CN2319987Y - Small active heavy woofer box - Google Patents
Small active heavy woofer box Download PDFInfo
- Publication number
- CN2319987Y CN2319987Y CN 98211074 CN98211074U CN2319987Y CN 2319987 Y CN2319987 Y CN 2319987Y CN 98211074 CN98211074 CN 98211074 CN 98211074 U CN98211074 U CN 98211074U CN 2319987 Y CN2319987 Y CN 2319987Y
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- sound
- small
- box
- boxboard
- super bass
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Abstract
The utility model discloses a small active heavy bass sound box which is composed of a box body of the sound body, a phase reversal sound reversal pipe positioned in the box body, a bass loudspeaker, an amplifier circuit, a stereo signal input socket, an input signal converting switch and a metal plate. The utility model is characterized in that the box body of the sound body comprises a fully-closed containing cavity and a semi-closed containing cavity; the phase reversal sound reversal pipe and the bass loudspeaker of 3.8-4.3 inches are arranged in the fully-closed containing cavity; the inner width of the box body of the sound body is equal to the size of a caliber of the bass loudspeaker of 3.8-4.3 inches; the amplifier circuit, the metal plate, the stereo signal input socket, and the input signal converting switch are arranged in the semi-closed containing cavity.
Description
The utility model relates to a kind of super bass box, and especially a kind of small-sized active super bass box is the stereo set field.
Super bass box in the market for the bass of resetting, all used the loud speaker of larger caliber and the casing of larger volume, thereby volume is all bigger; Though supply CD-audio player on the market, the various little audio amplifier style that walkman and the playback of PC audio cards are used is a lot, and the combined acoustics that has super bass box is wherein arranged, and all is that bass can be reset usually, and the audio amplifier volume is just bigger; If volume is less, then tonequality or bass effect are just poor, and cost is higher, moreover that the volume of this class casing does not still reach is desirable small-sized.
The utility model applicant once proposed the stereo super bass box of using of a kind of small-sized 3D in number of patent application 95236055.1, he can form small-sized 3D stereo reproducing system with the little audio amplifier of small-sized left and right acoustic channels, emitting clear stereo with small-sized 3D stereo reproducing system in less space.This little audio amplifier can be accepted computer multi-media, walkman, and portable CD player, portable radio-cassette player, the VCD machine, the output of LD machine, and reach comparatively desirable small-sized.Realize through practice, for example the time with the computer multimedia, when the music of wanting the playback band or sound, also need the connecting plug that connects the stereo signal input socket with super bass box of small-sized 3D is extracted from computer, change the insertion walkman, not only inconvenient, repeatedly insert and extract more fragile connector.The also once external signal change over switch of the utility model applicant is selected input, but cabling is difficult to neatly also be easy to generate back drop.It has in all kinds of stereo sets of the function of including really, early has input signal to select translation function, thereby its input translation function is important as can be known.
The purpose of this utility model is to avoid above-mentioned weak point of the prior art and a kind of small-sized active super bass box is provided, this small-sized active super bass box is small-sized except still having, outside the good advantage of tonequality, also has the stereo signal input socket more than 2, select input socket by the input signal change over switch, thereby select different input signals.
The purpose of this utility model can reach by following measure: a kind of small-sized active super bass box, by sound box and the paraphase sound guide tube that places in it, woofer, amplifier circuit, metallic plate, 2 stereo signal input sockets and input signal change over switch are formed.Sound box includes totally-enclosed cavity volume and semiclosed cavity volume, in totally-enclosed cavity volume, place paraphase sound guide tube and (3.8～4.3) inch woofer, be equipped with amplifier circuit at semiclosed cavity volume, metallic plate, 2 stereo signal input sockets and input signal change over switch.The inner width of sound box matches with the caliber size of (3.8～4.3) inch woofer
In above-mentioned technical solution, the outlet of paraphase sound guide tube is opened on the boxboard on the boxboard opposite that is connected with loud speaker, and the arrival end of its paraphase sound guide tube stretches to the boxboard that loud speaker is connected, and presses close to this boxboard.
In above-mentioned technical solution, stereo signal input socket has 2, selects wherein 1 input socket by the input signal change over switch.
Amplifier circuit includes LF power amplifier and left and right acoustic channels amplifying circuit.Low-frequency amplifier circuit and left and right acoustic channels amplifying circuit are obtained signal by the input signal change over switch from 1 stereo signal input socket wherein jointly.Input signal is regulated the volume of its supper bass and left and right acoustic channels respectively by potentiometer.The direct-connected knob of control footstalk of the volume control potentiometer of amplifier circuit stretches to outside the casing.In amplifier circuit, the power amplifier integrate circuit of buying easily on the market has been adopted in back level power amplification.The output of left and right acoustic channels amplifying circuit meets wherein 1 to 2 output signal sockets through the output signal change over switch.
When the amplifier circuit of this small-sized active super bass box only includes LF power amplifier, can cooperate with the little audio amplifier of other various dissimilar active left and right acoustic channels, to remedy the deficiency of bass.Also can cooperate, be used on the computer multi-media, because the power output of computer multi-media audio cards generally has 3 watts with the little audio amplifier of various dissimilar passive left and right acoustic channels.
Description of drawings is as follows
The small-sized active super bass box major side views of Fig. 1 the utility model
The small-sized active super bass box of Fig. 2 the utility model top cutaway view
The metallic plate front view of the small-sized active super bass box of Fig. 3 the utility model
The small-sized active super bass box of Fig. 4 the utility model and two active stereo little sound box system figure that the little audio amplifier of stereo channel is formed.
The line map of amplifier circuit in the small-sized active super bass box of Fig. 5 the utility model
The utility model is described in further detail below in conjunction with drawings and Examples:
With reference to figure 1, Fig. 2, Fig. 3; Fig. 2 is as the A-A cutaway view among Fig. 1, and Fig. 3 is as the B direction view among Fig. 1, the i.e. front view of metallic plate 17.Casing 1 is by boxboard 6,15, side box plate 31,32, and top boxboard 4 and under casing plate 12 are formed, and boxboard 15 is divided into totally-enclosed cavity volume 2 and semiclosed cavity volume 14 to casing 1.The caliber size of the inner width of sound box and 4 inches woofers matches.
In Fig. 1, the actual caliber size of 4 inches woofers can be 3.8～4.3 inches.
In Fig. 1, in totally-enclosed cavity volume 2, place paraphase sound guide tube 11 and 4 inches woofers 9, be equipped with amplifier circuit 33 at semiclosed cavity volume 14,34 open on the boxboard 15 on boxboard 6 opposites that are connected with loud speaker 9 with the outlet 13 of metallic plate 17 paraphase sound guide tubes 11, its arrival end 10 stretches to the boxboard 6 that loud speaker 9 is connected, and presses close to this boxboard 6.Semiclosed cavity volume 14 is led in the outlet 13 of paraphase sound guide tube 11, and the metallic plate 17 that covers on the semiclosed cavity volume 14 has ventilative window 18.So arrange, make the sound wave of cone 8 back of 4 inches woofers 9 have longer distance just to deliver to outside the audio amplifier, lower frequency response effect is promptly arranged.Like this, 11,4 inches woofers 9 of paraphase sound guide tube and totally-enclosed cavity volume 2 can be designed to best replaying bass effect.
At Fig. 1, Fig. 2, among Fig. 3, semiclosed cavity volume 14 is equipped with amplifier circuit 33,34 and metallic plate 17.Metallic plate 17 is positioned in the opening part of semiclosed cavity volume 14, by screw 16 metallic plate 17 is fixed on the sound box 1.Be welded with stereo signal input socket 24,25 on the circuit board of amplifier circuit 33,34 respectively, output signal socket 22,23, input signal change over switch 21, output signal change over switch 19, potentiometer 35,36, integrated circuit 30, indicator light 29 and resistance, electronic components such as electric capacity.By stereo signal input socket 24,25, output signal socket 22,23, input signal change over switch 21, output signal change over switch 19, potentiometer 35,36, the screw of integrated circuit 30 on metallic plate 17 links, and the circuit board of amplifier circuit 33,34 is fastened on metallic plate 17.Integrated circuit 30 also outwards dispels the heat by metallic plate 17.Mains switch 20, DC supply socket 26 is fastened on the metallic plate 17 by screw.The potentiometer 35,36 of amplifier circuit 33,34, input signal change over switch 21, the footstalk of output signal change over switch 19 directly pass metallic plate 17 and stretch to outside the casing 1, and knob 27,28 is fastened on the footstalk of potentiometer 35,36.The DC plug of power transformer 37, the electric wire of left and right acoustic channels audio amplifier and other signal electric wires can directly insert each socket on the metallic plate 17.Simple in structure like this, to be convenient to produce and quality control, system is easy to connect.On the Speaker panel 5 outside the boxboard 6 baffle cloth or wire netting 7 are housed.Ventilative window 18 inwalls of metallic plate 17 post baffle cloth or wire netting.
In Fig. 1, also can be with potentiometer 35,36, mains switch 20, indicator light 29 passes via boxboard 6 and Speaker panel 5 by electric wire, comes Switching Power Supply and control volume by the left direction in the view 1.Here, Speaker panel 5 also can make parts by plastic cement.Electric wire 3 among the figure is to connect LF power amplifier 33 and loud speaker 9.
In Fig. 5, the circuit on the circuit board includes LF power amplifier 33 for promoting 4 inches woofers 9, the stereo power amplification circuit 34 of left and right acoustic channels is arranged for promoting external left and right acoustic channels loud speaker 38.See shown in Figure 5ly, low passage filter network 39 takes out the low-frequency component in the left and right acoustic channels, mixes, and is promoted, for low-frequency power amplifier 40 amplifications.Input signal is regulated the volume of its supper bass and left and right acoustic channels respectively by potentiometer 36 and 35.
External stereo source such as computer multi-media and walkman are by stereo signal input socket 24,25 inputs.Supper bass amplifying circuit 33 and left and right acoustic channels amplifying circuit 34 pass through input signal change over switches 21 jointly from stereo signal input socket 24, or 25 obtain signal.The number of stereo signal input socket also can be increased to 3 or 4 by 2, and the input signal change over switch is used 2 * 3 cuttves or 2 * 4 cuttves instead, increases the function of plugging into.
33,34 li of amplifier circuits, the power amplifier integrate circuit of buying easily on the market 30 has all been adopted in back level power amplification.The output of left and right acoustic channels amplifying circuit 34 connects to output signal socket 22 or 23 through output signal change over switch 19.
In this technical solution, arrange 2 output signal sockets 22 and 23, be based on such consideration; Listen the hearer to experience stereo, the dead ahead that must occupy the left and right acoustic channels audio amplifier, the path length that the sound that allows the sound of L channel audio amplifier arrive left ear and R channel audio amplifier arrives auris dextra is the same.When the little audio amplifier 38 of left and right acoustic channels is connect to output signal socket 22, and be arranged in certain position, the place ahead, the left and right sides of computer work platform for example, listening the hearer when leaving the computer work platform and sitting on other positions, at this moment can arrange the little audio amplifier of a cover left and right acoustic channels in other positions in addition, this little audio amplifier connects to output signal socket 23.19 groups of output signal change over switches to socket 23.Listen the hearer and can enjoy stereosonic effect equally in this position.
When the amplifier circuit of this small-sized active super bass box only includes bass power amplification circuit 33, can cooperate with the little audio amplifier of other various dissimilar active left and right acoustic channels, to remedy the deficiency of bass.The power output of computer multi-media audio cards generally has 3 watts, and when the volume requirement was little, this super bass box also can cooperate with the little audio amplifier of various dissimilar passive left and right acoustic channels, is used on the computer multi-media.In this case, stereo signal accessory power outlet 22,23 directly is connected with input through output signal change over switch 19, promptly is to connect to input signal change over switch 21.
Compared with prior art have the following advantages: simple and reasonable, be convenient to make. Paraphase is led Sound pipe and loudspeaker have been done effective cooperation in size and structure, obtain lower frequency response effect Should; Heat dissipating state to the IC of serving as the power amplification function has been done improvement, both Box sizes has been dwindled again in convenient heat radiation; In Fig. 4, the utility model and small-sized about The supporting composition clear stereo of the little audio amplifier of sound channel active audio amplifier can be in littler space with being somebody's turn to do Active audio amplifier is emitted the stereo sound of high-fidelity, and can hear abundant bass.
Stereo signal input socket more than 2 is selected to fail by the input signal change-over switch Enter socket, thereby select different signal source signals, like this, very square to choosing of source of sound Just. Now VCD is cheap on the market, by above-mentioned the utility model form active little audio amplifier and VCD matches, and is combined into family movie institute, in 4 meters * 4 meters room, and effect Fine, the utility model is chosen conveniently multiple sound resource, more makes small home cinema sound Viewing system is arranged simple and easy. At least have the young people of a walkman for oneself, cost Little investment namely can be set up high-fidelity music center at oneself room or desk. This practicality New design people thinks that it is high-quality vertical that the utility model product can make more people enjoy Body sound rings.
Claims (6)
1. small-sized active super bass box, he is by sound box and the paraphase sound guide tube that places in it, woofer, amplifier circuit, metallic plate, stereo signal input socket and input signal change over switch are formed, it is characterized in that being that sound box includes totally-enclosed cavity volume and semiclosed cavity volume, in totally-enclosed cavity volume, place paraphase sound guide tube and (3.8～4.3) inch woofer, the inner width of sound box matches with the caliber size of (3.8～4.3) inch woofer, be equipped with amplifier circuit at semiclosed cavity volume, metallic plate, stereo signal input socket and input signal change over switch.
2. small-sized active super bass box according to claim 1 is characterized in that the inner width of sound box and the caliber size of (3.8～4.3) inch woofer match.
3. small-sized active super bass box according to claim 1 is characterized in that the outlet of paraphase sound guide tube is opened on the boxboard on the boxboard opposite that is connected with loud speaker, and the arrival end of its paraphase sound guide tube stretches to the boxboard that loud speaker is connected, and presses close to this boxboard.
4. small-sized active super bass box according to claim 1 is characterized in that stereo signal input socket has more than 2, selects input socket by the input signal change over switch.
5. small-sized active super bass box according to claim 1 is characterized in that amplifier circuit includes LF power amplifier at least.
6. small-sized active super bass box according to claim 1 is characterized in that being that the material of casing can be plastics, timber, paper material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98211074 CN2319987Y (en) | 1998-02-18 | 1998-02-18 | Small active heavy woofer box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98211074 CN2319987Y (en) | 1998-02-18 | 1998-02-18 | Small active heavy woofer box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2319987Y true CN2319987Y (en) | 1999-05-19 |
Family
ID=33965861
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 98211074 Expired - Fee Related CN2319987Y (en) | 1998-02-18 | 1998-02-18 | Small active heavy woofer box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2319987Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1447621B (en) * | 2002-03-26 | 2011-09-28 | 王博 | Postposition type bass loudspeaker system |
| CN103716727A (en) * | 2013-12-31 | 2014-04-09 | 冠捷显示科技（厦门）有限公司 | Position changeable type multidirectional-sound-output loudspeaker separating box for television |
-
1998
- 1998-02-18 CN CN 98211074 patent/CN2319987Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1447621B (en) * | 2002-03-26 | 2011-09-28 | 王博 | Postposition type bass loudspeaker system |
| CN103716727A (en) * | 2013-12-31 | 2014-04-09 | 冠捷显示科技（厦门）有限公司 | Position changeable type multidirectional-sound-output loudspeaker separating box for television |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |