1. Features of passive speakers
In terms of the professionalism of passive speakers, it is that the power amplifier is external, and you can freely match the power amplifier you want according to your needs or preferences, so you can experience its degree of freedom, so the rated power is generally larger, which makes Consumers have a larger choice of space, and the choice of what type of power amplifier is more arbitrary. And its sound quality will not be interfered by the signal source, and the sound quality is restored more realistically. There are actually many types of passive speakers, and there are also some skills in their selection.
In fact, passive speakers do not have any requirements for the material of the cabinet. Some consumers think that the wooden audio is better and the sound quality is good. In fact, the music only needs to be transmitted through the speaker, which has nothing to do with the cabinet of the speaker, as long as it is strong. The texture of the wooden speaker will be better after the processor. Passive radiating speakers can be considered when choosing the classification of passive speakers, because their better low frequency effect makes the sound quality and efficiency higher. When the power amplifier is matched with the speaker, the rated power of the speaker and the rated power of the power amplifier should be determined according to the sensitivity of the speaker and the characteristics of the business. Generally, the rated power is required to be relatively large. Choose the power amplifier to choose the tube power amplifier and the sub-stereo power amplifier. Specific choices require the accumulation of experience, and feel which one you really like.
Second, which is better, active speakers or passive speakers?
Active speaker: Built-in power amplifier circuit, it can work when power supply and signal input are connected. It 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 speaker: There is no power amplifier circuit inside, and an external power amplifier is required to work. It 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 in some occasions with special needs (such as electronic keyboard speakers). These types of speakers generally have low output power, and the volume cannot be turned on too much. 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 larger and bulky.