Speakers classification feature

Many speakers in the classification method, common in professional audio classification is as follows:

1. According to use circumstance into professional speakers and household, two kinds of speakers. Household speakers are commonly used household playback, its characteristic is playback sound apple is downy, usb speakers are delicate and beautiful exterior, playback level of high power, not less. Professional speakers are commonly used ballroom, karaoke, cinemas, theaters, synagogue and sports venues such professional entertainment places. Generally, the sensitivity of the higher professional speakers, strength of high pressure release notes, inherit the power, compared with the sound box household, also not hard very delicate. But in the professional speaker, its performance and listening to speakers, household is delicate and cabinet is commonly, so this kind of surveillance speakers are often household HI - FI audio system.

2 in playback frequency points can be divided into the band: the speakers, bass speaker and low sound box. So-called the band speakers refers to low frequency and high frequency, covering the scope of audio playback. The band of frequencies generally lower for speakers 30Hz - 60Hz, cap for 15KHz - 20KHz frequency. In general the sound system and a pair of only two speakers or the band can be completely take playback task. Bass speaker and low sound box is generally used to complement the band of low frequency and low frequency sound of special playback speakers. This kind of loudspeaker generally used in large and medium-sized audio system, to strengthen the intensity and frequency playback. After a while, most use electronic prescaler (sound) frequency, low frequency signal into a dedicated to the bass amplifiers, push the bass or low sound box.

3 the end-use for points: can generally be divided into ZhuFang sound box. Listen and monitor speakers. ZhuFang sound box commonly used the main speaker, sound system for major playback task. ZhuFang sound box performance of the sound system of playback quality, also can choose the band speakers and low sound box portfolio playback.

Used to control and monitor speakers made use of surveillance program recording, it has the distortion, the frequency response of wide and flat, little modification properties, such as signal can be accurately recreate therefore most of the original program. Return to speakers say again stage surveillance speakers, usually in a stage for the actor or hall or members of the band played his voice singing or surveillance. This is because they are located on the stage ZhuFang sound box, can't hear clearly behind his voice or band, so can not very well with or find no feeling, the serious influence performance effect. General return to speakers, on the ground made cant, so can not influence on the stage of the overall modelling, and stage in playback for stage, also not clear who will listen to sound feedback and whistle. Microphones,

4 in case structure to points can be divided into: sealed box, pour in speakers, labyrinth speakers, acoustic tubular speakers and more resonant cavity. In the professional speaker with was in sound, its characteristic is the response, high efficiency, wide, with sound professional audio system, but because of the speakers, therefore, the low efficiency in professional sound less application, mainly used in household speakers, only a few of the monitor speakers adopts closed box structure. Sealed box with the design and debug simple frequency response is wide, the low-frequency transient characteristics as well as good, but the unit to dial the sound is higher requirements. At present, in all sorts of speakers, and sealed box in the speakers of other type, proportion of most of the various forms of structure, the speakers proportion but rarely.

1, equipped with speakers (Closed) is the most simple Enclosure structure of the speaker system, carry forward by FrederICk 1923, the speaker unit in a sealed the cabinet. It can be the speaker to radiation to sound waves and radiation, but due to the closed completely isolated from the box exists, increase the quality of sports resonate speakers, the rigidity of the lowest resonant frequency. Equipped with the crackling sound, but some deep analysis of force, use the bass speaker when ordinary hard fold ring, in order to satisfied the bass replay, need to adopt large volume of large-scale case, new airtight speakers chosen mostly Q value appropriate GaoShun sex speaker. In the case of using closed compressed air quality of elastic role, although the speakers in smaller cabinet, cone basin on the back cushion basin, the dynamic pressure cone, so this small equipped with speakers also called air cushion speakers.

2, Bass Reflex Enclosure (Bass) Reflex Enclosure - also called fall in Phase Inverter AcoustICal speakers (1930), by Thuras invention. In its load in a hole in the cabinet mouth make a panel, hole position and shape, there are many, but most in the hole is equipped with sound catheter. The cabinet interior acoustic catheter hole relations, according to this principle, in particular resonance frequency resonate, says the resonant frequency. After the speaker to the sound radiation transcatheter fall after noise radiation, the mouth to ahead, speaker and acoustic radiation were before, it can provide more wide bandwidth than closed higher sensitivity, smaller distortion. The ideal state, the lower frequency low replay 20% lower than the resonant frequency speakers. This box is heavy with smaller cabinet can emit rich bass, is the most widely used type.

3 and AcoustIC impedance type speakers (AcoustIC resistance Enclosure) is essentially a fall in the box, deformation sound-absorbing material or structure filling in the mouth, as the noise intraductal half closed box control interactions, buffer, in order to reduce the resonant frequency band to improving the bass replay.

4 and transmission line type speakers (Labyrinth Enclosure) is the classical theory of electric transmission of the speaker, named behind with sound of wall board made of sound, its length is required catheter ascending low-frequency sounds wavelength 1/4 or 1/8. Theoretically it by cone attenuation of sound behind basin, prevent the reflection to the open end of the bass speaker and acoustic radiation, but actually transmission with mild damping of speakers and tuning, increases the speaker in the near or below the resonant frequency sound output, and enhance the bass output and reduce stroke volume. Usually the speaker's voice catheter is mostly fold, so also says maze of meandering or labyrinth.

5 and passive type FuSheShi speakers (Drone Cone Enclosure) is the bass reflex Enclosure of the branch, say again empty paper pot, 1954 American Olson is published, it Preston and make the hole by a mouth and circle the magnetic empty paper Cone (passive Cone basin), passive Cone basin vibration of speaker and forward radiated acoustic radiation in working condition, use with the casing air and passive components together constitute the Cone basin supports the composite ShunHe passive sound Cone, enhance the quality of basin formation resonance. The speaker's main advantage is to avoid the reflection of unstable make hole volume of sound, even if not also can obtain the acoustic radiation effect, so high sensitivity, can effectively reduce speaker spoke, working in small, sound wave effects clear and transparent.

6 and coupling between speakers are closed cavity type and bass reflex enclosure structure between us, 1953, it's well Henry published by cone basin which side output driver output, make hole on the other side of the bowl and cone a closed box coupling. The speaker's advantages for low by speakers greatly increases the amount of air, because a tuning system, coupling cavity in the cone motion restricted basin, no more than single output noise mouth basin, the sound output cone our exhibition, so low replay range reduced distortion, increase power. In 1969, the Japanese Lo - d of the island, A us fortune w. (S) of Super AcoustIC Woofer speakers is A type of speakers, coupled with cavity small-bore long stroke speaker no distortion replay bass. 7, # cylinder type Enclosure) speakers (Horn of household type, use more fold the trumpet (Folded Horn, it shall form) found in the mouth with larger air load, the small diameter drive coupling, the speaker's back is sealed, box cavity pressure are more in the speaker cone basin on the back. For the cone pressure balance, and basin in the trumpet device to pour front speakers. Fold the trumpet sound is poured in, the noise of the speakers better results derived from the general bass with sealed box reflex enclosure.

Medium mixed sound resonates

Medium hybrid stereo sound principle: the resonant vibration oscillating voice (TMS) + paper vibration audio speakers

Traditional (ordinary) sound and vibration stereo sound, the combination of both sound and vibration of vibration and sound of the horn of traditional. Medium mixed audio mainly is the combination of vibration technology principle and common vibration audible voice sound paper eardrums horn, both fusion, Actually medium mixed sound resonates or very good understanding, medium resonance is medium, and break through the vibration is mixed with the traditional speakers, generally is traditional ordinary acoustics and vibration of sound, tone, clear, heavy bass effect is now major cities in China should be sold, not seen such stereo music enthusiasts, can go to experience, should you won't be disappointed!