Subwoofers for Home Theater Digital Surround Sound Systems

When choosing subwoofers you must understand that subs are very important to the overall effect and impact of your home theater digital surround sound system. They reproduce the LFE (low frequency effects) information that are "seat of the pants" bass effects. Those LFE effects are the ".1" part of 5.1, 6.1 or 7.1 digital surround audio system. That ".1" LFE information is routed to your receiver's subwoofer out connector. The sub bass effects greatly help to create the feeling of being immersed in the action when watching a movie.

Your powered sub-woofer should have the most power of any of your speakers due to the fact that low frequencies take the largest amount of power to create. I am stressing the previous sentence because for you to be fully satisfied with your home theater surround system you will need a good and powerful sub speaker unit. Low frequencies are long wavelengths and as such take a far greater amount of power to produce than a mid-range or high frequency which are relatively shorter wavelengths. The larger your room is the more power you will need to fill it of course.
You may also find it acoustically advantageous to add "bass traps" to your room to help prevent low-frequency build-up of those long wavelengths in your listening environment. Bass traps can either be purchased manufactured models or you may simply place large fluffy throw-pillows in the corners of your room to absorb the sound waves and reduce build-up.

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Home theater system subwoofers (or as some call them sub woofers or subs) do not have to be extemely expensive to provide the impact of thunder. Moderate priced speaker models such as the Athena 400 watt model on the right can supply the punch without KO'ing your pocketbook.

Sub-woofers are not dogs that bark at underwater vessels...

Most subs you find are the powered models. There are also audiophile varieties that are very large bass speaker enclosures and are externally powered by one's choice of esoteric amplifiers. There are even many plans available for do it yourself enclosures if you are so inclined and handy with power tools. Such DIY subs range from simple sealed or ported types and can include the infinite baffle variety which are often ported into the attic of a home for some real low, low, bass effects.

Whatever your particular needs - there should be a good and powerful sub at the "bottom-end" of the audio spectrum in your home theater.

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