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Features and differences of passive speakers

2021-02-24 68
What are active speakers and passive speakers, and what is the difference?
Active speakers are also called "active speakers". Usually refers to speakers with power amplifiers, such as multimedia computer speakers, active subwoofers, and some new home theater active speakers. Since the active speaker has a built-in power amplifier circuit, the user does not need to consider the problem of matching with the amplifier, and it is also convenient to directly drive with a lower level audio signal. Passive speakers are also called "passive speakers". Passive speakers are ordinary speakers that we usually use without power amplifier circuits. Although passive speakers do not have amplifiers, they often have crossover networks and impedance compensation circuits. Active speakers are usually marked with parameters such as the output power, input impedance, and input signal level of the built-in amplifier. Active subwoofers are also marked with the frequency characteristics of the input signal (such as full-band signal or low-frequency signal), low-pass filter characteristics and other parameters. Passive speakers are generally marked with parameters such as impedance, power, and frequency range.

What is the difference between active speakers and passive speakers?

The main difference between active speakers and passive speakers is whether the speakers have power amplifiers.   Active speaker: Built-in power amplifier circuit, it can work when power supply and signal input are connected.   means that there is a set of circuits inside the speaker, which has the function of power amplification. For example, most of the speakers used on computers are active speakers, that is, they can be used directly by connecting them to the sound card of the computer. No need to go through a special power amplifier. The disadvantage of course is that the circuit inside may cause some resonance, electromagnetic interference and the like.   Passive speakers: There is no power amplifier circuit inside, and an external power amplifier is required to work.   can also be regarded as a "wooden box + horn", the advantage of this is that the sound can reach the best state without interference. Since VCD, DVD, and computer sound cards do not have power amplifiers and only output sound analog signals, a dedicated power amplifier needs to be connected. The difference between market positioning and consumer groups:    active speakers are now mostly used in the computer multimedia field, and some occasions with special needs (such as electronic keyboard speakers), these speakers generally have low output power, and the volume cannot be turned on too high The power amplifier circuit is not too particular, it is a simple audio system; passive speakers are formal audio, with high power and good sound quality, but the product is large and bulky.


Features and differences of passive speakers


How to distinguish between active and passive speakers?
Active speakers are also called "active speakers". Usually refers to speakers with power amplifiers, such as multimedia computer speakers, active subwoofers, and some new home theater active speakers. Since the active speaker has a built-in power amplifier circuit, the user does not need to consider the problem of matching with the amplifier, and it is also convenient to directly drive with a lower level audio signal. In addition, some professional recording monitor speakers with built-in power amplifier circuits and electronic crossover speakers with built-in electronic crossover circuits and amplifiers can also be classified as active speakers. Passive speakers are also called "passive speakers". Passive speakers are ordinary speakers that we usually use without power amplifier circuits. Although passive speakers do not have amplifiers, they often have crossover networks and impedance compensation circuits. Active speakers are usually marked with parameters such as the output power, input impedance, and input signal level of the built-in amplifier. Active subwoofers are also marked with the frequency characteristics of the input signal (such as full-band signal or low-frequency signal), low-pass filter characteristics and other parameters. Passive speakers are generally marked with parameters such as impedance, power, and frequency range.
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