CN201167411Y

CN201167411Y - Full frequency loudspeaker box

Info

Publication number: CN201167411Y
Application number: CNU2008200318160U
Authority: CN
Inventors: 薛加勇
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-02-04
Filing date: 2008-02-04
Publication date: 2008-12-17
Anticipated expiration: 2018-02-04

Abstract

The utility model relates to a whole frequency speaker box which is characterized in that the whole frequency speaker box is at least composed of a whole frequency speaker (1) and a pipeline (2), the whole frequency speaker (1) is arranged on one port of the pipeline (2), and the other port thereof is an opening. The whole frequency speaker box creates and adopts the pipeline with the total length of 3/4 or 5/4 wavelength of the resonant frequency of a speaker, thereby fully playing the technical advantages of a pure transmission line speaker structure; creates and adopts the pipeline with the circular cross section, thereby having special good rigidity of the whole bending shape, fully avoiding the miscellaneous Boeing pollution of the prior rectangular box body and having natural and pure sound quality; and creates and adopts the light and thin pipe materials, thereby avoiding the interference of the coincidence effect by the mode of improving the resonant frequency of the box body; the speaker is directly arranged at the end part of a circular pipe, thereby allowing the sound emission not to be blocked by the box body, having wider angle and obtaining wider sound field. The whole frequency speaker box realizes the free form creation which can not strictly follow the technical parameters, but can also meet the visual requirements, thereby being the high combination of technology and art.

Description

The full frequency speaker case

Technical field

The utility model relates to a kind of loudspeaker acoustic enclosure, particularly a kind of audio amplifier that adopts full frequency speaker.

Background technology

The full frequency speaker case is meant that its sound that sends all has the loudspeaker enclosure of flat response in the full range scope of 20Hz～20000Hz, to be different from the loudspeaker enclosure that sends a certain frequency range sound specially, the subwoofer of mega bass for example to be provided or directional loudspeaker case, alt horn of language public address etc. are provided.

Present full frequency speaker case is divided into audio amplifier that adopts full frequency speaker and the audio amplifier that adopts sub-frequency loudspeaker.It is natural, clear to have a sound-reducing with the audio amplifier of full frequency speaker; The advantage of high, medium and low sound transitions smooth, smoothness.But because present technology still can't produce the full frequency speaker of " purely " that flat response is all arranged in the full range scope, so this class loudspeaker enclosure or bass energy deficiency, or high pitch is bright inadequately.Adopt the audio amplifier of high, medium and low band loudspeaker to have easily competent high pitch, the broad significant advantage that shows of bass, and shortcoming is that the perfection that is difficult to handle between the high, medium and low different loud speaker is connected, especially in the most responsive middle pitch zone of the sense of hearing, level and smooth, smooth transition must depend at the well-designed frequency dividing circuit of every money loud speaker.Difficulty in technical resource and the practical operation makes the high-end product in this class loudspeaker enclosure be more prone to artistic creation but not the technology manufacturing with uncertain.

Audio amplifier before nineteen seventies nearly all adopts full frequency speaker, constantly development and become main flow gradually of the loudspeaker enclosure of two frequency divisions, three frequency division afterwards.Yet in recent years,, adopt the audio amplifier of full frequency speaker worldwide to present the situation that revives moisture regain along with people increase perfect day by day with the full frequency speaker manufacturing technology to the dirty disease of frequency division design.

Adopt the sound effect of the audio amplifier of full frequency speaker when selecting different casing type, also to show evident difference.Several casing types commonly used are to close box, inverted phase type, transmission line formula, bear horn formula etc.Close box nature, clear aspect advantage outstanding, so become the first-selected type of monitoring the level audio amplifier, but its bass shortage is also the most obvious; Bear the horn formula then antithesis, the amount of bass sense promotes at most and tonequality is muddy relatively.Excellent, the shortcoming of all the other types all fall between, and this that all presents definition and amount of bass sense generally rises, and that disappears, is difficult to get both.

All audio amplifier designs all wish to reduce the coincidence effect of tank material resonance and playback sound wave, so that control clutter sound dyes.Existing speaker products adopts invariably and strengthens the tank material mass area ratio, the method that just increases the weight of, thickeies reduces the resonance frequency of casing, avoid the interference of coincidence effect, but be limited by the limitation of manufacturing cost and box weight, the idea that strengthens quality often is difficult to put into effect fully.

What the utility model adopted is transmission line type.The present existing transmission line audio amplifier overwhelming majority adopts rectangular box, and minority adopts the polygon casing.Its internal pipeline is the coffin that is formed by many dividing plates, connects connection in the broken line mode.Sound wave runs in the guide and produces a large amount of resonance in this rectangular duct inevitably, causes serious sound to dye.This assonance dyes to be annotated usually and is unique tone color of audio amplifier, is used to mate specific source of sound or hearer's preference, but requires from very far away with " fidelity " of reduction source of sound.And the internal pipeline length of rectangular box is very limited, and is also very little with the mode degree of freedom of dummy plate pipeline, is difficult to support the form of crippling, influenced the sounding angle and the effect of audio amplifier.

Summary of the invention

The purpose of this utility model then is at above-mentioned the deficiencies in the prior art, provides a kind of and possesses simultaneously that definition and amount of bass sense two aspect one's best qualities, tonequality are pure, the full frequency speaker case of tone color balance.

The purpose of this utility model can realize by following measure:

A kind of full frequency speaker case is characterized in that it is made of a full frequency speaker 1 and a pipeline 2 at least, and a port of pipeline 2 is provided with full frequency speaker 1, its another port openings.

Wherein, described pipeline 2 rounded cross sections and tortuous moulding.

And described pipeline 2 its total lengths are 3/4 or 5/4 wavelength of harmonic frequency of loudspeakers.

Described pipeline 2 adopts finished product tubing to make, and is provided with acoustical cotton in the pipeline 2.

The utility model belongs to the transmission line structure audio amplifier.Because it is 3/4 or 5/4 wavelength of harmonic frequency of loudspeakers that the pipeline total length is adopted in original creation, the characteristics of pure transmission line structure low frequency performance expansion, the plentiful balance of tone color have been given full play of.

The pipeline of circular cross-section is adopted in the utility model original creation, the clutter sound of having avoided existing rectangular box to send because of panel resonance fully dyes, add the peculiar good stiffness of circular pipe and bending moulding, the effect that control clutter sound dyes is more obvious, and tonequality is very pure.

The utility model thinking of breaking the normal procedure, original creation reduces material unit are method for quality, adopts very frivolous tubing, improves the resonance frequency of casing, has reached the purpose of avoiding the coincidence effect interference.

The utility model is directly installed on the end of pipe with loud speaker, has fully phased out panel construction, not blocked by casing when making the loud speaker sounding, and its sounding angle of loud speaker that not blocked by casing is also broad more, can obtain open sound field performance.

Description of drawings

Fig. 1 is a body structure schematic diagram of the present utility model.

Fig. 2 is the installation site schematic diagram of bipolar system loudspeaker unit.

Embodiment

The utility model is further described below in conjunction with accompanying drawing:

The utility model includes full frequency speaker 1 and pipeline is partly formed for 2 liang, and they constitute a full frequency speaker audio amplifier, and wherein full frequency speaker 1 adopts commercially available common full frequency speaker to get final product.Because what the utility model adopted is the full frequency speaker unit, the tone color of fundamentally having avoided the design of circuit frequency division to cause is uncertain and to the match selection of special sound source signal, all can obtain the tone color of purity, nature during the various source of sound of audio amplifier playback.

As shown in Figure 1, sound box adopts straight tube, bend pipe, pipe clamp and the reducing straight tube etc. of U-PVC section bar, and two pipelines independently are combined as a shape integral before and after forming.

Pipeline 2 of the present utility model both can be a linear, also can adopt indentation, preferred indentation, its material of main part can adopt products such as U-PVC pipe or hydraulic pressure solenoid, realize the bending of pipeline 2 by multiple compound mode such as straight tube, bend pipe, pipe clamp and customization reducing straight tube.In pipeline 2, can also be provided with, or be equipped with the Sponge protection cover of customization in pipeline 2 outsides as acoustical cottons such as centrifugally glass-wool, foam sponges.The length of pipeline 2 has adopted 3/4 or 5/4 wavelength of harmonic frequency of loudspeakers, compares 1/4 wavelength that generally uses at present, and the effect of low frequency dive and tone color balance is more remarkable.Simultaneously because pipeline 2 adopts is tortuous round tube, make that box house of the present utility model is that pipe interior is circular cross-section, return portion is spherical section, has reduced the sound that casing resonance causes to greatest extent and has dyed distortion.

The utility model can adopt the arrangement form of bipolar system, three kinds of loudspeaker units of multipolar system harmony pillar:

A. bipolar system is for to arrange the full range unit of two same sizes in opposite directions, and same-phase sound is launched in front and back.This mode has sound field broadness, accurate positioning, spreads apart the characteristics of raising.Figure 2 shows that the bipolar system loudspeaker arrangement.The audio amplifier moulding by two of front and back independently pipeline combine, an end of two pipelines all is provided with loud speaker, two loud speakers are positioned at same level height, arrange in opposite directions.

B. multipolar system is for to arrange the full range unit of six to eight same sizes in the form of a ring, by homogeneous radiation around the mediad, form aphalangia to point sound source, produce process of self-organization by the space and rebuild room sound field, this mode no longer relies on strict audio amplifier pendulum position, seat area definition and boundary reflection and goes back original sound field, and the difference pendulum position of point sound source can both self-organizing produce evenly soft Energy distribution.The indoor environment of various functions of use need not be special building acoustics design and special finishing, just can obtain the good sound quality effect.

C. the sound column formula is in line or square formation for the full range unit cell arrangement with six to eight same sizes, and the same-phase sound wave interference forms strong sensing radiation, and having controlled sound increases the decay that occurs with distance, makes concentration of energy reduce boundary reflection in the audience.Adopt this mode can reduce the greatest differences of far and near volume in the big room effectively, eliminate the tone color muddiness that the interface exaggerated reflex causes.Special public place at large contingent, space spaciousness.

The utility model can be decorated according to client's specific requirement creation overall space moulding and the thin portion of outward appearance according to the actual measurement parameter designing box inner structure of each loudspeaker unit, carries out and customizes completely.Audio amplifier base plate and carriage are equipped with the spherical rubber universal wheel as required, make things convenient for the placement of audio amplifier.Even with the various images of acrylic paints handwritten drawings, increase the aesthetic property of audio amplifier.

The undeclared part of other that relates in the utility model all adopts prior art to be realized.

Claims

1, a kind of full frequency speaker case is characterized in that it is made of a full frequency speaker (1) and a pipeline (2) at least, and a port of pipeline (2) is provided with full frequency speaker (1), its another port openings.

2, full frequency speaker case according to claim 1 is characterized in that rounded cross section of described pipeline (2) and tortuous moulding.

3, full frequency speaker case according to claim 1 and 2, the total length that it is characterized in that described pipeline (2) are 3/4 or 5/4 wavelength of harmonic frequency of loudspeakers.

4, full frequency speaker case according to claim 1 and 2 is characterized in that described pipeline (2) adopts finished product tubing to make.

5, full frequency speaker case according to claim 1 and 2 is characterized in that being provided with acoustical cotton in the described pipeline (2).