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Is the car subwoofer active or passive?

2021-04-26 78
Comparison of active speakers and passive speakers
Introduction of active speakers:

Built-in power amplifier circuit, it can work when power supply and signal input are connected. Active speaker 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 in computers are active speakers, that is to say, 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 introduction:
There is no power amplifier circuit inside the passive speaker, 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 and will not be disturbed. 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.

1. In terms of power amplification
Passive speakers do not have a built-in power amplifier circuit and must be connected to an external power amplifier to work. The active speaker is externally connected with a built-in power amplifier circuit powered by a power supply, which has sufficient power and can work when the power supply and signal input are connected, without the power amplifier.

2. In terms of output sound
The integrated sound card has nothing to talk about for the average user in terms of output. The integrated sound card mainly relies on the software debugging of the driver to output sound effects, while the independent sound card is only required for special sound effects to be targeted for purchase, or it is more high-end It has hardware-level debugging capabilities. Therefore, the integrated sound card can also meet the requirements of the vast majority of users. If there is no special requirement, don’t buy an independent sound card, it’s a waste of money

3. Market positioning and consumer groups

Active speakers are now mostly used in the field of computer multimedia, 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 very high, and they are not too good on the circuit of the power amplifier. Pay attention to, it is a simple sound system; passive speakers are formal speakers, with high power and good sound quality, but the product is large and bulky.


Is the car subwoofer active or passive?


In addition, the price of passive speakers is much more expensive than that of active speakers. In terms of effect, passive speakers are better, but passive speakers are used in many conditions, which is a bit troublesome. Active speakers can be used as long as they are correctly connected to the audio cable, data cable, and power supply. For ordinary users, the active speakers for listening to music and watching movies are completely fine.

Features of active subwoofer and passive subwoofer
When we are refitting car audio, we usually hear the master introduce "active subwoofer" and "passive subwoofer". I think some car owners have the meaning of these two subwoofers, and the characteristics between the two are different. know it well. So, let's combine some pictures to introduce these two types of subwoofers.

Active subwoofer: refers to the subwoofer with a power amplifier (power amplifier) inside the cabinet.

advantage:
1. The workmanship is generally small and easy to install
2. Because the speaker has a built-in power amplifier, you don't need to add a power amplifier, you can directly connect the audio source to push it.
3. The price is generally more affordable.

Disadvantages:
1. The output power is relatively small, and the music performance is not very strong
2. The circuit structure is relatively simple

Is the car subwoofer active or passive? The characteristics of active and passive subwoofers
Passive subwoofer: refers to a subwoofer that contains only the speaker unit and frequency divider inside the cabinet, and does not include a power amplifier.

advantage:
1. The speaker unit has a complex mechanism and better materials
2. High output power, strong low-frequency signal output, strong music performance

Disadvantages:
1. It is large, bulky, and takes up more space
2. The price is more expensive compared to active subwoofers

Is the car subwoofer active or passive? The characteristics of active and passive subwoofers
Summary: After reading the above introduction, I think everyone should have a clearer understanding of "passive subwoofer" and "active subwoofer". Here are some additional purchase information. Active subwoofers are more suitable for junior car audio enthusiasts, or friends who are not very demanding on low frequencies. The passive subwoofer is a must-have car audio modification equipment for those who like strong DJs and dance music!
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