How Do I Choose the Best Home Theater Powered Subwoofer?

2.1 Home theater audio is a set of home theater audio system composed of a pair of passive home theaters placed in front of the audio plus an active subwoofer host.

2.1 Home Theater Audio

This entry lacks an overview map . Supplementing related content makes the entry more complete and can be upgraded quickly. Come on!

2.1 Home theater audio is a set of home theater audio system composed of a pair of passive home theaters placed in front of the audio plus an active subwoofer host.

Chinese name

2.1 Home Theater Audio

Nature

A home theater sound system

Architecture

Left and right channels and a 0.1 subwoofer

Grade

beginner level

Is the most basic entry-level configuration in home theater audio. Compared with 5.1 home theater audio, there is one set of rear left and right audio and one set of center audio. It is composed of left and right channels and a 0.1 subwoofer.

1.Front left and right speakers

Front speakers, it is best to make an angle of 45 degrees to 60 degrees with the ears. The distance between the left and right speakers is determined by the position of the listener, that is, the distance of the listener from the display. Generally speaking, the front speakers can be placed in parallel with the listener as high as possible.

2.Subwoofer placement

It is best to place the subwoofer directly below the TV.

2.1 The speaker has two independent power amplifier modules, one for the stereo, responsible for the left and right two passive speakers, one for the subwoofer, and the module for the bass speakers. Power amplifier block, the subwoofer is a slightly larger power amplifier block after left and right channel joint filtering. Because the heavy whistle is a joint filter, one line in the left and right channels of the input is disconnected, and the other corresponding speaker will also emit a slight sound. This can be used to test the quality of the speaker. Audio input cable, listen to the volume of another satellite speaker is relatively large or small, the smaller the better, the bass changes between the input one and two, the smaller the better.

Power is the backing of the speaker

The power section of the speakers is also important. It includes transformer part, amplifier part and line input part. Line input includes power line input and signal line input. It mainly depends on whether the signal line and the power line are separated into the line, that is, the signal line and the power line must enter from the top and bottom of the box respectively, and cannot be squeezed together. Otherwise, the electromagnetic wave of the power line will cause greater interference to the signal line. In addition, the signal line is used

The mainstream of audio decoding is digital surround sound format with DVD and even HTPC as the core. The latest system also supports THX SURROUND EX and dts es decoded by Dolby Digital EX 6.1, and multi-channel digital audio DVD-Audio and SACD. As for multi-channel The playback system is technically the same, the difference is mainly in the grade. Moreover, as a system, the sound is composed of various equipment. When we purchase, we must not only consider the whole, but also consider each component:

Speaker

The speaker is the terminal for audio playback and the most overlooked part of a home theater system. A good speaker involves the disciplines of acoustics, electromagnetics, mechanics, materials, etc., and is the key to affecting the audio playback effect. It's not just six wooden boards and a few speakers that can be called a speaker.

In the X.1 AV speaker system, the subwoofer is the most important. The subwoofer can enhance the bass effect, and the most powerful subwoofer can perform the bass below 100Hz.

In addition, ideal home theater speakers, in addition to the subwoofer, it is best to strive for consistency in each channel-the main speakers on the left and right sides have the highest requirements for sound quality reproduction, and the center speakers and surround speakers on the rear can be smaller than the main speakers. But it must match the tone of the main speaker.

Good diffusion speakers are more practical, you should listen more and compare more during the purchase process. It should also be noted that most speakers do not take into account both dynamic and detailed sound quality. Speakers suitable for music appreciation are often more delicate and less dynamic; multi-channel AV speakers specially designed for home theater are often bland. . If both are taken into account, it is sky-high. So you have to find the one that suits you best. Consumers with no listening experience are better off using the same brand.

In addition, there are many devices on the market that can simulate the effect of surround sound through two speakers, but this virtual surround sound is essentially different from the surround sound reproduced by multiple speakers, so you want to feel full of dynamic and surround Cinema effect, 5.1 speaker system is already the lowest configuration.

AV amplifier

AV amplifier is the center of audio playback, which is characterized by multi-channel sound playback. When it comes to multi-channel playback, the standard of surround sound is inseparable. The current popular surround sound standards are: 1. Dolby prologic surround sound. 2. Dolby Digital surround sound. 3. DTS surround sound. 4. THX Surround EX surround sound (7.1-channel). 5. DTS-ES Discrete surround sound (6.1 channels). A home AV amplifier must have at least the Dolby Digital surround sound decoding and playback function, because Dolby Digital is the mandatory sound standard for PAL video discs specified by the DVD Alliance in December 1997. It is the user's responsibility whether the AV amplifier has this function. Selection of basic points. But other mainstream sound effects are best.

In addition, it is recommended to choose a combined AV amplifier with a built-in decoder. The factors that need to be considered during selection are the sound quality and color of the amplifier. Because the sound is subjective and varies from person to person, it is best to connect the speaker to the amplifier for actual audition.

Audio source

The mainstream audio and video media providing 5.1 surround sound are DVD, EVD, Blu-ray DVD, HTPC, mainstream game consoles and even MP4. For music appreciation, in addition to the most basic CD, the sound quality specifications of other audio sources are beyond CD, and support for multi-channel, can all become the standard audio source architecture, comprehensive consideration when selecting the type of audio and video source.

At this stage, DVD players are still the most suitable as home theater audio and video sources. In addition, Blu-ray DVD players with large capacity, high definition and perfect sound quality (including PS3 game consoles using Blu-ray DVD, etc.), HTPC or true SD / A high-definition digital TV system is also a good choice.