CN204069279U - Digital piano with independent audio amplifier and audio amplifier - Google Patents
Digital piano with independent audio amplifier and audio amplifier Download PDFInfo
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- CN204069279U CN204069279U CN201420360931.8U CN201420360931U CN204069279U CN 204069279 U CN204069279 U CN 204069279U CN 201420360931 U CN201420360931 U CN 201420360931U CN 204069279 U CN204069279 U CN 204069279U
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- audio amplifier
- loudspeaker
- hole
- bass horn
- channel room
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Abstract
The utility model discloses a kind of digital piano with independent audio amplifier and audio amplifier, described audio amplifier comprises the audio amplifier body of hollow structure, first loudspeaker, second loudspeaker, first bass horn, second bass horn, dividing plate is provided with in described audio amplifier body, audio amplifier body is separated into L channel room by this dividing plate, R channel room, the front end face of described L channel room is provided with the first loudspeaker through hole, first bass horn through hole, the front end face of described R channel room is provided with the second loudspeaker through hole, second bass horn through hole, described first loudspeaker is arranged in the first loudspeaker through hole, described first bass horn is arranged in the first bass horn through hole, described second loudspeaker is arranged in the second loudspeaker through hole, described second bass horn is arranged in the second bass horn through hole.The digital piano of the independent audio amplifier of described band and audio amplifier, acoustic radiating direction is blocked without any, improves sound radiation pressure, enhances sound field range, and acoustic efficiency is good.
Description
Technical field
The utility model relates to piano technical field, particularly a kind of digital piano with independent audio amplifier and audio amplifier.
Background technology
Loud speaker is directly installed on and arranges in the same qin case of keyboard by traditional digital piano usually, namely left and right acoustic channels loud speaker be arranged on same larger, in unsealed resonating body, sound field range and the audio of left and right acoustic channels can not be given full expression to; Or be combined with pedal shelves by audio amplifier and arrange, easily like this cause resonance, produce noise, and loudspeaker sound out points to mid-game, according to the feature of high pitch directive property, reflected back by mid-game again after being sent to mid-game after loudspeaker sounding, acoustic efficiency is poor.
Summary of the invention
Based on this, the purpose of this utility model is the defect overcoming prior art, provides the audio amplifier of the digital piano that a kind of acoustic efficiency is good.
Its technical scheme is as follows:
A kind of audio amplifier, comprise the audio amplifier body of hollow structure, first loudspeaker, second loudspeaker, first bass horn, second bass horn, dividing plate is provided with in described audio amplifier body, audio amplifier body is separated into L channel room by this dividing plate, R channel room, the front end face of described L channel room is provided with the first loudspeaker through hole, first bass horn through hole, the front end face of described R channel room is provided with the second loudspeaker through hole, second bass horn through hole, described first loudspeaker is arranged in the first loudspeaker through hole, described first bass horn is arranged in the first bass horn through hole, described second loudspeaker is arranged in the second loudspeaker through hole, described second bass horn is arranged in the second bass horn through hole.
Its further technical characteristic is as follows:
Described L channel room and R channel room are arranged symmetrically with dividing plate, and described first loudspeaker and the second loudspeaker are arranged symmetrically with dividing plate, and described first bass horn and the second bass horn are arranged symmetrically with dividing plate.
Relatively described first bass horn of described first loudspeaker, the second loudspeaker, the second bass horn are closer to described dividing plate.
Described audio amplifier also comprises the first phase-reversing tube, the second phase-reversing tube, the outer wall of described L channel room is provided with the first paraphase through hole, the outer wall of described R channel room is provided with the second paraphase through hole, described first phase-reversing tube is arranged in the first paraphase through hole, and described second phase-reversing tube is arranged in the second paraphase through hole.
Described first paraphase through hole is arranged on the upper surface of L channel room, and described second paraphase through hole is arranged on the upper surface of R channel room.
Described L channel room, R channel indoor are provided with acoustical cotton.
The utility model additionally provides a kind of digital piano with independent audio amplifier, and its audio amplifier effectively can be avoided when the digital piano of the independent audio amplifier of this band uses to vibrate and produce resonance with pedal shelves, acoustic efficiency is good.
With a digital piano for independent audio amplifier, comprise above-mentioned audio amplifier, piano body, described piano body upper part is provided with key case, and described audio amplifier is arranged on the below of key case.
Below the advantage of preceding solution or principle are described:
Above-mentioned audio amplifier, structure is simple, by arranging dividing plate, audio amplifier body is separated into L channel room, R channel room, and the first loudspeaker, the first bass horn are arranged on the front end face of L channel room, the second loudspeaker, the second bass horn are arranged on the front end face of R channel room, acoustic radiating direction is blocked without any, improve sound radiation pressure, enhance sound field range, acoustic efficiency is good.
The digital piano of the independent audio amplifier of above-mentioned band, by audio amplifier being arranged on the below of key case, audio amplifier is independently arranged, the vibration produced when can effectively avoid audio amplifier to use produces resonance with pedal shelves, avoid producing noise, and first loudspeaker, the first bass horn are arranged on the front end face of L channel room, second loudspeaker, the second bass horn are arranged on the front end face of R channel room, first loudspeaker, the second loudspeaker, the first bass horn, second bass horn sound is out without any stop, and acoustic efficiency is good.
Accompanying drawing explanation
Fig. 1 is the structural representation of the audio amplifier body described in the utility model embodiment;
Fig. 2 is the structural representation of the audio amplifier body of the dismounting front end face described in the utility model embodiment.
Description of reference numerals:
100, audio amplifier body, 110, dividing plate, 120, L channel room, the 122, first loudspeaker through hole, 124, the first bass horn through hole, the 126, first paraphase through hole, 130, R channel room, 132, the second loudspeaker through hole, the 134, second bass horn through hole, the 136, second paraphase through hole.
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is described in detail:
As shown in Figure 1, a kind of audio amplifier, comprise the audio amplifier body 100 of hollow structure, first loudspeaker, second loudspeaker, first bass horn, second bass horn, dividing plate 110 is provided with in described audio amplifier body 100, audio amplifier body 100 is separated into L channel room 120 by this dividing plate 110, R channel room 130, the front end face of described L channel room 120 is provided with the first loudspeaker through hole 122, first bass horn through hole 124, the front end face of described R channel room 130 is provided with the second loudspeaker through hole 132, second bass horn through hole 134, described first loudspeaker is arranged in the first loudspeaker through hole 122, described first bass horn is arranged in the first bass horn through hole 124, described second loudspeaker is arranged in the second loudspeaker through hole 132, described second bass horn is arranged in the second bass horn through hole 134.In the present embodiment, when the player that described front end face refers to normally plays, towards the one side of player.
Audio amplifier described in the present embodiment, structure is simple, by arranging dividing plate 110, audio amplifier body 100 is separated into L channel room 120, R channel room 130, and the first loudspeaker, the first bass horn are arranged on the front end face of L channel room 120, the second loudspeaker, the second bass horn are arranged on the front end face of R channel room 130, acoustic radiating direction is blocked without any, improve sound radiation pressure, enhance sound field range, acoustic efficiency is good.
Described L channel room 120 is arranged symmetrically with dividing plate 110 with R channel room 130, and described first loudspeaker and the second loudspeaker are arranged symmetrically with dividing plate 110, and described first bass horn and the second bass horn are arranged symmetrically with dividing plate 110.So not only make L channel room 120 be consistent with the volume in R channel room 130, and the sound symmetric radiation that both sides loudspeaker are sent out, kept in balance with the audio of R channel room 130 in L channel room 120.
Relatively described first bass horn of described first loudspeaker, the second loudspeaker, the second bass horn are closer to described dividing plate 110.Make the distance between the first bass horn and the second bass horn maximum like this, bass effect can be strengthened further, play the range of sound field.
Described audio amplifier also comprises the first phase-reversing tube, the second phase-reversing tube, the outer wall of described L channel room 120 is provided with the first paraphase through hole 126, the outer wall of described R channel room 130 is provided with the second paraphase through hole 136, described first phase-reversing tube is arranged in the first paraphase through hole 126, and described second phase-reversing tube is arranged in the second paraphase through hole 136.By arranging the first phase-reversing tube, the second phase-reversing tube, the acoustic phase of the first loudspeaker, the first bass horn, the second loudspeaker, the second bass horn back side radiant is reversed, make the first loudspeaker, the first bass horn, the second loudspeaker, the sound wave of the second bass horn back side radiant superposes with head-on radiation sound wave, audio amplifier tonequality is improved.Described in the present embodiment, the first paraphase through hole 126 is arranged on the upper surface of L channel room 120, and described second paraphase through hole 136 is arranged on the upper surface of R channel room 130.
Acoustical cotton is provided with in described L channel room 120, R channel room 130.By arranging acoustical cotton, effectively can slacken standing wave, avoiding sound muddy, and the velocity of sound that can slow down, play the effect increasing L channel room 120, R channel room 130 internal volume.
The present embodiment additionally provides a kind of digital piano with independent audio amplifier, comprises above-mentioned audio amplifier, piano body, and described piano body upper part is provided with key case, and described audio amplifier is arranged on the below of key case.
Digital piano with independent audio amplifier described in the present embodiment, by audio amplifier being arranged on the below of key case, audio amplifier is independently arranged, the vibration produced when can effectively avoid audio amplifier to use produces resonance with pedal shelves, avoid producing noise, and first loudspeaker, the first bass horn are arranged on the front end face of L channel room 120, second loudspeaker, the second bass horn are arranged on the front end face of R channel room 130, first loudspeaker, the second loudspeaker, the first bass horn, second bass horn sound is out without any stop, and acoustic efficiency is good.
The above embodiment only have expressed embodiment of the present utility model, and it describes comparatively concrete and detailed, but therefore can not be interpreted as the restriction to the utility model the scope of the claims.It should be pointed out that for the person of ordinary skill of the art, without departing from the concept of the premise utility, can also make some distortion and improvement, these all belong to protection range of the present utility model.
Claims (7)
1. an audio amplifier, it is characterized in that, comprise the audio amplifier body of hollow structure, first loudspeaker, second loudspeaker, first bass horn, second bass horn, dividing plate is provided with in described audio amplifier body, audio amplifier body is separated into L channel room by this dividing plate, R channel room, the front end face of described L channel room is provided with the first loudspeaker through hole, first bass horn through hole, the front end face of described R channel room is provided with the second loudspeaker through hole, second bass horn through hole, described first loudspeaker is arranged in the first loudspeaker through hole, described first bass horn is arranged in the first bass horn through hole, described second loudspeaker is arranged in the second loudspeaker through hole, described second bass horn is arranged in the second bass horn through hole.
2. audio amplifier according to claim 1, it is characterized in that, described L channel room and R channel room are arranged symmetrically with dividing plate, and described first loudspeaker and the second loudspeaker are arranged symmetrically with dividing plate, and described first bass horn and the second bass horn are arranged symmetrically with dividing plate.
3. audio amplifier according to claim 2, is characterized in that, relatively described first bass horn of described first loudspeaker, the second loudspeaker, the second bass horn are closer to described dividing plate.
4. audio amplifier according to claim 3, it is characterized in that, it also comprises the first phase-reversing tube, the second phase-reversing tube, the outer wall of described L channel room is provided with the first paraphase through hole, the outer wall of described R channel room is provided with the second paraphase through hole, described first phase-reversing tube is arranged in the first paraphase through hole, and described second phase-reversing tube is arranged in the second paraphase through hole.
5. audio amplifier according to claim 4, is characterized in that, described first paraphase through hole is arranged on the upper surface of L channel room, and described second paraphase through hole is arranged on the upper surface of R channel room.
6. the audio amplifier according to any one of Claims 1 to 5, is characterized in that, described L channel room, R channel indoor are provided with acoustical cotton.
7. be with a digital piano for independent audio amplifier, it is characterized in that, comprise the audio amplifier described in any one of claim 1 ~ 6, piano body, described piano body upper part is provided with key case, and described audio amplifier is arranged on the below of key case.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420360931.8U CN204069279U (en) | 2014-06-30 | 2014-06-30 | Digital piano with independent audio amplifier and audio amplifier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420360931.8U CN204069279U (en) | 2014-06-30 | 2014-06-30 | Digital piano with independent audio amplifier and audio amplifier |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204069279U true CN204069279U (en) | 2014-12-31 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420360931.8U Active CN204069279U (en) | 2014-06-30 | 2014-06-30 | Digital piano with independent audio amplifier and audio amplifier |
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| Country | Link |
|---|---|
| CN (1) | CN204069279U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109379648A (en) * | 2018-10-09 | 2019-02-22 | 湖南捷创新材料有限公司 | A kind of blow molding integrated molding loudspeaker box structure |
-
2014
- 2014-06-30 CN CN201420360931.8U patent/CN204069279U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109379648A (en) * | 2018-10-09 | 2019-02-22 | 湖南捷创新材料有限公司 | A kind of blow molding integrated molding loudspeaker box structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 511338 Guangzhou, Guangzhou City, Guangdong Province, Zengcheng District Economic and Technological Development Zone, Xiangshan Road No. 38, No. 1, floor two or three and four Patentee after: Guangzhou Pearl River Amason digital instrument Limited by Share Ltd Address before: 510000, No. 223 middle two, Liwan District bridge, Guangzhou, Guangdong Patentee before: Guangzhou Amason Electronic Co., Ltd. |