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What is the difference between active speakers and passive speakers?


  active speaker(Active Speaker) Also known as "active speakers". It usually refers to speakers with power amplifiers, such as multimedia computer speakers, active ultra-low speakers, and some new home theater active speakers. Due to the built-in power amplifier circuit, the user does not have to consider the problem of matching with the amplifier, and it is also convenient to drive directly with a lower level audio signal.

Active speaker refers to a class of speakers equipped with self-powered amplifiers inside the speaker. These power amplifiers are specially used to push the speakers in the speakers. Due to the special matching design, these power amplifiers can be better used to push the speakers in the speakers, so that users do not need to consider the power of the power amplifier. How much and whether the impedance matches. In addition, since the speaker is also equipped with an electronic frequency divider that divides the frequency in front of the amplifier and each power amplifier is only responsible for amplifying an audio signal of a frequency, the efficiency of the amplifier can often be higher and the distortion can be relatively smaller.

In addition, there are some professional audio monitor speakers with built-in power amplifier circuits and electronic frequency divider speakers with built-in electronic frequency divider circuits and amplifiers that can also be classified as active speakers.

 passive speaker(Passive Speaker) also known as "passive speaker". Passive speakers are ordinary speakers that we usually use, without power amplifier circuits inside. Although the passive speaker does not have an amplifier, it often has a frequency divider network and an impedance compensation circuit. Active speakers are usually marked with parameters such as the output power, input impedance and input signal level of the built-in amplifier. Passive speakers can be seen as "wooden boxes plus speakers", the advantage of this is that the sound can reach the best state, will not be disturbed.

  Its main features are:

1. The rated output power is large, and the power amplifier can be freely matched.

2, the choice of space is relatively large, you can choose discrete components of the amplifier, can also be matched with the tube amplifier.

There is no power amplifier circuit inside the speaker, and an external power amplifier is required to work.

  active speaker and passive distinction:

The difference between active speakers and passive speakers is mainly whether the speakers have power amplifiers. It means that there is a set of circuits inside the speaker that have the effect of power amplification without the need for a special power amplifier. The disadvantage of the active speaker is that the circuit inside may cause some problems such as resonance and electromagnetic interference.

2. There is no power amplifier circuit inside the passive speaker, and an external power amplifier is required to work. It can also be regarded as a "wooden box horn", which has the advantage that the sound can reach a good state without being disturbed. Since the player and the computer's sound card do not have a power amplifier and only output sound analog signals, a dedicated power amplifier needs to be connected.

3. Active speakers are now mostly used in the field of computer multimedia, and some occasions with special needs (such as electronic organ speakers). Such speakers generally have low output power, cannot be turned on very loudly, and are not too particular about the circuit of power amplifiers. They are simple sound systems. Passive speakers are formal speakers with high power and good sound quality, but the products are large in volume!

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