CN211909132U

CN211909132U - Double 12-inch active four-frequency-division linear array sound box

Info

Publication number: CN211909132U
Application number: CN202020852269.3U
Authority: CN
Inventors: 吴华山; 张苗
Original assignee: Guangzhou Ad Audio Co ltd
Current assignee: Guangzhou Ad Audio Co ltd
Priority date: 2020-05-20
Filing date: 2020-05-20
Publication date: 2020-11-10
Anticipated expiration: 2030-05-20

Abstract

The utility model provides a two 12 cun active four frequency division linear array audio amplifier, including the box with locate high frequency unit, intermediate frequency unit, well low frequency unit, the low frequency unit in the box, the box includes the installation cavity and locates the low frequency chamber of installation cavity left and right sides respectively, the middle part of installation cavity is equipped with a curved surface baffle, the curved surface baffle is divided into two mutually independent first cavitys and second cavity around with the installation cavity, the front end of first cavity is equipped with closely continuous well low frequency unit, intermediate frequency unit, high frequency unit, well low frequency unit from left to right in proper order, the high frequency unit is established in the front end middle part of first cavity, intermediate frequency unit and high frequency unit symmetry formula respectively set up the both sides at the high frequency unit; the low-frequency units are respectively arranged on the left side and the right side of the second cavity, and the middle part of the rear end of the second cavity is inwards sunken; the intermediate frequency unit is arranged in the intermediate frequency cavity. The utility model discloses not only have lower low frequency response, have bigger sound pressure level moreover.

Description

Double 12-inch active four-frequency-division linear array sound box

Technical Field

The utility model relates to a speaker technical field, concretely relates to two 12 cun active four divide-by-frequency linear array audio amplifier.

Background

The existing double 12-inch linear array loudspeaker system is mostly a three-frequency division system, and a larger sound pressure level and a wider frequency response are often needed in large-scale demonstration activities, while the existing three-frequency division line array system needs to give consideration to both low frequency and medium and low frequency because the 12-inch linear array loudspeaker system also solves the problems that the effect of the system is not optimal and the lower low frequency response cannot be obtained because the sound wave at the back part of the box body offsets energy; moreover, the sound at the rear part of the sound box of the double 12-inch three-frequency division system is too big, so that the sound amplification of actors and workers on the stage is influenced, and the sound effect is poor.

SUMMERY OF THE UTILITY MODEL

To prior art's not enough, the utility model provides a two 12 cun active four frequency-division linear array audio amplifier can offset the sound at box rear portion to minimum, not only has lower low frequency response, has bigger sound pressure level moreover.

The technical scheme of the utility model is realized like this:

a double 12-inch active four-frequency-division linear array sound box comprises a box body, and a high-frequency unit, a medium-frequency unit and a low-frequency unit which are arranged in the box body, wherein the box body comprises a mounting cavity and low-frequency cavities which are respectively arranged on the left side and the right side of the mounting cavity, a curved surface partition plate is arranged in the middle of the mounting cavity, the mounting cavity is divided into a front cavity and a rear cavity which are mutually independent by the curved surface partition plate, the medium-frequency unit, the high-frequency unit, the medium-frequency unit and the medium-frequency unit which are tightly connected are sequentially arranged at the front end of the first cavity from left to right, the high-frequency unit is arranged in the middle of the front end of the first cavity, and; the low-frequency units are respectively arranged on the left side and the right side of the second cavity, and the middle part of the rear end of the second cavity is inwards sunken; the intermediate frequency unit is arranged in the intermediate frequency cavity.

Further, the high frequency unit includes two high-frequency drivers and two high-pitch horns, and two high-pitch horns are installed respectively in the high frequency cavity of mutual independence, the high frequency driver is installed respectively the sound diffusion end of high-pitch horn, the sound diffusion end of high-pitch horn is provided with the high pitch diffuser plate respectively.

Further, the low frequency unit is 110 cun low frequency unit, well low frequency unit is 1 12 cun speakers, the intermediate frequency unit is 2 6.5 cun speakers that are adjacent to each other, and 2 6.5 cun speakers are installed respectively in the intermediate frequency cavity that is independent each other.

Furthermore, the intermediate frequency cavity is a rectangular frame, and the size of the rectangular frame is matched with that of the 6.5-inch loudspeaker.

Further, a rectangular frame extends partially into the high frequency cavity.

Furthermore, the intermediate frequency unit is close to the high frequency unit, and the left end and the right end of the high pitch diffusion plate block partial end faces of the 6.5-inch loudspeaker.

Further, the left end and the right end of the high-pitch diffusion plate are located at the 2/5 end face of the 6.5-inch loudspeaker.

Furthermore, the curved baffle is gradually bent from two ends to the direction of the second cavity.

Furthermore, the left side and the right side of the second cavity are obliquely arranged, so that the bottom of the low-frequency unit faces to the center of the installation cavity.

Furthermore, a four-channel digital power amplifier module is arranged on the inner side of the sunken part, a 1-in 4-out DSP digital audio processor is arranged in the four-channel digital power amplifier module, the four-channel digital power amplifier module is electrically connected with the high-frequency unit, the medium-frequency unit and the low-frequency unit respectively, the four-channel digital power amplifier module is started, and the DSP digital audio processor is used for controlling the tone of the sound box.

Compared with the prior art, the utility model has the advantages of it is following: the utility model provides a high frequency unit, intermediate frequency unit, well low frequency unit, low frequency unit constitute four frequency division system, form new acoustic structure, carry out the audio frequency through the built-in DSP digital audio processor that 1 advances 4 plays of active power amplifier module of a 4 passageways and rectify to reach the best with efficiency and tone quality.

Specifically, the utility model discloses a high frequency driver and high pitch horn provide high frequency channel response, provide the intermediate frequency channel response through 4 6.5 cun speakers, and 12 cun speakers then supplement and the low band response as the intermediate frequency channel simultaneously, 10 cun speakers then supplement as the low band to form a four frequency division system's audio amplifier, sensitivity can reach 110dB, not only has lower low frequency response, has bigger sound pressure level moreover.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.

Fig. 1 is a schematic cross-sectional structure view of a dual 12-inch active four-frequency-division linear array sound box of the present invention;

fig. 2 is a bottom view of the dual 12-inch active four-frequency-division linear array speaker of the present invention;

fig. 3 is a schematic cross-sectional view of a treble diffuser.

The attached drawings are as follows: 1, a box body; 2 a high frequency unit; 21 a high frequency driver; 22 high horn; 23 a high pitch diffuser plate; 231 a convex part; 3 an intermediate frequency unit; 4, a low-frequency unit; 41 a sound guide tube; 5 a low frequency unit; 61 a first cavity; 62 a second cavity; 63 a curved surface spacer plate; 7 a low-frequency cavity; 8, a high-frequency cavity; 9, a medium-frequency cavity; and 10, a four-channel digital power amplifier module.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "left", "right", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which are only for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," "fourth," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Referring to fig. 1 and 2, the embodiment of the utility model discloses a two 12 cun active four divide frequency linear array audio amplifier, including box 1 and locate high frequency unit 2, intermediate frequency unit 3, well low frequency unit 4, low frequency unit 5 in box 1, box 1 includes the installation cavity and locate the low frequency chamber 7 of installation cavity left and right sides respectively, the middle part of installation cavity is equipped with a curved surface baffle 63, curved surface baffle 63 divides the installation cavity into front and back two mutually independent first cavity 61 and second cavity 62, the front end of first cavity 61 is equipped with closely continuous well low frequency unit 4 from left to right in proper order, well low frequency unit 3, high frequency unit 2, intermediate frequency unit 3 and well low frequency unit 4, high frequency unit 2 is established in the middle part of the front end of first cavity 61, intermediate frequency unit 3 and well low frequency unit 4 symmetry formula respectively set up in the both sides of high frequency unit 2; the low-frequency units 5 are respectively arranged at the left side and the right side of the second cavity 62, and the middle part of the rear end of the second cavity 62 is inwards sunken; the intermediate frequency unit 3 is arranged in the intermediate frequency cavity 9, and the high frequency unit 2 is arranged in the high frequency cavity 8.

Specifically, the high-frequency unit 2 includes two high-frequency drivers 21 and two high-pitch horns 22, the two high-pitch horns 22 are respectively installed in the high-frequency cavities 8 which are independent of each other, the high-frequency drivers 21 are respectively installed at the sound diffusion ends of the high-pitch horns 22, and the sound diffusion plates 23 are respectively arranged at the sound diffusion ends of the high-pitch horns 22.

The low frequency unit 5 is 110 cun low frequency unit 5, and well low frequency unit 4 is 1 12 cun speakers, and intermediate frequency unit 3 is 2 6.5 cun speakers that are adjacent to each other, and 2 6.5 cun speakers are installed respectively in mutually independent intermediate frequency cavity 9.

Wherein, the inboard at sunken position is equipped with four-channel digital power amplifier module 10, and four-channel digital power amplifier module 10 embeds there is 1 DSP digital audio processor who advances 4 plays, and four-channel digital power amplifier module 10 respectively with high frequency unit 2, intermediate frequency unit 3, well low frequency unit 4, 5 electric connection of low frequency unit, the utility model discloses two 12 cun active four divide frequency linear array audio amplifier are started by four-channel digital power amplifier module 10 to come the tone quality control as this audio amplifier by DSP digital audio processor, thereby ensure that the audio amplifier reaches best tone quality.

The utility model discloses in the embodiment, provide the high band response through high frequency driver 21 and high pitch horn 22, provide the intermediate frequency range response through 4 6.5 cun speakers, and 12 cun speakers then supplement and the low band response as the intermediate frequency range simultaneously, and 10 cun speakers then supplement as the low band to form a four frequency division system's audio amplifier, sensitivity can reach 110dB, not only has lower low frequency response, has bigger sound pressure level moreover. In particular

The utility model discloses install high pitch horn 22 in high frequency cavity 8, can reduce the vibration of low frequency to high pitch horn 22, influence high pitch horn 22's diffusion when avoiding having external vibration to influence the sound production effect of high frequency channel.

4 6.5 cun speakers are as the intermediate frequency unit, in order to make the utility model discloses a frequency of two 12 cun active four divide-by linear array audio amplifier is more accurate, consequently 6.5 cun speakers only need provide the pronunciation of its front end can, as the intermediate frequency response, consequently only need the sound that 6.5 cun speakers front end sent, and do not need the sound that 6.5 cun speakers rear end sent. Therefore, the utility model discloses install 6.5 cun speakers respectively in mutually independent intermediate frequency cavity 9, let the pronunciation of 6.5 cun speakers can full play its front end, and weaken the pronunciation of 6.5 cun speaker rear end to provide the required intermediate frequency channel of audio amplifier, and then improve the sensitivity of intermediate frequency channel.

The utility model discloses in the embodiment, because 12 cun speakers need compromise well low-frequency range and intermediate frequency range simultaneously, the low frequency of event 12 cun speakers can receive the restriction, consequently the utility model provides a 10 cun speakers can be used for the low frequency to supply to let the audio amplifier have lower low frequency response. Specifically, the pronunciation of the front end of the 10-inch loudspeaker is diffused to the front end of the box body 1 through the low-frequency cavity 7 to supplement the low-frequency lower limit of the 12-inch loudspeaker. In addition, because the front and back ends of the loudspeaker can make sound, if the application does not have a 10-inch loudspeaker, the sound of the 12-inch loudspeaker, the sound of the 6.5-inch loudspeaker and the back end of the high-frequency unit 2 can be diffused to the back part of the sound box at the same time, so that audiences can hear the sound of the main sound box while hearing the sound on the stage, and the auditory effect and the singing effect are influenced. The utility model discloses in the embodiment, install 10 cun speakers in the both sides of second cavity 62, because first cavity 61 and second cavity 62 mutual isolation just form an airtight space separately, consequently under the effect of 10 cun speaker rear end pronunciation, can produce with 12 cun speakers, 6.5 cun speakers and the pronunciation of 2 rear ends of high frequency unit and offset, thereby solved the too big problem of audio amplifier back sound, let 12 cun speakers, 6.5 cun speakers and the pronunciation of high frequency unit 2 can only send forward.

Furthermore, the utility model discloses a 10 cun speakers are placed at the rear portion of box 1, carry out better replenishment through the compression of back chamber with the low frequency section of audio amplifier, by promoting to a preceding one, subduct the rear portion sound of audio amplifier to minimum, and the system reaches bigger sound pressure level and lower low frequency response.

Wherein, be equipped with sound guide tube 41 on the 12 cun speakers for lead the pronunciation at 12 cun speakers rear portion to the front end of 12 cun speakers, superpose with the sound of 12 cun speakers front end, thereby increased the pronunciation efficiency of 12 cun speakers.

Further, the left and right sides of the second cavity 62 are inclined to make the low frequency unit 5 perform sound compression and frequency tuning in a triangular load cavity, so as to obtain higher sound generation efficiency. The low frequency response of the system is supplemented by the amplification towards the centre of the cabinet 1.

Furthermore, the intermediate frequency cavity 9 is a rectangular frame, the 6.5-inch intermediate frequency loudspeaker in the design provides 500Hz to 2000Hz frequency, and only the front sounding of the 6.5-inch loudspeaker is needed to meet the requirement, so each 6.5-inch intermediate frequency loudspeaker is independently placed in a small closed cavity, the smaller the volume of the closed cavity is, the greater the pressure generated in the cavity under the movement of the loudspeaker offsets the rear sounding of the loudspeaker, and the higher the efficiency of the front sounding of the loudspeaker is.

Further, the rectangular frame partially extends into the high-frequency cavity 8, so that the intermediate frequency unit 3 is close to the high-frequency unit 2, 4 loudspeakers of 6.5 inches are close to the high-frequency unit 2, and the distance between every two loudspeakers of 6.5 inches is small, so that the mutual interference among the loudspeakers of 6.5 inches is reduced; the left and right ends of the high pitch diffuser plate 23 block part of the end face of the 6.5 inch speaker, and the sound produced by the front end of the 6.5 inch speaker is emitted from the two sides of the high pitch diffuser plate 23, so that the sound of the 6.5 inch speaker is phase-corrected and compressed, and the sensitivity of the medium frequency is improved. Specifically, the 6.5 inches of speakers symmetrically placed on both sides of the tweeter horn produce phase cancellation on the central axis during sound production, and the phase offset of the 6.5 inches of speakers on both sides on the central axis is changed by using the special shape of the tweeter diffuser plate, so that the speakers on both sides achieve better frequency superposition. The sound diffusing surface is reduced by blocking with a treble diffuser in front of the 6.5 "speaker to improve the performance of the upfread sound for higher sensitivity.

Furthermore, the left and right ends of the high tone diffusion plate 23 are located at the 2/5 end face of the 6.5 inch speaker, so that the middle frequency can be better compressed, and the sound production of the 6.5 inch speaker is not affected.

Specifically, the treble diffuser 23 is configured as shown in fig. 3, a protrusion 231 is disposed in the middle of the treble diffuser 23, the protrusion 231 is mounted on the treble horn 22, and the 6.5 inch speakers are respectively disposed on two sides of the protrusion 231. The utility model discloses in the embodiment, high pitch diffuser plate 23 is only 1, and two high pitch horns 22 are fixed respectively on the bellying 231 of high pitch diffuser plate 23.

Wherein, the diffusion angle of the diffusion plate is 120 degrees, and the sound diffusion range is enlarged. Because the utility model discloses a sound pressure level is enough big already, consequently adopts 120 diffuser plate can carry out wider diffusion to need not adopt other supplementary audio amplifier to carry out the blind spot when using and supply.

Furthermore, the curved partition 63 is gradually bent from two ends to the second cavity 62 to prevent the sound from reflecting and assisting waves, so as to interfere with the sound of the speaker and affect the sensitivity of the speaker. The middle of the rear end of the second cavity 62 is recessed inwards, also to avoid reflection of sound. Moreover, the curved surface partition plate 63 is gradually bent from two ends to the direction of the second cavity 62, the middle part of the rear end of the second cavity 62 is inwards recessed, two 10-inch loudspeakers are respectively provided with a relatively independent cavity, and frequencies above the middle and low frequencies cannot be diffused backwards, so that the problems that the sound at the back of the sound box is too loud and the sound pressure efficiency of the system is not good are solved.

The utility model discloses in the embodiment, adopt ordinary 10 cun, 12 cun, 6.5 cun speakers can realize the frequency response of broad to have higher sensitivity and definition, the cost is lower, can satisfy any big or small indoor performance public address moreover and use.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A double 12-inch active four-frequency-division linear array sound box is characterized by comprising a box body, a high-frequency unit, a medium-frequency unit, a low-frequency unit and a curved surface baffle plate, wherein the high-frequency unit, the medium-frequency unit and the low-frequency unit are arranged in the box body; the low-frequency units are respectively arranged on the left side and the right side of the second cavity, and the middle part of the rear end of the second cavity is inwards sunken; the intermediate frequency unit is arranged in the intermediate frequency cavity.

2. The dual 12-inch active four-quarter linear array loudspeaker box as claimed in claim 1, wherein said high frequency unit includes two high frequency drivers and two high frequency horns, the two high frequency horns are respectively installed in the high frequency cavities independent from each other, the high frequency drivers are respectively installed at the sound diffusing ends of the high frequency horns, and the sound diffusing ends of the high frequency horns are respectively provided with high frequency diffusing plates.

3. The dual 12 inch active quad linear array loudspeaker of claim 2, wherein the low frequency units are 110 inch low frequency unit, the mid-low frequency units are 1 12 inch loudspeaker, the mid-frequency units are 2 adjacent 6.5 inch loudspeakers, and the 2 6.5 inch loudspeakers are respectively mounted in separate mid-frequency cavities.

4. The dual 12 "active quad-frequency linear array loudspeaker of claim 3, wherein the mid-frequency cavity is a rectangular frame having dimensions that match those of a 6.5" speaker.

5. The dual 12-inch active quarter-wave linear array loudspeaker enclosure of claim 4, wherein the rectangular frame extends partially into the high frequency cavity.

6. The dual 12 "active quarter linear array loudspeaker in accordance with claim 3, wherein said mid-range unit is positioned adjacent to said high-range unit, and wherein said treble diffuser plate blocks portions of the end surfaces of said 6.5" speaker.

7. The dual 12 "active quarter linear array loudspeaker as set forth in claim 6, wherein the left and right ends of said treble diffuser are located at the 2/5 ends of said 6.5" speaker.

8. The dual 12-inch active quarter-frequency linear array loudspeaker of claim 1, wherein the curved baffle is gradually curved from both ends toward the second chamber.

9. The dual 12-inch active quarter-wave linear array loudspeaker box of claim 1, wherein the left and right sides of the second cavity are tilted so that the bottom of the low frequency unit faces the center of the mounting cavity.

10. The dual 12-inch active quarter-frequency linear array loudspeaker box according to claim 1, wherein a four-channel digital power amplifier module is disposed inside the recessed portion, a 1-in-4-out DSP digital audio processor is disposed inside the four-channel digital power amplifier module, the four-channel digital power amplifier module is electrically connected to the high frequency unit, the intermediate frequency unit, the medium and low frequency units, and the four-channel digital power amplifier module is activated and used as a timbre control of the loudspeaker box by the DSP digital audio processor.