what is the subwoofer for ?

                                               What is the subwoofer for

Principle of subwoofer

The internal power amplifier circuit divides the sound into several frequency bands through the frequency divider. The output of the middle and high frequency bands is sent to the satellite speakers, and the output of the low band is sent to the subwoofer. Generally, the subwoofer emits a low-frequency sound of 20-200HZ, which is transmitted through the phase port. , Resonates with the satellite speakers, and the bass effect is very shocking.

Type of subwoofer

An active subwoofer refers to a subwoofer with a built-in power amplifier, which does not need an additional power amplifier when used, and is usually cylindrical in shape. The disadvantage of this kind of subwoofer is that the heat dissipation is not ideal, the power is not very high, and the cylindrical shape usually produces unnecessary resonance phenomenon, which reduces the controllability of the subwoofer.

In contrast, passive subwoofers require an external power amplifier to work. The shape and power selection of this subwoofer can be more flexible, and the effect will naturally be more ideal. In addition, active speakers can be further divided into sealed boxes and punched boxes. The former is more suitable for deep symphony, and the latter is more suitable for pop music.

2 subwoofer function

Adding a subwoofer (especially active type) to the original audio system will greatly increase the dynamic range of the system and make the low frequency dive deeper. At the same time, it will also make the transparency of the intermediate frequency better, and the sound can be louder without restriction.

With the added boost and woofer, the sound system can reproduce the peak of the music at a higher level. And because the main speaker is no longer responsible for the task of reproducing the bass, it can be reproduced with a louder sound. Because the cone of the woofer of the main speaker no longer needs to move back and forth as violently as before, the midrange will be clearer when it is used to reproduce music.

3 The difference between an active subwoofer and a passive subwoofer

The difference between an active subwoofer and a passive subwoofer

1. The difference between whether there is a power amplifier or not

Active speaker: Built-in power amplifier circuit, it can work when it is connected to the power supply and signal input. For example, most of the speakers used on computers are active speakers.

Passive speakers: There is no power amplifier circuit inside, and an external power amplifier is required to work.

2. Differences in market positioning and consumer groups

Active speaker is a simple audio system, mostly used in the field of computer multimedia, with low output power.

Passive speakers are formal speakers with high power and good sound quality, but the products are bulky and heavy.

The difference between subwoofer, speaker and power amplifier

A subwoofer handles the bass specifically, unlike a woofer. Something more shocking or dynamic could be provided.

The amplifier is used to power the speakers.

The speaker is the one that emits sound, and it is distinguished according to different characteristics (speaker size, circuit characteristics) and so on. For front, left and right main speakers, rear surround, etc.

4 subwoofer speakers optional

1. Power:

It determines the maximum sound intensity that the subwoofer can produce. Depending on the rated power, there are currently two ways to mark the power of subwoofer speakers: rated power and peak power. The higher the signal-to-noise ratio, the better.

2. Box material

When choosing a speaker, weighing the weight is a very important step. If a large wooden speaker is very light, then its performance will not be much better.

3. Diaphragm material

Diaphragm material refers to the manufacturing material of the speaker diaphragm. If you like string music, choose paper cones, wool basins, metal music, polyethylene basins, and bulletproof cloth basins. Use paper basins and wool basins in the south as little as possible, because they are easy to absorb moisture and change the sound quality.

4. Speaker unit diameter

The diameter of the speaker unit (bass part) is generally between 2 and 6 inches. In this range, the larger the diameter, the higher the sensitivity and the better the low frequency response.

Principle of subwoofer

The internal power amplifier circuit divides the sound into several frequency bands through the frequency divider. The output of the middle and high frequency bands is sent to the satellite speakers, and the output of the low band is sent to the subwoofer. Generally, the subwoofer emits a low-frequency sound of 20-200HZ, which is transmitted through the phase port. , Resonates with the satellite speakers, and the bass effect is very shocking.

Type of subwoofer

An active subwoofer refers to a subwoofer with a built-in power amplifier, which does not need an additional power amplifier when used, and is usually cylindrical in shape. The disadvantage of this kind of subwoofer is that the heat dissipation is not ideal, the power is not very high, and the cylindrical shape usually produces unnecessary resonance phenomenon, which reduces the controllability of the subwoofer.

In contrast, passive subwoofers require an external power amplifier to work. The shape and power selection of this subwoofer can be more flexible, and the effect will naturally be more ideal. In addition, active speakers can be further divided into sealed boxes and punched boxes. The former is more suitable for deep symphony, and the latter is more suitable for pop music.

2 subwoofer function

Adding a subwoofer (especially active type) to the original audio system will greatly increase the dynamic range of the system and make the low frequency dive deeper. At the same time, it will also make the transparency of the intermediate frequency better, and the sound can be louder without restriction.

With the added boost and woofer, the sound system can reproduce the peak of the music at a higher level. And because the main speaker is no longer responsible for the task of reproducing the bass, it can be reproduced with a louder sound. Because the cone of the woofer of the main speaker no longer needs to move back and forth as violently as before, the midrange will be clearer when it is used to reproduce music.

3 The difference between an active subwoofer and a passive subwoofer

The difference between an active subwoofer and a passive subwoofer

1. The difference between whether there is a power amplifier or not

Active speaker: Built-in power amplifier circuit, it can work when it is connected to the power supply and signal input. For example, most of the speakers used on computers are active speakers.

Passive speakers: There is no power amplifier circuit inside, and an external power amplifier is required to work.

2. Differences in market positioning and consumer groups

Active speaker is a simple audio system, mostly used in the field of computer multimedia, with low output power.

Passive speakers are formal speakers with high power and good sound quality, but the products are bulky and heavy.

The difference between subwoofer, speaker and power amplifier

A subwoofer handles the bass specifically, unlike a woofer. Something more shocking or dynamic could be provided.

The amplifier is used to power the speakers.

The speaker is the one that emits sound, and it is distinguished according to different characteristics (speaker size, circuit characteristics) and so on. For front, left and right main speakers, rear surround, etc.

4 subwoofer speakers optional

1. Power:

It determines the maximum sound intensity that the subwoofer can produce. Depending on the rated power, there are currently two ways to mark the power of subwoofer speakers: rated power and peak power. The higher the signal-to-noise ratio, the better.

2. Box material

When choosing a speaker, weighing the weight is a very important step. If a large wooden speaker is very light, then its performance will not be much better.

3. Diaphragm material

Diaphragm material refers to the manufacturing material of the speaker diaphragm. If you like string music, choose paper cones, wool basins, metal music, polyethylene basins, and bulletproof cloth basins. Use paper basins and wool basins in the south as little as possible, because they are easy to absorb moisture and change the sound quality.

4. Speaker unit diameter

The diameter of the speaker unit (bass part) is generally between 2 and 6 inches. In this range, the larger the diameter, the higher the sensitivity and the better the low frequency response.