It goes without saying that new HDTV home theaters use Dolby Digital surround sound system technology. The Dolby noise reduction refines the sound quality that you hear so that it is crisp, clean and lifelike. The technology cleans up the signal it receives before it is produced for you on your television. This technology makes it so that you don’t get static on screen and static noises in your sound.
Now you can get this quality at home because all HD programming that now comes with digitally enhanced surround sound. All that is needed for a Dolby digital surround sound system is a home theater amplifier or receiver and one of the 3 main home theater speaker configurations. There are some formats that you may consider getting such as Dolby Digital, DTS, Dolby Pro-Logic and others.
Dolby Pro-Logic is one of the older receivers and can only handle a 5.1 speaker configuration. If the Dolby digital surround sound system supports this configuration it will work with a 5.1 channel setup. It will not provide the best sound you can get but is an adequate system to start off with. The 6.1 and 7.1 surround sound format will support the 5.1 also and sound much better.
5.1 surround speaker configurations
In the 5.1 surround sound system, the center speaker should be centered on video source while the subwoofer should be placed in an arc between the left and right speakers. Your left and right speaker should be at an angle from your sitting position that is 22-30 degrees and in an equidistant arc that connects the center channel and subwoofer(s) from your sitting position. The left and right rear speakers should also be on a 90-110 degree angle from the place where you will be sitting.
6.1 surround speaker configurations
The center speaker should be centered on the video source as well. The subwoofer(s) should be between the speakers and video source in an arc with the main left and right speakers. Left and right speakers should be on a 22-30 degree angle on an equidistant arc that connects the center channel and subwoofer(s). The rear speakers should be on a 90-110 degree angle from your sitting position and the rear center speaker should be directly behind you.
7.1 surround speaker configurations
Again, the center speaker is centered on the video source while the subwoofer(s) is in an arc between the front left and right speakers and video source. Front left and right speakers are in the front of your sitting position at a 22-30 degree angle and connect the center channel and subwoofer(s) and are equidistant apart. Front left and right speakers are at a 90-110 angle from where you sit. The rear speakers are placed equidistant behind your sitting position on a 135 – 150 degree angle from your sitting position.
Audiophiles find that they enjoy the sound a lot better if the speakers are placed so that they are aimed directly at the listener. Some listeners will prefer to aim the speakers straight ahead if the treble is a little too sharp though. You can experiment a little with the speaker placement to get the best sound for you personally.
Your Dolby surround sound system’s subwoofer may have a Dolby digital/Pro Logic switch that will set the crossover frequency to match your main speakers. You can have a wired surround sound system or opt to go with the newer wireless system that uses Bluetooth technology. A Dolby digital surround sound system is a big improvement over the older stereo systems. This is all thanks to Dolby digital sound technology advancements that are available for us today.