Difference between passive speaker and active speaker

The output power of the active speaker is different from that of the passive speaker. The active speaker has a built-in power amplifier, and the passive speaker needs an external power amplifier to work. However, the passive speaker also has advantages. The passive speaker is smaller than the active speaker and can save space.

1. Passive speakers are also known as "passive speakers", that is, ordinary speakers without power amplifier circuit. Passive speakers can be regarded as "wooden box + horn". Although it has no amplifier, it often has frequency division network and impedance compensation circuit. Since the sound cards of VCD, DVD and computer do not have power amplifier and only output sound analog signals, it is necessary to connect a special power amplifier (power amplifier).

2. Generally, multimedia speakers are active. Home theater speakers are passive. Behind passive speakers are usually two red and black terminals. In the past, professional speakers were passive, while active speakers were amateur. Now it's not so easy to say which is better or worse between the two. Some special professional audio systems also need to use active. When purchasing speakers, you can choose active or passive according to your needs.

3. Active audio is often used in computers and cable broadcasting. As long as the system gives it a sound signal, it can make it sound. But its sound quality is limited by the sound signal source. In addition, its power is also small, which is limited to family and personal use.