How much do you know about home theater speakers

                             How much do you know about home theater speakers

When installing a home theater, the first thing we consider is the effect of the speakers. As the equipment that directly expresses the sound in the entire system, the speakers play a vital role.

There are many forms of speakers: ordinary placed speakers, hanging speakers, and embedded speakers. Ordinary placed speakers also have various forms such as floor-standing, bookshelf, and satellite.

Functionally, it can be divided into active speakers and passive speakers. The main box, center and surround speakers are passive, and some subwoofers (subwoofers) are active and some are passive.

Active speakers are called "active speakers", usually with speakers with high power, such as computer multimedia speakers, new home theater active speakers, etc. Active speakers have a built-in power amplifier circuit, so there is no need to consider the problem of matching with the amplifier, and at the same time, it is convenient for direct driving of lower-level audio signals. The parameters such as output power, input impedance and input signal level of the built-in amplifier are usually marked, and the active subwoofer is also marked with parameters such as the frequency characteristics of the input signal and low-pass filter characteristics.

Passive speakers are called "passive speakers", that is, ordinary speakers without power amplifier circuits inside. Although they do not have amplifiers, they often have frequency division networks and impedance compensation circuits. Passive speakers are generally marked with parameters such as impedance, power, and frequency range.

main speaker

A pair of main speakers (left and right) are the most important in the system, responsible for supporting the magnificent scene sound effects of the entire movie, and the sound and music accompanying the picture are all emitted from the main speakers.

center speaker

The center speaker is the throat of the home theater. Generally, there is only one speaker. All the main vocal dialogues in the movie are emitted from the center speaker;

Surround speakers

Surround sound The number of surround speakers is variable. For a 5.1-channel home theater, there are 2 surround speakers, and for a 7.1 channel, there are 4 surround speakers. The function of the surround speakers is to improve the sound envelopment of the home theater. When watching a war movie, you will feel like you are on the battlefield, you can feel the bullets passing by, the shells exploding around you... The sounds in the scenes that can be seen in the screen are all produced by the main speaker and the center The sound from the speakers, the sound from the invisible scene is from the surround speakers, and for example, when a fighter jet flies from the front screen to behind you, there is a transition process between the main speaker, side surround and rear surround speakers , To achieve this effect, you need to make sure that your speakers are placed correctly, otherwise the sound will be a mess.

bass

Subwoofer (subwoofer) is the ".1" in 5.1 and 7.1 channels. The subwoofer is mainly responsible for the subwoofer channel, generally around 200HZ, which means that this low-frequency sound is between sound and Between the air currents, there was a roaring sound, and at the same time, a wind-like air current could be felt. For example, watching the Hobbit, the giant dragon invaded the kingdom of the dwarves. When the dragon pushed to the city wall, you would feel the shock of the sky falling apart, as if you were standing under the city wall and watched the violent dragon show its power, creating this kind of explosion. Waiting for the sound effect of the big scene depends on the subwoofer.

Subwoofer, main speaker, center speaker, surround speaker, overhead, and together constitute the speaker system of the home theater

5.1 Cinema: Two main speakers, one center speaker, two surrounds, one subwoofer;

7.1 theater: two main speakers, one center speaker, four surround speakers, one subwoofer;

7.2.4 Cinema: two main speakers, one center speaker, four surround speakers, two subwoofers, and four overhead speakers;