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In the field of multimedia speakers, the concept of independent power amplifier appeared in 2002. After a period of market cultivation, about 2005 and 2006, this new design idea of multimedia speakers has been widely recognized by consumers. Major speaker manufacturers have also launched new 2.1 speakers with independent power amplifier design, Thus set off a wave after wave of "independent power amplifier" boom. In fact, the sound quality of the speaker will not be greatly improved because of the design of the independent power amplifier. The independent power amplifier can only effectively reduce the impact of electromagnetic interference on the sound quality, which is not enough to cause a considerable improvement in the sound quality. However, the design of independent power amplifier still has many advantages that ordinary 2.1 multimedia speakers do not have

，獨 立功放由于沒有內(nèi)置的體積，所以可以做到更好的散熱效果。普通的內(nèi)置功放的音箱，由于被密封在導(dǎo)熱效果差的木箱箱體內(nèi)，只能通過倒相管的對流進行散熱。

First of all, the independent power amplifier has no built-in volume, so it can achieve better cooling effect. Because the ordinary speaker with built-in power amplifier is sealed in the wooden box with poor heat conduction effect, it can only dissipate heat through the convection of phase inversion tube.

而對于獨 立功放來說，雖然功放電路同樣被封在盒子里，但由于功放盒不像音箱，沒有密封的要求，所以可以在發(fā)熱部件的位置開出大量的散熱孔，使得熱量可以通過自然對流迅速的發(fā)散出去。這對于大功率功放尤為重要。

For the independent power amplifier, although the power amplifier circuit is also sealed in the box, because the power amplifier box is not like a speaker, there is no sealing requirement, so a large number of heat dissipation holes can be opened at the position of the heating parts, so that the heat can be rapidly dissipated through natural convection. This is particularly important for high power amplifier.

其次，從功放這一方面來說，獨 立功放對于電路的設(shè)計有利。普通的音箱為了容積、穩(wěn)定性等諸多因素，電路的設(shè)計非常緊湊，很難做到優(yōu)化的電路排布。

Secondly, from the aspect of power amplifier, independent power amplifier is beneficial to the design of the circuit. For the sake of volume, stability and many other factors, the circuit design of ordinary speakers is very compact, so it is difficult to optimize the circuit layout.

而獨 立功放，由于具備了獨 立的功放盒，具有充足的空間，所以電路設(shè)計上可以一切從電學(xué)設(shè)計的需要出發(fā)，而不受客觀因素的干擾。獨 立功放對于電路的穩(wěn)定發(fā)揮有利。

The independent power amplifier, because of the independent power amplifier box, has sufficient space, so the circuit design can start from the needs of electrical design, without the interference of objective factors. Independent power amplifier is beneficial to the stability of the circuit.

再次，內(nèi)置功放的音箱，由于箱體內(nèi)的空氣處于不停止的振動之中，導(dǎo)致功放的PCB版和電子元件發(fā)生諧振，而電容等元件的振動會回放到聲音中去，從而出現(xiàn)雜音。

Thirdly, because the air in the speaker with the built-in power amplifier is in the constant vibration, the PCB board and electronic components of the power amplifier will resonate, while the vibration of the capacitor and other components will play back to the sound, resulting in noise.

另外揚聲器也會產(chǎn)生電磁上的影響，即使是全防磁的喇叭，也會又不可避免的漏磁現(xiàn)象，碩大的低音喇叭更是如此。電路版、IC等電子元件售漏磁的影響，會對電路中的電流產(chǎn)生干擾，從而產(chǎn)生干擾的電流聲。

In addition, loudspeakers will also have electromagnetic effects. Even if the loudspeakers are fully antimagnetic, there will be inevitable magnetic leakage, especially for the huge bass loudspeakers. The influence of magnetic flux leakage of circuit board, IC and other electronic components will interfere with the current in the circuit, resulting in interference current sound.

此外，獨 立功放設(shè)計的音箱由于采用了功放箱體控制的方式，很大程度地解放了低音箱的擺放位置，節(jié)省了寶貴的桌面空間。

In addition, the speaker with independent power amplifier design adopts the way of power amplifier box control, which largely liberates the placement of low speaker and saves valuable desktop space.

說了這么多獨 立功放的優(yōu)點，其實總結(jié)出來就是一句話——如果不考慮體積、價位等等原因，只從使用效果角度考慮的話，那么獨 立功放要優(yōu)于內(nèi)置功放的設(shè)計。

After talking about the advantages of so many independent power amplifiers, it can be summed up in one sentence: if we don't consider the size, price and other reasons, and only consider the use effect, then the independent power amplifier is better than the built-in power amplifier.