What is a computer active speaker? What are active speakers and passive speakers

The vast majority of computer speakers are active speakers, which are speakers with their own amplifiers.

Generally,It is a stereo speaker with only two speakers in the main speaker and the sub-speaker,Its built-in power amplifier is in the main speaker,Because there is a transformer inside,So it will be heavier。

There are two satellite speakers and a subwoofer, which is a general amplifier built into the subwoofer. Your computer speaker can be connected,Now unplug the cable of the computer speaker,Then use the audio cable of the lotus head given when you buy *** (there are two lotus heads at each end),Insert one end into the audio output hole of ***,The other end is inserted into the audio input hole of the speaker。 Note: It is best to distinguish between l (left) and r (right).

If your speaker is really garbage (less than 20 yuan and there is no power plug), go to buy a speaker, it is very cool to watch a movie, and it is recommended that the cheapest Edifier is about 100 yuan. Now that you have a computer, you won't be reluctant to spend more than 100 yuan to buy a speaker.

An active speaker is a speaker that needs an external power supply. You can't do that.

Summary. The so-called active speaker,It means that the speaker itself has a power amplification function,Such a speaker,You only need to input an audio signal to it to make sound。 The impedance of a passive speaker is 4 or 8, and an external power amplifier is required to produce sound (the input impedance of an active speaker is usually around 10,000).

Since the active speaker has a built-in power amplifier, it must be connected to an external power supply to work, so it will have an external power cord, while the passive speaker does not need a power supply, so it only has two binding posts connected to the power amplifier.

The picture below on the right is the back of the passive speaker, and you can see that there are only two binding posts.

The picture below is an active speaker, and you can see that there is a power cord.

Therefore, it is easy to distinguish from the appearance.

What are active speakers and passive speakers

The so-called active speaker,It means that the speaker itself has a power amplification function,Such a speaker,You only need to input an audio signal to it to make sound。 The impedance of a passive speaker is 4 or 8, and an external power amplifier is required to produce sound (the input impedance of an active speaker is usually around 10,000). Since the active speaker has a built-in power amplifier, it must be connected to an external power supply to work, so it will have an external power cord, while the passive speaker does not need a power supply, so it only has two binding posts connected to the power amplifier.

The picture below on the right is the back of the passive speaker, and you can see that there are only two binding posts. The picture below is an active speaker, and you can see that there is a power cord. Therefore, it is easy to distinguish from the appearance.

My active speaker doesn't light up when it's plugged in, what's the reason.

There is no sound except that the indicator light is not on.

No. There is no need to panic when this happens, and it is generally referred to as a hard failure. It is a problem that is relatively easy to check and repair.

If the power indicator is not lit, the most likely problem is a partial power failure. You can check the external power supply--- power socket, plug, and power cord first. Whether it is energized and whether it is burned out or broken circuit.

Then check the internal power supply--- power switch, transformer, fuse, rectifier, filter capacitor, resistor, and indicator light. Whether there is any burnout or broken circuit. If there is a multimeter, it can be judged from the measurement of the outermost component, and if there is no multimeter, it can only be judged by replacing the component.

Simply try the power switch or fuse to make a rough judgment by short-circuiting it instantaneously. If there is no maintenance foundation, it is best to find someone to repair it, after all, personal safety is the most important.

Do you have the above situation in your speaker?

Bang I'll take a look. Pro, this should be tested to see if there is anything wrong with it.

Does this use a 220V power supply?

The right pro is 220v

Operation method: Through a three-point five-meter two-point audio cable, plug in the headphone output interface of the computer at one end, and plug in the red and white interface of the speaker at the other end, connect the power supply to work, plug and play.

Computer speakers are mainly divided into two types of speakers: active speakers and passive speakers. The built-in small power amplifier of the active speaker is directly plugged into the microphone interface of the computer through the speaker wire, and it can work when the power is turned on.

Passive speakers are generally mainly some large speakers or some old-fashioned speakers, it does not have an amplifier, so you must first connect the speaker wire to the power amplifier, and then connect the computer through the power amplifier wire, and finally connect the other end of the power amplifier to the power supply, so that it can work normally.