The difference and application of active speakers and passive speakers

Active speakers are also called "active speakers". Usually refers to a speaker with a power amplifier. Due to the 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. The passive speaker is also called "passive speaker", which is a common speaker that we usually use without a power amplifier circuit inside. Although passive speakers do not have amplifiers, they often have crossover networks and impedance compensation circuits.

Due to the special matching design, the power amplifier in the active speaker can be used to promote the speaker in the speaker, so that users no longer need to consider the power of the power amplifier and whether the impedance is matched. The disadvantage is that the speaker has a small caliber and mostly uses full-range speakers. One speaker serves as a bass, midrange and treble playback task at the same time, and the music level is not rich enough. In addition, active speakers usually have built-in transformers with lower power, and most of them use integrated circuits as power amplifier devices, making it difficult to create a magnificent sound field environment.

The passive speakers need to be connected to the amplifier to drive, which is greatly affected by the equipment and wires, which means that the sound adjustment is more flexible. You can use the characteristics of the signal line and the amplifier to supplement or improve the performance of the speaker. Under the control of the internal frequency division circuit, the built-in bass, midrange and tweeters are responsible for their duties, plus a professional power amplifier composed of high-power transformers, transistors, tubes and audio-quality high-quality resistance-capacitance components drives them. Therefore, its magnificent or meticulous music performance is far from comparable to desktop-grade active speakers. But because passive speakers need to be connected to the amplifier to drive, require additional equipment and space, so it is bulky and takes up space.

In terms of use, the active speaker has a lower relative output power, and the sound quality is not as good as the passive speaker. It is more suitable for general household use or going out to carry, and it is mostly used in the field of computer multimedia. Passive speakers are not convenient for going out because they require external power amplifier equipment. They are mainly used for large-scale performances, high-end home theaters, karaoke, etc.

Beilarly audio manufacturer TA860 single 18 inch active subwoofer

TA860 active speaker has good instantaneous performance, deep and rich low frequency. Its cabinet structure and process have been specially designed and developed. The reinforced cabinet reduces low-frequency resonance, the bass is almost extreme, and the full and thick low-frequency can be more vivid. The high-quality low-frequency unit not only makes it withstand more power, but also greatly improves the electro-acoustic conversion efficiency, so that the reliability of continuous working for a long time is guaranteed. The use of active power amplifier greatly improves the convenience of the application of this series of products.