CN203057482U - Active double-membrane resonance one-piece voice box 2.1 - Google Patents

Active double-membrane resonance one-piece voice box 2.1 Download PDF

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Publication number
CN203057482U
CN203057482U CN 201320036432 CN201320036432U CN203057482U CN 203057482 U CN203057482 U CN 203057482U CN 201320036432 CN201320036432 CN 201320036432 CN 201320036432 U CN201320036432 U CN 201320036432U CN 203057482 U CN203057482 U CN 203057482U
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China
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subwoofer
woofer
casing
bass
audio
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CN 201320036432
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Chinese (zh)
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郑全录
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Shen Zhen Neusound Co ltd
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Individual
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Abstract

The utility model relates to a voice box 2.1 of a speaker cabinet, specifically to an active double-membrane resonance one-piece voice box 2.1, which comprises a left preposed voice box, a right preposed voice box and a subwoofer. The subwoofer is composed of a big box body and a small box body which are relatively independent. A sound conducting pipe which is used for transmitting bass airstream and communicates with the ambient atmosphere is installed in each box body. The second box body of the subwoofer is nested inside the first box body of the subwoofer. Two same woofers aresymmetrically installed on the second box body of the subwoofer. The two left and right preposed voice boxes are also independent box bodies, are positioned in front of the integrated voice box and are also nested inside the first box body of the subwoofer. According to the utility model, there are three audio power amplifiers which respectively drive the subwoofer and the left and right preposed voice boxes. Driven by audio signals, vibrating membranes of the two woofers of the subwoofer vibrate. The two active vibrating membranes form double-membrane resonance such that the bass effect is enhanced.

Description

Initiatively two membrane resonance integral type 2.1 audio amplifiers
Technical field
The utility model relates to 2.1 audio amplifiers of sound equipment, two membrane resonance integral type 2.1 audio amplifiers of a kind of active specifically.
Background technology
Along with technological progress, the especially raising of development of computer and living standards of the people, people require more and more higher to the sound equipment play quality, develop from traditional large floor formula audio amplifier 2.1 sound box systems.2.1 " 2 " in the audio amplifier are left and right preposition sound channels, " .1 " is woofer (being commonly called as subwoofer).The subwoofer volume here is very big, so can only make three, i.e. left and right preposition audio amplifier and subwoofer.So just three of comprising subwoofer all can not be put on the table.
National Defense Industry Press in June, 2006 publish " in the practical loudspeaker techniques handbook, closed bass box (244~247 pages), open type bass box (248~255 pages), transmission line bass box (259~261 pages) and band general formula woofer (247 pages) are disclosed, the structure (241~244 pages, 265~272 pages) of speaker system is also disclosed, these woofers one are that volume is very big, the 2nd, bass effect is bad, can not realize the broadcast of desktop high-quality.
The utility model content
The purpose of this utility model is to provide a kind of active two membrane resonance integral type 2.1 audio amplifiers.This audio amplifier comprises a subwoofer and left and right two preposition audio amplifiers, i.e. three independent audio amplifiers, and three audio amplifiers are structure as a whole, but when reducing volume pedestal table face and putting, left and right sound channels is stereo is also reset well.
The purpose of this utility model is achieved through the following technical solutions:
The utility model comprises left front audio amplifier, right front audio amplifier and subwoofer of putting of putting, and described subwoofer, left frontly puts audio amplifier and the right front audio amplifier of putting is integral structure, and relatively independent; Described subwoofer comprises relatively independent subwoofer first casing and subwoofer second casing, subwoofer second casing is nested in subwoofer first box house, describedly left frontly put audio amplifier and the right front audio amplifier of putting is installed in respectively on subwoofer first casing nested type, put audio amplifier and right front putting is separately installed with L channel and raises device and right channel loudspeaker in the audio amplifier left front; The inside of the inside of described subwoofer first casing and subwoofer second casing all be equipped with ambient air be connected, at ambient air and the phonocatheter of acoustic conductivity air-flow between the casing separately, each conduit is equipped with outlet sound mouth; Be respectively equipped with first woofer and second woofer on described subwoofer second casing, described integral type 2.1 audio amplifiers have bass power amplifier, L channel power amplifier and three audio-frequency power amplifiers of R channel power amplifier.
Wherein: the volume of described subwoofer first casing is greater than the volume of subwoofer second casing, a tank wall at subwoofer first casing has the first bass outlet sound mouth, is provided with the first bass phonocatheter that links to each other with the described first bass outlet sound mouth in subwoofer first casing; Described subwoofer second casing is exposed on the outside tank wall and has the second bass outlet sound mouth, is provided with the second bass phonocatheter that links to each other with the described second bass outlet sound mouth in subwoofer second casing; Describedly left frontly put audio amplifier and the right front audio amplifier of putting is relatively independent identical audio amplifier, all be positioned on the preceding tank wall of subwoofer first casing, and left-right symmetric distributes on the preceding tank wall of subwoofer first casing; Described left channel loudspeaker and right channel loudspeaker are that single full frequency speaker or two identical full frequency speakers or a full frequency speaker add a tweeter, only reach two during with upper speaker installing two, for being connected; Described subwoofer second casing shares identical preceding tank wall with subwoofer first casing, rear box wall reaches tank wall down, and the described second bass outlet sound mouth is positioned on preceding tank wall or the rear box wall, and is positioned at left front audio amplifier and the right front middle below of audio amplifier of putting of putting; Described first woofer and the second woofer symmetry are installed on the left and right tank wall of subwoofer second casing, are responsible for the bass sounding; Described first woofer and second woofer are identical loud speakers, and vibrating diaphragm is installed by vibrating diaphragm or magnet is installed magnet; Between described first woofer and second woofer for same polarity is connected, for being connected in parallel or being connected in series; The i.e. positive pole of first woofer of being connected in parallel connects the positive pole of second woofer, and the negative pole of first woofer connects the negative pole of second woofer; The i.e. negative pole of first woofer of being connected in series connects the positive pole of second woofer, the negative pole of the positive pole of first woofer and second woofer connects the output of described bass power amplifier, or the positive pole of first woofer connects the negative pole of second loud speaker, and the negative pole of the positive pole of second loud speaker and first loud speaker connects the output of described bass power amplifier; Described bass power amplifier connects the woofer combination of being made up of first woofer and second woofer, and for being connected together, namely the positive pole of bass power amplifier connects the positive pole of woofer combination, and the negative pole of bass power amplifier connects the negative pole of woofer combination; Described L channel power amplifier connects left channel loudspeaker, for being connected together; Described R channel power amplifier connects right channel loudspeaker, for being connected together; Describedly left frontly put audio amplifier and the right front audio amplifier of putting all is nested in subwoofer first casing.
Advantage of the present utility model and good effect are:
1. the subwoofer of the utility model audio amplifier has adopted two woofer symmetries to install, thereby produces initiatively two membrane resonances, and bass effect is strengthened, and has improved sensitivity, has reduced the distortion factor.
2. the subwoofer of the utility model audio amplifier is big small box nested structure, two casings have separately independently phonocatheter and outlet sound mouth, form dual bass arranged side by side and strengthen, the bass of generation is more powerful, simple and honest, plentiful, dive is darker, and bass is more soft and graceful and not stiff; Volume-diminished can place desktop simultaneously.
3. the utility model has adopted three independent power amplifiers, drives bass channel and left and right preposition sound channel respectively, and the distortion factor is reduced, and power increases, and intermodulation reduces, and tonequality improves.
4. left and right preposition audio amplifier of the present utility model is nested in the big casing of subwoofer, has reduced volume, has reduced weight, has realized the 2.1 sound box system desktopizations that traditional subwoofer and left and right preposition audio amplifier are formed.
5. left and right preposition sound channel of the present utility model is independently, and just its low frequency part reduces the playback frequency bandwidth of left and right preposition sound channel by the subwoofer sounding, will reduce distortion like this, improves playback tonequality.
Description of drawings
Fig. 1 is structural front view of the present utility model;
Fig. 2 is the right view of Fig. 1;
Fig. 3 is the connection diagram of loud speaker and a kind of connected mode of audio-frequency power amplifier;
Fig. 4 is the connection diagram of loud speaker and the another kind of connected mode of audio-frequency power amplifier;
Fig. 5 is the connection diagram of loud speaker and another connected mode of audio-frequency power amplifier;
Wherein: 1 is subwoofer first casing, and 2 is subwoofer second casing, and 3 is the first bass phonocatheter, 4 is the second bass phonocatheter, and 5 is the first bass outlet sound mouth, and 6 is the second bass outlet sound mouth, 7 is first woofer, and 8 is second woofer, and 9 are the left front audio amplifier of putting, 10 are the right front audio amplifier of putting, 11 are the left front loud speaker of putting, and 12 are the right front loud speaker of putting, and 13 is the bass power amplifier, 14 is the L channel effect, and 15 is the R channel effect.
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing.
As shown in Figure 1 and Figure 2, the audio amplifier that formalness of the present utility model is as a whole comprises left front audio amplifier 9, right front audio amplifier 10 and the woofer (claiming subwoofer again) put put, and these three audio amplifiers all are relatively independent audio amplifiers.Subwoofer comprises inside and outside nested two casings independently separately again, be subwoofer first casing 1 and subwoofer second casing 2, wherein a tank wall of subwoofer first casing 1 (present embodiment is right tank wall) is provided with first outlet sound mouth 5, and is provided with first phonocatheter 3 in subwoofer first casing 1; One end of first phonocatheter 3 is connected with first outlet sound mouth 5, and the other end is free end, is positioned at subwoofer first casing 1.Subwoofer second casing 2 is positioned at subwoofer first casing 1, forms box structure in the case of the little case of big housing-case; Subwoofer second casing 2 is provided with second outlet sound mouth 6, in subwoofer second casing 2 inside second phonocatheter 4 is installed, and an end of this second phonocatheter 4 is connected with second outlet sound mouth 6, and the other end is free end, is arranged in subwoofer second casing 2.First phonocatheter 3 is connected with ambient air, conduction all-bottom sound air-flow between ambient air and subwoofer first casing 1; Second phonocatheter 4 is connected with ambient air, conduction all-bottom sound air-flow between ambient air and subwoofer second casing 2.
The volume (or volume) of subwoofer first casing 1 is greater than the volume (or volume) of subwoofer second casing 2, and its volumetric ratio is 3~6:1.Subwoofer second casing 2 shares identical preceding tank wall with subwoofer first casing 1, rear box wall reaches tank wall down, and the second bass outlet sound mouth 6 is located on the preceding tank wall; The height of the last tank wall of subwoofer second casing 2 is lower than the first bass phonocatheter 3.The cross sectional shape of first outlet sound mouth 5 and second outlet sound mouth 6 can be quadrangle or circle, and the cross sectional shape that is attached thereto the first logical phonocatheter 3 and second phonocatheter 4 is corresponding with the shape of first outlet sound mouth 5 and second outlet sound mouth 6, and first and second phonocatheter 3,4 making material can be made or injection molding is made of paper web.
Subwoofer first casing 1 and subwoofer second casing 2 can be used the method manufacturing of injection mo(u)lding, and material can be selected engineering plastics such as ABS for use.For this reason, manufacture and design corresponding injection mold earlier, then injection mo(u)lding and assembling; Attention will be on the preceding tank wall of subwoofer first casing 1, reserves left and right preposition audio amplifier 9,10 hole are installed.On the left and right sides tank wall of subwoofer second casing 2, symmetry has been installed two first identical woofers 7 and second woofer 8; This is of a size of 3 inch~5.25 inch to loud speaker.Present embodiment is 4.5 inch.Being electrically connected to being connected together, being divided into again of first woofer 7 and second woofer 8 is connected in parallel and is connected in series; When being connected in parallel, the positive pole of first woofer 7 connects the positive pole of second woofer 8, and the negative pole of first woofer 7 connects the negative pole (as shown in Figure 3) of second woofer 8; When being connected in series, the negative pole of first woofer 7 connects the positive pole (as shown in Figure 4) of second woofer 8, or opposite, and the positive pole of first woofer 7 connects the negative pole (as shown in Figure 5) of second woofer 8.Present embodiment is for being connected in parallel.This wants on the face-to-face or back-to-back left and right sides tank wall that is installed in subwoofer second casing 2 with screw loud speaker; Present embodiment is face-to-face mounting means, namely this to the vibrating diaphragm of woofer to vibrating diaphragm.
Left frontly put audio amplifier 9 and the right front audio amplifier 10 of putting is audio amplifier independently, can adopt the method for injection mo(u)lding to make with plastics such as ABS; Certainly, design and make injection mold earlier.The left and right preposition audio amplifier of making 9,10 is installed in screw or glue on the symmetric position that the and arranged on left and right sides of the preceding tank wall of subwoofer first casing 1 reserves.Note the sealing that must keep subwoofer first casing 1.The second bass outlet sound mouth 6 is positioned at left front audio amplifier 9 and the right front below of putting audio amplifier 10 centres of putting.
Left channel loudspeaker 11 and right channel loudspeaker 12 are installed in left front put audio amplifier 9 and right front putting in the audio amplifier 10 respectively, the loud speaker of left and right sound channels loud speaker 11, each sound channel of 12 can be a full frequency speaker, also can be two, but left and right sound channels must be symmetrical.During as two loud speakers of each sound channel, can be identical, also can be formed by a full frequency speaker and a high pitch loudspeaker that every group of loud speaker will be with being connected.Loud speaker is of a size of 1.5 inch~3 inch, and present embodiment is that left channel loudspeaker 11 all is 2 identical inch full frequency speakers with right channel loudspeaker 12.
The audio frequency power amplifier of 2.1 audio amplifiers of the present utility model has three the tunnel, i.e. bass power amplifier 13, L channel power amplifier 14 and R channel power amplifier 15, and the power output of bass power amplifier 13 is greater than left and right sound channels 14,15 power output.Bass power amplifier 13 connects the woofer combination of being made up of first woofer 7 and second woofer 8, make subwoofer send low-frequency sound wave, L channel power amplifier 14 is connected left channel loudspeaker 11 and right channel loudspeaker 12 respectively with R channel power amplifier 15, makes left and right preposition audio amplifier 9, the 10 corresponding stereo sound waves of full range that send left and right sound channels.It should be noted that when audio frequency power amplifier is connected with each channel loudspeaker and will note polarity that namely the positive pole of three audio frequency power amplifier outputs must connect the positive pole of three audio amplifier loud speakers.
Operation principle of the present utility model is:
Subwoofer signal (low frequency signal) in the audio signal of input is input to bass power amplifier 13, bass power amplifier 13 output bass power are to first woofer 7 and second woofer, 8 speaker combination of subwoofer, first and second woofer 7,8 vibrating diaphragm vibrate relatively, initiatively two membrane resonances that Here it is; This resonance strengthens the all-bottom sound air-flow, the all-bottom sound air-flow that strengthens interacts at subwoofer first casing 1 and subwoofer second casing 2 respectively, is transferred to ambient air through first phonocatheter 3, first outlet sound mouth 5 and second phonocatheter 4, second outlet sound mouth 6 respectively.In the flow process of this two road all-bottom sounds air-flow, bass is got back and is further strengthened the enhancing dual arranged side by side of low-frequency sound wave just.Make the bass distortion little, simpler and more honest, plentiful, dive is darker, and bass is soft and graceful and not stiff.Simultaneously, subwoofer volume-diminished, weight saving, be implemented in desktop and put.Left channel signals in Shu Ru the audio signal is input to L channel power amplifier 14 simultaneously, and right-channel signals is input to R channel power amplifier 15, is applied to respectively on the left and right preposition loud speaker 11,12 by left and right sound channels power amplifier 14,15 output full range audio powers.Left and right preposition audio amplifier 9,10 sends the sound wave separately of left and right sound channels respectively, and forms stereo wave, and low-frequency sound wave is non-directional, so stereo sense of direction acoustic image location is not exerted an influence; And left and right preposition audio amplifier 9,10 is embedded in respectively in subwoofer first casing 1, so whole subwoofer and left and right preposition audio amplifier become one, the realization desktop is put.
2.1 audio amplifiers of the present utility model have adopted the two membrane resonances of the active of innovation, the subwoofer structure of the two casings of nested type, woofer with reduced size has substituted the large scale woofer, the subwoofer size is reduced greatly, and bass effect strengthens greatly, again with two independently preposition audio amplifier be embedded in the subwoofer casing, not only realized the desktopization of subwoofer 2.1 sound box systems, the bass playback effect is improved greatly, and stereo playback effect also is improved, and has realized that 2.1 sound box system volumes are little, in light weight, distortion is little, the purpose that playback effect is good.

Claims (10)

1. two membrane resonance integral type 2.1 audio amplifiers of an active comprise left front audio amplifier, right front audio amplifier and subwoofer of putting of putting, and it is characterized in that: described subwoofer, left frontly put audio amplifier and the right front audio amplifier of putting is integral structure, and relatively independent; Described subwoofer comprises relatively independent subwoofer first casing (1) and subwoofer second casing (2), subwoofer second casing (2) is nested in subwoofer first casing (1) inside, describedly left frontly put audio amplifier (9) and the right front audio amplifier (10) of putting is installed in respectively on subwoofer first casing (1) nested type, put audio amplifier (9) and right front putting is separately installed with L channel and raises device (11) and right channel loudspeaker (12) in the audio amplifier (10) left front; The inside of the inside of described subwoofer first casing (1) and subwoofer second casing (2) all be equipped with ambient air be connected, at ambient air and the phonocatheter of acoustic conductivity air-flow between the casing separately, each conduit is equipped with outlet sound mouth; Be respectively equipped with first woofer (7) and second woofer (8) on described subwoofer second casing (2), described integral type 2.1 audio amplifiers have bass power amplifier (13), L channel power amplifier (14) and (15) three audio-frequency power amplifiers of R channel power amplifier.
2. by two membrane resonance integral type 2.1 audio amplifiers of the described active of claim 1, it is characterized in that: the volume of described subwoofer first casing (1) is greater than the volume of subwoofer second casing (2), a tank wall at subwoofer first casing (1) has the first bass outlet sound mouth (5), is provided with the first bass phonocatheter (3) that links to each other with the described first bass outlet sound mouth (5) in subwoofer first casing (1).
3. by two membrane resonance integral type 2.1 audio amplifiers of the described active of claim 1, it is characterized in that: described subwoofer second casing (2) is exposed on the outside tank wall and has the second bass outlet sound mouth (6), is provided with the second bass phonocatheter (4) that links to each other with the described second bass outlet sound mouth (6) in subwoofer second casing (2).
4. by two membrane resonance integral type 2.1 audio amplifiers of the described active of claim 1, it is characterized in that: describedly left frontly put audio amplifier (9) and the right front audio amplifier (10) of putting is relatively independent identical audio amplifier, all be positioned on the preceding tank wall of subwoofer first casing (1), and left-right symmetric distributes on the preceding tank wall of subwoofer first casing (1).
5. by two membrane resonance integral type 2.1 audio amplifiers of the described active of claim 4, it is characterized in that: described left channel loudspeaker (11) and right channel loudspeaker (12) add a tweeter for single full frequency speaker or two identical full frequency speakers or a full frequency speaker, only reach two during with upper speaker installing two, for being connected.
6. by two membrane resonance integral type 2.1 audio amplifiers of the described active of claim 5, it is characterized in that: described subwoofer second casing (2) shares identical preceding tank wall with subwoofer first casing (1), rear box wall reaches tank wall down, the described second bass outlet sound mouth (6) is positioned on preceding tank wall or the rear box wall, and is positioned at left front audio amplifier (9) and the right front middle below of audio amplifier (10) of putting of putting.
7. by two membrane resonance integral type 2.1 audio amplifiers of the described active of claim 1, it is characterized in that: described first woofer (7) and second woofer (8) symmetry are installed on the left and right tank wall of subwoofer second casing (2), are responsible for the bass sounding; Described first woofer (7) and second woofer (8) are identical loud speakers, and vibrating diaphragm is installed by vibrating diaphragm or magnet is installed magnet.
8. by two membrane resonance integral type 2.1 audio amplifiers of the described active of claim 7, it is characterized in that: between described first woofer (7) and second woofer (8) for same polarity is connected, for being connected in parallel or being connected in series; The i.e. positive pole of first woofer (7) of being connected in parallel connects the positive pole of second woofer (8), and the negative pole of first woofer (7) connects the negative pole of second woofer (8); The i.e. negative pole of first woofer (7) of being connected in series connects the positive pole of second woofer (8), the negative pole of the positive pole of first woofer (7) and second woofer (8) connects the output of described bass power amplifier (13), or the positive pole of first woofer (7) connects the negative pole of second loud speaker (8), and the negative pole of the positive pole of second loud speaker (8) and first loud speaker (7) connects the output of described bass power amplifier (13).
9. by two membrane resonance integral type 2.1 audio amplifiers of the described active of claim 1, it is characterized in that: described bass power amplifier (13) connects the woofer combination of being made up of first woofer (7) and second woofer (8), and for being connected together, the positive pole that is bass power amplifier (13) connects the positive pole that woofer makes up, and the negative pole of bass power amplifier (13) connects the negative pole of woofer combination; Described L channel power amplifier (14) connects left channel loudspeaker (11), for being connected together; Described R channel power amplifier (15) connects right channel loudspeaker (12), for being connected together.
10. by two membrane resonance integral type 2.1 audio amplifiers of claim 1 or 3 described actives, it is characterized in that: describedly left frontly put audio amplifier (9) and the right front audio amplifier (10) of putting all is nested in subwoofer first casing (1).
CN 201320036432 2013-01-23 2013-01-23 Active double-membrane resonance one-piece voice box 2.1 Expired - Lifetime CN203057482U (en)

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CN 201320036432 CN203057482U (en) 2013-01-23 2013-01-23 Active double-membrane resonance one-piece voice box 2.1

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105744430A (en) * 2014-12-11 2016-07-06 通用汽车环球科技运作有限责任公司 Split box subwoofer with body mounted driver
CN106331939A (en) * 2015-06-19 2017-01-11 深圳纽斯声学系统有限公司 Integrated bar-type sound box
WO2020168729A1 (en) * 2019-02-19 2020-08-27 苏州上声电子股份有限公司 Loudspeaker system

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105744430A (en) * 2014-12-11 2016-07-06 通用汽车环球科技运作有限责任公司 Split box subwoofer with body mounted driver
CN105744430B (en) * 2014-12-11 2019-12-31 通用汽车环球科技运作有限责任公司 Box subwoofer with body mounted driver
CN106331939A (en) * 2015-06-19 2017-01-11 深圳纽斯声学系统有限公司 Integrated bar-type sound box
WO2020168729A1 (en) * 2019-02-19 2020-08-27 苏州上声电子股份有限公司 Loudspeaker system
US11849277B2 (en) 2019-02-19 2023-12-19 Suzhou Sonavox Electronics Co., Ltd. Loudspeaker system

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Owner name: SHENZHEN NIUSI ACOUSTIC SYSTEM CO., LTD.

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Effective date: 20141023

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Address after: 518132 Guangdong province Shenzhen Guangming New District Gongming street community Tianliao Juhui mould Industrial Park 4 Building 5 floor A District

Patentee after: SHEN ZHEN NEUSOUND Co.,Ltd.

Address before: Hunnan rookie street Shenyang city Liaoning province 110179 Neusoft Software Park Building 2 A4

Patentee before: Zheng Quanlu

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Granted publication date: 20130710

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