CN206294305U - A kind of tubular audio amplifier - Google Patents
A kind of tubular audio amplifier Download PDFInfo
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- CN206294305U CN206294305U CN201621398044.5U CN201621398044U CN206294305U CN 206294305 U CN206294305 U CN 206294305U CN 201621398044 U CN201621398044 U CN 201621398044U CN 206294305 U CN206294305 U CN 206294305U
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- bass
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- tubular
- phonocatheter
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Abstract
The utility model is related to sound system audio amplifier, specifically a kind of tubular audio amplifier, the tubular casing of the tubular audio amplifier is strip tubular structure, tubular casing is divided into the big casing of bass and is embedded in the bass small box of the big box house of bass, the tank wall of the big casing of bass is provided with the outlet of the first bass, and the first phonocatheter that the big box house of bass is connected with extraneous listening volume is connected with the outlet of the first bass；Bass small box inside is connected by the second phonocatheter with extraneous listening volume, and the second phonocatheter is connected with the second bass outlet being opened on the big casing of bass or bass small box, and woofer is provided with the small box tank wall of bass small box；Medium and high pitch loudspeaker is installed in the big casing of bass.The utility model makes bass effect obtain strong lifting, and alt becomes apparent from interesting to listen to, and such column lands integration operation home theater, and tonequality is good, compact, attractive in appearance, it is easy to put, widely used.
Description
Technical field
The utility model is related to sound system audio amplifier, specifically a kind of tubular audio amplifier.
Background technology
With the development in epoch, the progress of technology, people are more next to the diversity of the broadcasting audio amplifier of sound equipment and tonequality requirement
It is higher.People have gone out bass box (also known as subwoofer) with current prior art development and production, in Fujian science tech publishing house in
What in July, 2008 published《Loudspeaker and audio amplifier design manual》In, disclose closed audio amplifier (page 60~67), open type audio amplifier
(page 67~77), passive radiation audio amplifier (page 77~78).And for example shown in Figure 1A, Figure 1B, existing its bass loudspeaker of tubular audio amplifier
Device 9 is arranged at one end of tubular casing 1, and (i.e. the first bass is exported to be provided only with a bass sound mouthful in the other end of tubular casing 1
5) first phonocatheter 6, is installed in first bass outlet 5, for the inside of tubular casing 1 to be communicated with extraneous listening volume.
These existing audio amplifiers, or being too big volume, quality is too poor；Although volume does small, but bass reproduction effect again not
It is good.
Utility model content
In order to solve the problems, such as that the existing audio amplifier tonequality that especially tubular audio amplifier is present is bad and volume is too big, this practicality is new
The purpose of type is to provide a kind of tubular audio amplifier of new physical acoustics structure.
The purpose of this utility model is achieved through the following technical solutions：
The tubular casing of the utility model tubular audio amplifier is strip tubular structure, and the tubular casing is divided into the big case of bass
Body and the bass small box of the big box house of the bass is embedded in, the tank wall of the big casing of bass is provided with the first bass and goes out
Mouthful, first that the big box house of the bass is connected with extraneous listening volume is connected with first bass outlet and leads sound
Pipe；Bass small box inside is connected by the second phonocatheter with external world's listening volume, second phonocatheter be opened in
The second bass outlet on the big casing of bass or bass small box is connected, and is set on the small box tank wall of the bass small box
There is woofer；Medium and high pitch loudspeaker is installed in the big casing of bass；
Wherein：Bottom when the tubular casing is put is provided with base, between the bottom of the base and the tubular casing
It is connected by casing leg, the tubular casing between the casing leg and base by forming the air gap；Described first is low
Sound outlet is opened in bottom when tubular casing is put, on the bottom surface tank wall of the i.e. described big casing of bass, or is opened in tubular case
Side wall when body is put, i.e., on the side tank wall of the described big casing of bass；
The length direction of first phonocatheter is parallel with the length direction of tubular casing, and first phonocatheter is low with first
One end end face of sound outlet connection and the bottom surface tank wall of the big casing of the bass are coplanar；The length direction of second phonocatheter with
The length direction of the first phonocatheter is perpendicular；The side in the first phonocatheter length direction section and the big casing length side of bass
Homonymy to section is coplanar；
The length direction of first phonocatheter is vertical with the length direction of tubular casing, and with second phonocatheter
Length direction is parallel；Second phonocatheter is L-shaped, and a line for being somebody's turn to do " L " shape is connected with second bass outlet, described
The another a line of " L " shape is parallel with the length direction of tubular casing；Independent alt case is additionally provided with the big casing of bass
Body, the medium and high pitch loudspeaker is arranged in this between height in casing；
The medium and high pitch loudspeaker is one or many full frequency speaker unit compositions, is constituted when by many loudspeaker units
When, all loudspeaker units are electroacoustic and are connected together, and the loudspeaker unit of the medium and high pitch loudspeaker is raised with the bass
The loudspeaker unit of sound device is also that electroacoustic is same to be connected；The woofer is that one or many loudspeaker units are constituted, when
When being made up of many loudspeaker units, it is correspondingly arranged relatively in pairs, and all loudspeaker units are electroacoustic and are connected together.
Advantage of the present utility model is with good effect：
1. tubular casing of the present utility model, make use of the tubular box shape of the first phonocatheter and strip, make bass
Sound wave produces resonance in the first phonocatheter and strip tubular casing, so that bass is strengthened.
2. it is of the present utility model that the air gap, that is, formation sound are formed by casing leg between tubular casing and base
Air cushion is learned, equal to increased an extra bass cavity, the effect that bass sound wave passes through this acoustics air cushion can more thicken
Heavy, dive is deeper, elasticity is stronger.
3. woofer unit of the present utility model is symmetrical arranged, and diaphragm oscillations are in opposite direction, and Oscillation Amplitude is equal, shakes
Power is cancelled out each other, and drastically reduce the area the mechanical oscillation of audio amplifier.
4. the utility model use slender tubular casing, it is possible to achieve small volume, it is lightweight, be particularly suited for manufacturing
Ground formula sound column.
5. the utility model can make the size of woofer significantly diminish under the premise of bass effect is ensured.
6. the utility model is provided with medium and high pitch loudspeaker, such that it is able to play alt well.
7. column audio amplifier of the utility model with base is easy to put, and is capable of achieving multiple use.
8. low cost of the present utility model, and easily making, audio amplifier is elegant in appearance, it is easy to appearance design.
Brief description of the drawings
Figure 1A is the structural front view of existing tubular audio amplifier；
Figure 1B is the left view of Figure 1A；
Fig. 2A is the front sectional view of the utility model embodiment one；
Fig. 2 B are the left view sectional view of Fig. 2A；
Fig. 3 A are the front sectional view of the utility model embodiment two；
Fig. 3 B are the left view sectional view of Fig. 3 A；
Fig. 4 A are the front sectional view of the utility model embodiment three；
Fig. 4 B are the left view sectional view of Fig. 4 A；
Fig. 5 A are the front sectional view of the utility model example IV；
Fig. 5 B are the left view sectional view of Fig. 5 A；
Fig. 6 A are the front sectional view of the utility model embodiment five；
Fig. 6 B are the left view sectional view of Fig. 6 A；
Fig. 7 A are the front sectional view of the utility model embodiment six；
Fig. 7 B are the left view sectional view of Fig. 7 A；
Fig. 8 A are the front sectional view of the utility model embodiment seven；
Fig. 8 B are the left view sectional view of Fig. 8 A；
Fig. 9 A are the front sectional view of the utility model embodiment eight；
Fig. 9 B are the left view sectional view of Fig. 9 A；
Figure 10 A are the front sectional view of the utility model embodiment nine；
Figure 10 B are the left view sectional view of Figure 10 A；
Figure 11 A are the front sectional view of the utility model embodiment ten；
Figure 11 B are the left view sectional view of Figure 11 A；
Wherein：1 is tubular casing, and 2 is the big casing of bass, and 3 is bass small box, and 4 is small box tank wall, and 5 is first low
Sound is exported, and 6 is the first phonocatheter, and 7 export for the second bass, and 8 is the second phonocatheter, and 9 is woofer, and 10 is base, 11
It is casing leg, 12 is medium and high pitch loudspeaker, and 13 is alt casing.
Specific embodiment
The utility model is described in further detail below in conjunction with the accompanying drawings.
The tubular casing 1 of the utility model tubular audio amplifier is strip tubular structure, and the inside of the tubular casing 1 is divided into low
The big casing 2 of sound and the bass small box 3 being embedded in inside the big casing 2 of the bass, bottom when tubular casing 1 is put is provided with casing
Leg 11, can be provided with base 10 on the casing leg 11, the phase of casing leg 11 is passed through between base 10 and the bottom of tubular casing 1
Even, tubular casing 1 between the casing leg 11 and base 10 by forming the air gap.
The tank wall of the big casing 2 of bass is provided with the first bass outlet 5, is connected with first bass outlet 5 bass is big
The first phonocatheter 6 that the inside of casing 2 is connected with extraneous listening volume.When first bass outlet 5 is opened in tubular casing 1 and puts
The big casing 2 of bottom, i.e. bass bottom surface tank wall on, or be opened in the big casing 2 of side wall when tubular casing 1 is put, i.e. bass
Side tank wall on.When the first bass outlet 5 is opened in the bottom of tubular casing 1, the length direction and cylinder of the first phonocatheter 6
The length direction of shape casing 1 is parallel, one end end face and the big casing 2 of bass that first phonocatheter 6 is connected with the first bass outlet 5
Bottom surface tank wall it is coplanar, the side in the length direction section of the first phonocatheter 6 and the homonymy in the big length direction section of casing 2 of bass can
It is coplanar；The length direction of the second phonocatheter 8 is perpendicular with the length direction of the first phonocatheter 6.When the first bass outlet 5 is opened in
During the side wall of tubular casing 1, the length direction of the first phonocatheter 6 is vertical with the length direction of tubular casing 1, and leads sound with second
The length direction of pipe 6 is parallel.Second phonocatheter 6, can also be L-shaped in addition to for column, is somebody's turn to do a line and the second bass of " L " shape
Outlet 7 is connected, and the another a line of " L " shape is parallel with the length direction of tubular casing 1.
The inside of bass small box 3 is connected by the second phonocatheter 8 with external world's listening volume, second phonocatheter 8 with open
The second bass outlet 7 on the big casing 2 of bass or bass small box 3 is connected, in the small box tank wall 4 of bass small box 3
On be provided with woofer 9.Woofer 9 is one or many loudspeaker unit compositions, when by many loudspeaker units
During composition, it is correspondingly arranged relatively in pairs, and all loudspeaker units are electroacoustic and are connected together.
Medium and high pitch loudspeaker 12 is also equipped with the big casing 2 of bass, the medium and high pitch loudspeaker 12 can be directly mounted at bass
In big casing 2, an independent alt casing 13 can be also set in the big casing 2 of bass, medium and high pitch loudspeaker 12 is arranged on this
Between middle height in casing 13.Medium and high pitch loudspeaker 12 is one or many full frequency speaker unit compositions, when by many loudspeaker lists
During unit's composition, all loudspeaker units are electroacoustic and are connected together, and the loudspeaker unit of medium and high pitch loudspeaker 12 is raised with bass
The loudspeaker unit of sound device 9 is also that electroacoustic is same to be connected.
Embodiment one
As shown in Fig. 2A, Fig. 2 B, the present embodiment tubular casing 1 is that cylindric, radial section is circular, a diameter of 200mm,
A height of 600mm；Correspondingly, base 10 is also annular shape.Bottom of the tubular casing 1 when putting is provided with casing leg 11, uses
To realize the mechanical connection of tubular casing 1 and base 10, and the air gap is formed between tubular casing 1 and base 10；This
Gap size can be 2mm~50mm, and the present embodiment is 10mm.Top when being put inside tubular casing 1, is provided with middle height
Sound loudspeaker 12, the casing for installing medium and high pitch loudspeaker 12 can be separate with the big casing 2 of bass, or share
's；The casing that the present embodiment installs medium and high pitch loudspeaker 12 is independent, i.e., tubular casing 1 is divided into separate bass
Big casing 2,13 3 casings of bass small box 3 and alt casing.Medium and high pitch loudspeaker 12 can be raised one's voice by 1~8 full range
Device unit or high pitch loudspeaker unit are constituted, and the present embodiment is made up of the full frequency speaker unit of 4 diameter 52mm, and they are successively
It is equidistantly disposed in an independent alt casing 13, and these loudspeaker units electroacoustic will be connected together mutually.
Bass small box 3 is embedded in inside the big casing 2 of bass, and the present embodiment bass small box 3 is grown positioned at the big casing 2 of bass
The centre in direction is spent, the side of the axial cross section of bass small box 3 is coplanar with the homonymy of the big axial cross section of casing 2 of bass.In tubular
Bottom (i.e. the bottom surface tank wall of the big casing 2 of bass) when casing 1 is put is provided with the first bass outlet 5, one end of the first phonocatheter 6
5 be connected with the outlet of the first bass, the other end is free end, in the big casing 2 of bass, by the big casing 2 of bass and audition ring
Border air is connected；The length direction of first phonocatheter 6 of the present embodiment is parallel with the length direction of tubular casing 1.This implementation
The second bass outlet 7 of example is opened in the big casing 2 of bass and the coplanar tank wall of bass small box 3 (i.e. the side wall of tubular casing 1)
On, the second phonocatheter 8 is integrally located in bass small box 3, and one end is connected with the second bass outlet 7, and the other end is free end, will
Bass small box 3 is connected with acoustic surrounding air.Woofer 9 is arranged on small box tank wall 4, and woofer 9 can
Constituted with by 1~6 woofer unit, when being constituted for many woofer units, all woofer units
Will electroacoustic with being connected.Two woofer units of identical φ 133mm of the woofer 9 of the present embodiment,
This two woofer units are arranged in correspondence with upper and lower two small box tank wall 4 when tubular casing 1 is put.
Tubular casing 1 can make of plastic cement or metal pipe material, it is also possible to the system such as timber, plastic sheet, sheet metal
Make, or made of the method for die sinking injection.First and second phonocatheter 6,8 can make of plastic cement or paper tube material metal pipe material,
Can be made of the method for die sinking injection, the phonocatheter 6,8 of tubular casing 1 and first and second of the present embodiment is of die sinking injection
Method makes.Casing leg 11 and base 10 can make of metal, it is also possible to use plastic cement, timber etc. to make, the present embodiment is equal
Made of plastic cement.
Embodiment two
As shown in Fig. 3 A, Fig. 3 B, the present embodiment is with the difference of embodiment one：The bass small box of the present embodiment 3
In the middle and upper part of the big length direction of casing 2 of bass, cancel alt casing 13, medium and high pitch loudspeaker 12 is directly arranged at bass
In big casing 2.The side of the axial cross section of the first phonocatheter 6 of the present embodiment is coplanar with the homonymy of the axial cross section of tubular casing 1.Its
Yu Jun and embodiment one are identical.
Embodiment three
As shown in Fig. 4 A, Fig. 4 B, the present embodiment is with the difference of embodiment one：The radial direction of the present embodiment tubular casing 1
Section is square；Correspondingly, base 10 is also square ring.Two woofer units of woofer 9 are constituted, sequentially
Correspondence it is (i.e. symmetrical) installed in tubular casing 1 put when be arranged in correspondence with upper and lower two small box tank wall 4；Here two are low
Sound loudspeaker unit must electroacoustic it is anti-phase, i.e., their vibrating diaphragm will simultaneously to the internal vibration of bass small box 3 or simultaneously to bass
The big internal vibration of casing 2.In addition, the side of the axial cross section of the first phonocatheter 6 of the present embodiment is same with the axial cross section of tubular casing 1
Side is coplanar.Remaining is and embodiment one is identical.
Example IV
As shown in Fig. 5 A, Fig. 5 B, the present embodiment is with the difference of embodiment one：The radial direction of the present embodiment tubular casing 1
Section is trapezoidal；Correspondingly, base 10 is also trapezoidal ring-type.The side of the axial cross section of the first phonocatheter 6 is with tubular casing 1 axially
The homonymy in section is coplanar.Remaining is and embodiment one is identical.
Embodiment five
As shown in Fig. 6 A, Fig. 6 B, the present embodiment is with the difference of embodiment one：The tubular casing 1 of the present embodiment is in pendulum
Bottom when putting is provided only with casing leg 11, and without base 10；When putting, casing leg 1 is directly placed to be put in plane.Separately
Outward, the side of the axial cross section of the first phonocatheter 6 of the present embodiment is coplanar with the homonymy of the axial cross section of tubular casing 1.Remaining and
Embodiment one is identical.
Embodiment six
As shown in Figure 7 A, 7 B, the present embodiment is with the difference of embodiment one：The woofer 9 of the present embodiment is simultaneously
Row is arranged on small box tank wall 4, installs the length direction of the small box tank wall of woofer 9 and the length of tubular casing 1
Direction is parallel.Remaining is and embodiment one is identical.
Embodiment seven
As shown in Fig. 8 A, Fig. 8 B, the present embodiment is with the difference of embodiment six：The woofer 9 of the present embodiment by
Three woofer unit compositions, installation direction is differed and althoughs note that electroacoustic polarity, the vibrating diaphragm of all woofer units
It is both and is vibrated to a direction, i.e., whole vibrating diaphragms is simultaneously to the internal vibration of bass small box 3；Three bass loudspeakers of the present embodiment
Device unit except have two it is identical with embodiment six, be mounted side by side on small box tank wall 4 towards the side of bass small box 3, the 3rd
Woofer unit is arranged on opposite side of the small box tank wall 4 towards the big casing 2 of bass, and in other two
Between.Remaining is and embodiment six is identical.
Embodiment eight
As shown in Fig. 9 A, Fig. 9 B, the present embodiment is with the difference of embodiment one：The bass small box 3 of the present embodiment
Length is identical with the length of the big casing 2 of bass, and two of composition woofer 9 are mounted side by side on small box tank wall 4, are installed
The length direction of the small box tank wall of woofer 9 is parallel with the length direction of tubular casing 1.In addition, the of the present embodiment
Two phonocatheters 8 are " L " shape, and a line for being somebody's turn to do " L " shape is connected with the second bass outlet 7, the another a line and tubular casing of " L " shape
1 length direction is parallel.Remaining is and embodiment one is identical.
Embodiment nine
As shown in Figure 10 A, Figure 10 B, the present embodiment is with the difference of embodiment five：The first bass outlet of the present embodiment
5 are opened on the side wall of tubular casing 1, and the length direction of the first phonocatheter 6 is vertical with the length direction of tubular casing 1, and
Length direction with the second phonocatheter 8 is parallel.Remaining is and embodiment five is identical.
Embodiment ten
As shown in Figure 11 A, Figure 11 B, the present embodiment is with the difference of embodiment one：The present embodiment is without the He of casing leg 11
Base 10, medium and high pitch loudspeaker 12 is two, is symmetrically mounted on two relative end faces of tubular casing 1；And, the present embodiment
Alt casing 13 is eliminated, directly two medium and high pitch loudspeakers 12 are arranged in the big casing 2 of bass.
Operation principle of the present utility model is：
When the low frequency power of audio frequency power amplifier output puts on woofer 9, woofer 9 completes electroacoustic conversion.
When each woofer unit vibrating diaphragm of woofer 9 vibrates to the direction of bass small box 3, bass small box is just have compressed
Air in 3, the atmospheric pressure in bass small box 3 is more than ambient air pressure, and air leads sound from bass small box 3 through second
The bass of pipe 8 and second outlet 7 is transferred to ambient air, and this just forms the first bass information stream.Meanwhile, in the big casing 2 of bass
Atmospheric pressure is less than ambient air pressure, and the clearance air between the first bass outlet 5 and base 10 goes out through the first bass
The phonocatheter 6 of mouth 5 and first, flow in the big casing 2 of bass, forms the second bass information stream.Conversely, when woofer 9
When each woofer unit vibrating diaphragm vibrates to the big direction of casing 2 of bass, first and second bass information stream is formd again, this
First, two bass information streams complete superposition by resonance, and bass is significantly greatly increased.Meanwhile, in first and second bass information stream
Flowing in, it is impossible to be directly realized by and exchanged with ambient air, but will be by between the top of tubular casing 1 and base 10
Gap, this just forms an aeroacoustics air cushion again, equal to virtually increased a bass cavity again, so that bass is imitated
Fruit further enhances, and can thus obtain thick and heavy, shock, the bass of high resilience.And alt is by another positioned at tubular casing 1
The direct radiation of medium and high pitch loudspeaker 12 of one end can thus obtain limpid, resolution alt high to listening volume, this
Sample is achieved that the gamut Hi―quality Playback of bass middle pitch high pitch.
The utility model using double casings, the outlet of double basses, double phonocatheters and double is raised one's voice again using the slender casing of tubular
Device structure, and in tubular casing, acoustics air cushion is devised between end face and base, while the top when tubular casing 1 is put
End is provided with least one full frequency speaker unit of alt direct radiation, can thus produce basic, normal, high sound and play effect
It is really good, and be easy to put, multiduty column audio amplifier.
Claims (10)
1. a kind of tubular audio amplifier, it is characterised in that：The tubular casing (1) of the tubular audio amplifier is strip tubular structure, the cylinder
Shape casing (1) is divided into the big casing of bass (2) and is embedded in the internal bass small box (3) of the big casing of bass (2), the bass
The tank wall of big casing (2) is provided with the first bass outlet (5), is connected with the big case of the bass on first bass outlet (5)
Internal the first phonocatheter (6) being connected with extraneous listening volume of body (2)；Led by second inside the bass small box (3)
Sound pipe (8) is connected with extraneous listening volume, second phonocatheter (8) be opened in the big casing of bass (2) or bass small box
(3) the second bass outlet (7) on is connected, and bass loudspeaker is provided with the small box tank wall (4) of the bass small box (3)
Device (9)；Medium and high pitch loudspeaker (12) is installed in the big casing of bass (2).
2. the tubular audio amplifier as described in claim 1, it is characterised in that：Bottom when the tubular casing (1) is put is provided with bottom
Seat (10), is connected between the base (10) and the bottom of the tubular casing (1) by casing leg (11), the tubular casing
(1) the air gap is formed by between the casing leg (11) and base (10).
3. the tubular audio amplifier as described in claim 2, it is characterised in that：First bass outlet (5) is opened in tubular casing
(1) on the bottom, the bottom surface tank wall of the i.e. described big casing of bass (2) when putting, or it is opened in side when tubular casing (1) is put
Wall, i.e., on the side tank wall of the described big casing of bass (2).
4. the tubular audio amplifier as described in claim 1, it is characterised in that：The length direction and tubular of first phonocatheter (6)
The length direction of casing (1) is parallel, one end end face that first phonocatheter (6) and the first bass outlet (5) are connected and described low
The bottom surface tank wall of the big casing of sound (2) is coplanar；The length direction of second phonocatheter (8) and the length side of the first phonocatheter (6)
To perpendicular.
5. the tubular audio amplifier as described in claim 4, it is characterised in that：The one of first phonocatheter (6) the length direction section
Side is coplanar with the homonymy in bass big casing (2) length direction section.
6. the tubular audio amplifier as described in claim 1, it is characterised in that：The length direction and tubular of first phonocatheter (6)
The length direction of casing (1) is vertical, and parallel with the length direction of second phonocatheter (6).
7. the tubular audio amplifier as described in claim 1, it is characterised in that：Second phonocatheter (6) is L-shaped, is somebody's turn to do " L " shape
A line exports (7) and is connected with second bass, and the another a line of " L " shape is put down with the length direction of tubular casing (1)
OK.
8. the tubular audio amplifier as described in claim 1, it is characterised in that：Be additionally provided with the big casing of bass (2) it is independent in
Sound box bodies (13) high, the medium and high pitch loudspeaker (12) is arranged in this between height in casing (13).
9. the tubular audio amplifier as described in claim 1 or 8, it is characterised in that：The medium and high pitch loudspeaker (12) is one or many
Full frequency speaker unit composition, when be made up of many loudspeaker units, all loudspeaker units are electroacoustic and are connected together,
And the loudspeaker unit of the medium and high pitch loudspeaker (12) and the loudspeaker unit of the woofer (9) are also the same phase of electroacoustic
Connection.
10. the tubular audio amplifier as described in claim 1, it is characterised in that：The woofer (9) is raised one's voice for one or many
Device unit is constituted, relative in pairs to be correspondingly arranged when being made up of many loudspeaker units, and all loudspeaker units are electroacoustic
It is same to be connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621398044.5U CN206294305U (en) | 2016-12-19 | 2016-12-19 | A kind of tubular audio amplifier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621398044.5U CN206294305U (en) | 2016-12-19 | 2016-12-19 | A kind of tubular audio amplifier |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206294305U true CN206294305U (en) | 2017-06-30 |
Family
ID=59105406
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621398044.5U Active CN206294305U (en) | 2016-12-19 | 2016-12-19 | A kind of tubular audio amplifier |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206294305U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111361498A (en) * | 2018-12-25 | 2020-07-03 | 深圳纽斯声学系统有限公司 | Sound simulator for fuel automobile outside carriage |
-
2016
- 2016-12-19 CN CN201621398044.5U patent/CN206294305U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111361498A (en) * | 2018-12-25 | 2020-07-03 | 深圳纽斯声学系统有限公司 | Sound simulator for fuel automobile outside carriage |
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