Speakers must have been used by everyone. As a sound amplification device, speakers are used in many situations. Of course, there are many types of speakers. So what are active monitor speakers? Let us follow Ze Shui to learn more about it.
What is an active monitor
Active speakers refer to a type of speakers with self-equipped power amplifiers inside the speakers. These power amplifiers are specifically used to drive the speakers in the speakers. Due to the special matching design, these power amplifiers can be better used to drive the speakers in the speakers, so that users do not need to think about the power of the power amplifier. And whether the impedance matches and other issues. In addition, because the speaker is also equipped with an electronic frequency divider that divides the frequency in front of the amplifier and each amplifier is only responsible for amplifying the audio signal of a certain frequency, the efficiency of the amplifier can often be made higher, and the distortion is relatively good. Smaller.
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.
Active monitor speakers
The main difference between active speakers and passive speakers
Passive speakers are also called "passive speakers". Passive speakers are ordinary speakers that we usually use without power amplifier circuit inside. 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 input signal frequency characteristics (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.
To talk about active speakers, we must first talk about the composition of the sound system. The simplest sound system includes 3 links: sound source, power amplifier and speakers. Audio source refers to sound playback equipment such as radio, deck, CD player, VCD, DVD, MP3, etc. For computers, both optical drives and sound cards are audio source devices. Generally, the output voltage of audio source equipment is relatively small, between hundreds of millivolts and two volts. If the speakers are connected directly, the sound may be very small or even silent. And because the impedance of speakers is generally very low, most of them are between 4~8 ohms. Some speakers with special designs have impedances of less than two ohms in certain frequency bands, which are close to short circuits, which can easily overload the audio source equipment. It may even cause damage to the audio source equipment. Therefore, a power amplifier (power amplifier for short) must be added between the sound source and the sound box to amplify the weak signal output by the sound source to sufficient power to drive the sound box and make the sound box emit sufficient volume. At the same time, the power amplifier has a high input impedance (usually tens of kilohms) and a low output impedance (a few tenths of ohms), which can play a buffering role between the audio source and the speaker, which will not overload the audio source equipment, but also Push the speaker easily.
Active monitor speakers
The above is the specific introduction of Zeshui’s active monitor speakers. Active monitor speakers are a very good device. There are many problems in the use of the equipment. This requires you to choose according to the actual situation, so as to facilitate yourself to find a better one. For suitable speakers.