There is no doubt that HDTVs can offer a fantastic viewing experience compared to older television standards. However, the visual aspect is only part of the goal of creating a realistic home theater setup. Good audio is the other vital component, and no matter how good your TV’s speakers are, they won’t hold a candle to a proper surround sound system.

There are two main options, both of which are widely available: 5.1 and 7.1. The numbers refer to the number of channels and therefore speakers provided. A 5.1 system supports 6 speakers. The ‘.1’ is the subwoofer, designed to reproduce low frequencies, such as thunder and explosions. The other 5 speakers (sometimes called satellites) are split into left and right, positioned in front of the listener; left and right surround speakers, set slightly back on either side; and center forward. 7.1 systems are the same as a 5.1 setup, with the addition of two additional speakers located behind the listener. There is a less popular 6.1 version, which adds just one extra surround back channel.

Most people agree that a 7.1 system provides a more realistic audio experience, with more depth and immersive qualities. This is especially true for large rooms. However, 5.1 is a perfectly adequate option for most applications.

If you decide to buy a surround sound system, you can choose to buy an A/V receiver and speakers separately, or opt for one of the many packages on the market that include everything you need. Both options have their advantages, for example, it is usually easier to set up an all-in-one package; but buying separately allows you to choose the best individual components for your particular requirements. The receiver is the heart of a surround sound system, supplying the amplification and providing inputs and outputs. Don’t worry too much about buying a particularly high power receiver. Vendors often quote impressive-sounding wattages, which many people translate to loud volumes; This is not necessarily the case. If you’re worried about all the wiring involved, it might be a good idea to consider a wireless system. While these are not a true wire-free option, they do eliminate the need for wiring to the rear (surround) speakers.

Once you’ve purchased your system, take some time to plan the location of the TV and other components. Proper speaker positioning can have a dramatic effect on the overall audio experience.

For those who, due to cost or available space, don’t want to jump on the surround sound bandwagon just yet, there is always the option of ‘virtual’ surround sound. Many newer televisions come with the ability to simulate the surround sound experience with just two speakers, using systems like SRS Trusound.