable to promote sensitivity.

Description

Technical Field

[0001] This utility model relates to the field of horn speaker technology, specifically to a high sound pressure level three-way horn speaker. Background Technology

[0002] Horn speakers achieve efficient sound propagation by adding a horn load (i.e., horn structure) in front of the speaker unit.

[0003] Traditional speakers generally face the following technical bottlenecks in high sound pressure level applications:

[0004] 1. High-frequency distortion is common in high-power applications, while low-frequency dynamic response is poor, making it difficult to achieve linear output across the entire frequency band.

[0005] 2. Conventional horn designs have insufficient control over mid-to-high frequency diffusion, resulting in high sound energy loss and rapid sound pressure attenuation.

[0006] 3. When high sound pressure levels are required, the power handling capacity of the speaker needs to be increased, which leads to a significant increase in the voice coil temperature of the speaker and a decrease in sensitivity. Summary of the Invention

[0007] In order to overcome the shortcomings and deficiencies of the existing technology, the purpose of this utility model is to provide a high sound pressure level three-way horn speaker.

[0008] The purpose of this utility model is achieved through the following technical solution: a high sound pressure level three-way horn speaker, comprising a housing, a low-frequency unit fixedly housed within the housing, a composite horn covered by an opening in the housing, a mid-frequency unit fixedly connected to the composite horn and housed within the housing, and a high-frequency unit fixedly connected to the composite horn and housed within the housing. The housing has a sound wave outlet and a unidirectional bent sound channel, and the sound waves of the low-frequency unit are led out of the sound wave outlet along the bent sound channel.

[0009] Preferably, the low-frequency unit is a long-stroke loudspeaker.

[0010] Preferably, the intermediate frequency unit includes a midrange speaker and an equalizer fixedly connected between the composite horn and the midrange speaker.

[0011] Preferably, the composite horn has a first diffuser opening, and the equalizer protrudes into the first diffuser opening; a support plate is fixedly connected inside the housing, the support plate has an insert hole, and the end of the midrange speaker away from the equalizer is connected to the insert hole of the support plate.

[0012] Preferably, the high-frequency unit is a compression driver, and the composite horn has a second diffusion port, through which the sound waves of the high-frequency unit are directed out of the composite horn.

[0013] Preferably, the lower half of the housing has a cavity for fixing and installing a low-frequency unit, and the top of the cavity is connected to a bent sound channel; the middle part of the housing has a clearance mounting port for the low-frequency unit to be installed into the cavity, and the clearance mounting port is covered with a partition.

[0014] The beneficial effects of this utility model are as follows: The high sound pressure level three-way horn speaker of this utility model adopts a shell, a low-frequency unit fixedly housed in the shell, a composite horn covered by an opening in the shell, a mid-frequency unit fixedly connected to the composite horn and housed in the shell, and a high-frequency unit fixedly connected to the composite horn and housed in the shell. By optimizing the three-way acoustic structure and the coupling method with the horn, the total harmonic distortion of the entire frequency band is significantly reduced when achieving high sound pressure level linear output. Moreover, the composite horn used in the mid and high frequencies achieves better acoustic coupling and improves the utilization rate of sound energy. In addition, the shell has a sound wave outlet and a unidirectional bent sound channel. The sound waves of the low-frequency unit are led out of the sound wave outlet along the bent sound channel. The bent sound channel and the sound wave outlet form a folded long horn, which realizes sound wave diffusion, which helps to increase the sound pressure level. It can obtain a large sound pressure level with low power, reduce the temperature rise of the voice coil of the low-frequency unit, and help to improve sensitivity. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This is an exploded view of the present invention;

[0017] Figure 3 This is a top view of the present invention;

[0018] Figure 4 yes Figure 3 Schematic diagram of the cross section of AA;

[0019] Figure 5 This is a frequency response and distortion diagram of the present invention. Curve a is the frequency response test result of the high sound pressure level three-way horn speaker of this embodiment, curve b is the frequency response test result of the conventional horn speaker, curve c is the distortion rate test result of the high sound pressure level three-way horn speaker of this embodiment, and curve d is the distortion rate test result of the conventional horn speaker.

[0020] The attached figures are labeled as follows: 1. Housing; 2. Low-frequency unit; 3. Composite horn; 4. Mid-frequency unit; 41. Midrange speaker; 42. Equalizer; 5. High-frequency unit; 6. Sound wave outlet; 7. Bent sound channel; 8. First diffuser; 9. Support plate; 10. Mounting hole; 11. Second diffuser; 12. Cavity; 13. Relief mounting port; 14. Partition. Detailed Implementation

[0021] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to embodiments and accompanying drawings. The content mentioned in the embodiments is not intended to limit the present invention.

[0022] like Figure 1-4 As shown, a high sound pressure level three-way horn speaker includes a housing 1, a low-frequency unit 2 fixedly housed within the housing 1, a composite horn 3 covering an opening in the housing 1, a mid-frequency unit 4 fixedly connected to the composite horn 3 and housed within the housing 1, and a high-frequency unit 5 fixedly connected to the composite horn 3 and housed within the housing 1. The housing 1 has a sound wave outlet 6 and a unidirectional bent sound channel 7. The sound waves from the low-frequency unit 2 are led out through the sound wave outlet 6 along the bent sound channel 7.

[0023] This high SPL three-way horn speaker, through optimized three-way acoustic structure and horn coupling method, achieves significantly reduced total harmonic distortion across the entire frequency range when achieving high SPL linear output. Moreover, the use of a composite horn 3 in the mid-to-high frequencies further enhances acoustic coupling and improves sound energy utilization. In addition, the housing 1 has a sound wave outlet 6 and a unidirectional bent sound channel 7. The sound waves from the low-frequency unit 2 are led out to the sound wave outlet 6 along the bent sound channel 7. The bent sound channel 7 and the sound wave outlet 6 form a folded long horn configuration, which diffuses the sound waves and increases the SPL, allowing it to achieve a higher SPL with low power. This also reduces the temperature rise of the voice coil of the low-frequency unit 2, thus improving sensitivity.

[0024] Furthermore, the low-frequency unit 2 is a long-stroke loudspeaker. Utilizing the long-stroke loudspeaker, in conjunction with the bent sound channel 7 and the sound wave outlet 6, a folded long horn configuration is formed, achieving sound wave diffusion and improving sensitivity.

[0025] Furthermore, the mid-frequency unit 4 includes a mid-range speaker 41 and an equalizer 42 fixedly connected between the composite horn 3 and the mid-range speaker 41. The equalizer 42, also known as an equalizer, is used to correct the frequency distortion of sound generated when the diaphragm vibrates in the speaker, thereby improving sound clarity and sound quality. The equalizer 42 is set at the front end of the mid-range speaker 41. The equalizer 42 improves sound clarity and sound quality, and the sound wave diffusion is achieved through the composite horn 3, which helps to increase sound pressure.

[0026] Furthermore, the composite horn 3 has a first diffuser 8, and the equalizer 42 protrudes into the first diffuser 8; a support plate 9 is fixedly connected inside the housing 1, and the support plate 9 has an insert hole 10. The end of the midrange speaker 41 away from the equalizer 42 is connected to the insert hole 10 of the support plate 9, and the support plate 9 supports one end of the midrange speaker 41. The composite horn 3 is fixedly connected to the other end of the midrange speaker 41, thereby improving the connection stability of the midrange speaker 41.

[0027] Furthermore, the high-frequency unit 5 is a compression driver, and the composite horn 3 has a second diffusion port 11. The sound waves from the high-frequency unit 5 are led out of the composite horn 3 along the second diffusion port 11. The intermediate frequency unit 4 and the high-frequency unit 5 are assembled together on a composite horn 3, which can effectively couple and guide the sound waves generated by the intermediate frequency unit 4 and the high-frequency unit 5. Coupling helps to reduce the phase difference of the sound waves during transmission, thereby reducing the possibility of phase interference. Guiding helps to ensure that the sound waves maintain a consistent phase relationship during propagation, further reducing phase interference.

[0028] Furthermore, the lower half of the housing 1 has a cavity 12 for fixing and installing the low-frequency unit 2, and the top of the cavity 12 is connected to the bent sound channel 7; the middle part of the housing 1 has a clearance mounting port 13 for the low-frequency unit 2 to be installed into the cavity 12, and the clearance mounting port 13 is covered with a partition 14. During assembly, the low-frequency unit 2 enters the clearance mounting port 13 from the opening of the housing 1 and is then installed into the cavity 12, which facilitates the assembly of the low-frequency unit 2. After assembling the low-frequency unit 2, the partition 14 is then placed on the clearance mounting port 13 to ensure the unidirectional conduction of the bent sound channel 7.

[0029] Using the high sound pressure level three-way horn speaker and the traditional horn speaker described in this embodiment as samples, their sound pressure output capabilities at different frequencies were tested, and the sound pressure level frequency response and distortion diagrams were obtained as follows: Figure 5 As shown in the figure, the existing horn speaker has low sensitivity and poor mid-to-high frequency response curves, resulting in a significant mid-frequency dip; the distortion rate of this embodiment is significantly reduced overall.

[0030] The above embodiments are preferred implementations of this utility model. In addition, this utility model can also be implemented in other ways. Any obvious substitutions without departing from the concept of this utility model are within the protection scope of this utility model.

Claims

1. A high sound pressure level three-way horn speaker, characterized in that: The device includes a housing, a low-frequency unit fixedly housed within the housing, a composite horn covering an opening in the housing, a mid-frequency unit fixedly connected to the composite horn and housed within the housing, and a high-frequency unit fixedly connected to the composite horn and housed within the housing. The housing has a sound wave outlet and a unidirectional bent sound channel. The sound waves from the low-frequency unit are led out of the sound wave outlet along the bent sound channel.

2. The high sound pressure level three-way horn speaker according to claim 1, characterized in that: The low-frequency unit is a long-stroke loudspeaker.

3. A high sound pressure level three-way horn speaker according to claim 1, characterized in that: The mid-frequency unit includes a mid-range loudspeaker and an equalizer fixedly connected between the composite horn and the mid-range loudspeaker.

4. A high sound pressure level three-way horn speaker according to claim 3, characterized in that: The composite horn has a first diffuser opening, and the equalizer protrudes into the first diffuser opening; a support plate is fixedly connected inside the housing, and the support plate has an mounting hole, with the end of the midrange speaker away from the equalizer connected to the mounting hole of the support plate.

5. A high sound pressure level three-way horn speaker according to claim 1, characterized in that: The high-frequency unit is a compression driver, and the composite horn has a second diffusion port. The sound waves of the high-frequency unit are exported from the composite horn along the second diffusion port.

6. A high sound pressure level three-way horn speaker according to claim 1, characterized in that: The lower half of the housing has a cavity for fixing and installing a low-frequency unit, and the top of the cavity is connected to a bent sound channel; the middle part of the housing has a clearance mounting port for the low-frequency unit to be installed into the cavity, and the clearance mounting port is covered with a partition.

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