CN205793233U - A kind of audio amplifier - Google Patents
A kind of audio amplifier Download PDFInfo
- Publication number
- CN205793233U CN205793233U CN201620458236.4U CN201620458236U CN205793233U CN 205793233 U CN205793233 U CN 205793233U CN 201620458236 U CN201620458236 U CN 201620458236U CN 205793233 U CN205793233 U CN 205793233U
- Authority
- CN
- China
- Prior art keywords
- backboard
- plate
- top board
- loudspeaker
- deflector
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Details Of Audible-Bandwidth Transducers (AREA)
Abstract
The utility model discloses a kind of audio amplifier, including casing and loudspeaker unit.Wherein, casing includes top board, left plate, right plate, base plate, backboard and is provided with the fixed block of multiple installation loudspeaker unit before top board, and is provided with deflector that is parallel with backboard and that form spacing between top board with base plate.Top board, left plate, right plate, base plate become semiclosed cavity with backboard week jointly.The first loudspeaker that the fixed block that loudspeaker unit is included in semiclosed cavity is provided with and the second loudspeaker, be provided with the first reinforcing plate between deflector and backboard, is additionally provided with environment friendly acoustical absorption cotton between deflector and backboard.This utility model have eliminate casing resonant reflection sound and can high-fidelity reduction low-and high-frequency reset effect.
Description
Technical field
This utility model relates to a kind of audio amplifier.
Background technology
Current audio amplifier is broadly divided into closed audio amplifier and the big class of phase inverted cabinet two.Closed audio amplifier
The advantages such as structure is relatively simple, and during playback, low-frequency distortion degree is little, and damping is big, but it has simply stopped to raise one's voice
Sound wave interference before and after device cone basin, does not the most make full use of rear sound wave.The inverted phase type designed later
Audio amplifier, ultimate principle is perforate load onto circular phase-reversing tube on the panel of casing, makes the speaker back side
Radiation sound wave anti-phase after radiate, with the sound wave of speaker awl basin head-on radiation superimposed make total
Sound radiation pressure is strengthened, but when the signal frequency reset is the lowest, the air in casing will be from
Phase-reversing tube gushes, thus produces airflow noise, and make the acoustic resistance of box house reduce, speaker awl basin
Oscillation Amplitude strengthen, thus cause the low frequency reproduction lower limit of audio amplifier to promote, the increase of audio distortions degree.
Utility model content
In view of the above problems, the purpose of this utility model is that providing a kind of eliminates casing resonant reflection
Sound and can high-fidelity reduction low-and high-frequency reset audio amplifier.
For achieving the above object, a kind of audio amplifier that this utility model provides, including casing and speaker list
Unit.Wherein, casing includes top board, left plate, right plate, base plate, backboard and sets before top board
Have a fixed block of multiple installation loudspeaker unit, and be provided with between top board with base plate parallel with backboard and
Form the deflector of spacing.Top board, left plate, right plate, base plate become semiclosed with backboard week jointly
Cavity.The first loudspeaker and second that the fixed block that loudspeaker unit is included in semiclosed cavity is provided with
Loudspeaker, are provided with the first reinforcing plate, are additionally provided with between deflector and backboard between deflector and backboard
Environment friendly acoustical absorption is cotton.Thus, efficiently reduce in case interior resonance eliminates case many after adding environment friendly acoustical absorption cotton
Remaining energy.It addition, the frequency response of loudspeaker unit is 66Hz-20KHz (+/-3db), 51Hz (-6db),
40Hz(-10db)。
In some embodiments, it is provided with between fixed block and deflector and strengthens the of casing fastness
Two reinforcing plates.
In some embodiments, the ferrum net of protection loudspeaker unit it is provided with between two fixed blocks.By
This, firm ferrum web frame, except protection speaker, also acts as reinforcement casing front portion structure and reduces resonance
Effect.
This utility model provides the benefit that have elimination casing resonant reflection sound and can high-fidelity
The effect that reduction low-and high-frequency is reset.Owing to the semiclosed cavity (i.e. tuning cavity) in casing is closed
The transient response of reason and the Frequency scope of broadness.It addition, case includes Pilus Caprae seu Ovis environment friendly acoustical absorption cotton effectively
Reduce energy unnecessary in case interior resonance eliminates case.And firm ferrum web frame is raised one's voice except protection
Device, also acts as the effect strengthening casing front portion structure minimizing resonance.Achieve elimination casing resonance anti-
Penetrate sound and can high-fidelity reduction low-and high-frequency reset effect.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Detailed description of the invention
Below in conjunction with the accompanying drawings utility model is described in further detail.
As it is shown in figure 1, a kind of audio amplifier, including casing 1 and loudspeaker unit 2.Casing 1 includes top
Plate 11, left plate 12, right plate, base plate 14, backboard 15 and be above provided with multiple at top board 11
The fixed block 16 of loudspeaker unit 2 is installed, and is provided with and backboard between top board 11 and base plate 14
The 15 parallel and deflectors 17 of formation spacing.Top board 11, left plate 12, right plate, base plate 14
Week common with backboard 15 becomes semiclosed cavity.Loudspeaker unit 2 is included in consolidating in semiclosed cavity
Determine the first loudspeaker 21 and the second loudspeaker 22 that block 16 is provided with, set between deflector 17 and backboard 15
It is equipped with the first reinforcing plate 18, between deflector 17 and backboard 15, is additionally provided with environment friendly acoustical absorption cotton 13.
Energy unnecessary in case interior resonance eliminates case is efficiently reduced after adding environment friendly acoustical absorption cotton 13.It addition,
The frequency response of loudspeaker unit 2 is 66Hz-20KHz (+/-3db), 51Hz (-6db), 40Hz (-10db).
The second reinforcing plate 19 strengthening casing 1 fastness it is provided with between fixed block 16 and deflector 17.Two
The ferrum net of protection loudspeaker unit 2 it is provided with between individual fixed block 16.Firm ferrum web frame is except protecting
Protect speaker, also act as the effect strengthening casing 1 front portion structure minimizing resonance.
During application, the semiclosed cavity (i.e. tuning cavity) in casing 1 obtained rational transient response and
Broad Frequency scope.It addition, case includes in Pilus Caprae seu Ovis environment friendly acoustical absorption cotton 13 effectively reduces case humorous
Shake energy unnecessary in eliminating case.And firm ferrum web frame is except protection speaker, also acts as and adds
Strong casing 1 front portion structure reduces the effect of resonance.Achieve elimination casing resonant reflection sound and can be high
The effect that fidelity reduction low-and high-frequency is reset.
Above-described is only embodiments more of the present utility model.Ordinary skill for this area
For personnel, on the premise of creating design without departing from this utility model, it is also possible to make some deformation
And improvement, these broadly fall into the protection domain of utility model.
Claims (3)
1. an audio amplifier, including casing and loudspeaker unit, it is characterised in that described casing includes top
Plate, left plate, right plate, base plate, backboard and before top board, be provided with consolidating of multiple installation loudspeaker unit
Determine block, and between top board with base plate, be provided with deflector that is parallel with backboard and that form spacing；Described top board,
Left plate, right plate, base plate become semiclosed cavity with backboard week jointly；Described loudspeaker unit is included in
The first loudspeaker that fixed block in semiclosed cavity is provided with and the second loudspeaker；Described deflector and backboard it
Between be provided with the first reinforcing plate；Environment friendly acoustical absorption it is additionally provided with cotton between described deflector and backboard.
A kind of audio amplifier the most according to claim 1, it is characterised in that described fixed block and water conservancy diversion
The second reinforcing plate strengthening casing fastness it is provided with between plate.
A kind of audio amplifier the most according to claim 2, it is characterised in that two described fixed blocks it
Between be provided with protection loudspeaker unit ferrum net.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620458236.4U CN205793233U (en) | 2016-05-19 | 2016-05-19 | A kind of audio amplifier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620458236.4U CN205793233U (en) | 2016-05-19 | 2016-05-19 | A kind of audio amplifier |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205793233U true CN205793233U (en) | 2016-12-07 |
Family
ID=58119418
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620458236.4U Expired - Fee Related CN205793233U (en) | 2016-05-19 | 2016-05-19 | A kind of audio amplifier |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205793233U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019218520A1 (en) * | 2018-05-15 | 2019-11-21 | 上海安费诺永亿通讯电子有限公司 | Speaker box body for reinforcing low frequency |
-
2016
- 2016-05-19 CN CN201620458236.4U patent/CN205793233U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019218520A1 (en) * | 2018-05-15 | 2019-11-21 | 上海安费诺永亿通讯电子有限公司 | Speaker box body for reinforcing low frequency |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161207 Termination date: 20200519 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |