Recently i have been on a quest to buy myself a home theater system so i did a lot of research on that matter..Since i dont want to all that good knowledge go to waste i have decided to make this short tutorial so that any of you could know a thing or two about this and if you ever find yourself wanting to buy some of these systems than youll know what to look for.
From the rear speakers to the central channel speaker, check how your home theater surround system provides that immersive sound experience.The way a home theater stereo surround works is not that much complicated to understand when you already experienced one and paid attention to the synchrony between image and sound. Intuitively, is quite easy to say what each speaker do when you are watching a movie and we could define this dynamic as a dance of sound across the room. So let’s break the steps of this dance so you can really dig what is going when you are watching TV with your home theater.
Subwoofer: Lets start by the basics. All respectful home theaters have this basic speaker channel, that is designated as the “.1” of the set. So either it is a 5.1 or a 7.1, the subwoofer is always there as the auxiliary bass provider. Only the lowest bass and groove sounds will come from the subwoofer, which is strategically placed where this kind of low frequency sounds will reverberate better, in a nut shell, where they will not sound like suffocated inside a box. This will depend always on the design of your room. Some home theater systems can include not only one, but two subwoofers. In this case you will see them named as 5.1, 6.2, 7.2 and so on.You can also find good 2.1 speakers for your system but you really should go with higher channels than this.
Front speakers: Both a left and a right front speakers will be, obviously, placed alongside the TV screen. These speakers have a wide range of frequencies, but they keep a reasonable threshold of highs and lows, just as naturally they should be. Here we start our dance: when something happens at the left of the screen, far in front of you or far beyond the TV screen, this channel will “speak” for that sound. The same happens when it goes to the right side of the screen. There are the 5.1.2 and 7.1.2 home theaters, where this last “.2” refers to two extra front channel speakers. They are also defined as ceiling speakers or floating speakers, depending how they are implemented in the room – either mounted on the ceiling or hanging from it. The realism here is enhanced as the “far beyond the TV” sounds can be focused in these speakers.
Rear speakers: Just like the front speakers, the sound here will dance, from left to right whenever it is demanded. Note that this kind of speakers must mimic the same kind of “towards and beyond” emission that the front speakers do, so they must be placed in the back corners of the room, rather than besides your sofa like many people do erroneously. The 7.1 sets include two extra rear speakers that enhance the realism of background sound, so two of them will be kept further away from the sofa while the extra two are kept closer, alongside, providing realism to first person scenes where we are following the character.
Central Channel Speaker: For last, this speaker was one of the most important additions to home theaters, and is what brought the sets beyond the 5 digit. The best central channel speaker has the job to focus all the dialogue and the soundtrack – which is different from ambient music. In the last years though, central channel speakers were revamped to perform this task more realistically. Let’s say that someone speaking in scene moves to the left, leaving the scene, but still talking off the screen. Would be clumsy to keep that characters’ dialogue in the central channel speaker as it should be emitted from the left front or rear channel – depending to where the person is moving. Upgraded Dolby and DTS high-end technologies equalize better the central channel speaker to do not monopolize dialogue.
See? Now that hard to understand how you are immersed inside a movie when enjoying your home theater. For commercial cinema rooms you will also find robust sets that range from 11 to 15.1 speakers. But they all follow the same dynamic to make the sound dance as the characters themselves move in the screen.