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Subwoofers are becoming much more important to your own home theater experience. When you visit your local theatre, you marvel not only at the images projected on the cinema screen, while the sounds emanating around you. What really grabs you, though, would be the sound you actually feel; the strong bass that rumbles you up and gets you in the middle of your gut.

A specific speaker, termed as a subwoofer, enhances this experience. The bass speaker is manufactured simply to reproduce the lowest of audible frequencies.

Passive subwoofers are energized by an external amplifier, of the same fashion as other speakers in your system. The strong but subtle consideration here is that since intensive bass needs more power to reproduce low frequency sounds, your amplifier or receiver needs to be capable to output enough electricity to sustain bass effects within the sub woofer without draining the amp. The amount of power relies on certain requirements of the speaker as well as the size of the space (and just how much bass you are able to stomach!).

To eliminate the situation of limited energy or other characteristics that may be lacking in a amplifier or receiver, powered subwoofers are self contained speaker/amplifier units wherein the characteristics of the amplifier and sub woofer are optimally harmonized.

As being a side benefit, all a powered subwoofer needs is definitely a line output from your receiver. This arrangement requires a lot of the electricity load out of the amp/receiver and enables the amp/receiver to power the mid range and tweeters with less effort.

Front firing subwoofers utilize a speaker mounted in order that it radiates the audio within the front or side of the sub woofer enclosure.

Down-firing subwoofers make use of a speaker that is mounted so it radiates downward, on the floor.

Some bass speaker enclosures also have an extra port, which blows out quite a bit of air, improving bass response in a more effective manner than closed enclosures. Another kind of enclosure runs on the Passive Radiator in addition to the speaker, instead of a port, to help improve efficiency and preciseness. Passive radiators can either be speakers having the voice coil removed, or else a flat diaphragm.

The crossover is usually an electronic circuit that tracks all frequencies below a precise point to the bass speaker; all frequencies above that point are duplicated to the primary, middle, and surrounding speakers. Typically, a quality sub woofer has a “crossover” frequency of approximately one hundred hertz. Gone is the need for those large 3 way speaker systems with 12″ or 15″ woofers. Smaller sized satellite speakers, designed for mid-and-high frequencies, that use up a lot less space and generally are now common in many home theatre systems.

Additionally, while the deep-bass frequencies reproduced by the sub woofers are non-directional (as frequencies that are at or below the threshold of hearing). It is extremely hard for our ears to successfully pin-point the direction the spot that the sound is coming from. Thats why we are able to only sense that an earthquake looks like it’s all over, rather from coming from a particular direction.

Because of the non-directional sound that is reproduced by the sub woofer, it could be placed any where in the room. However, optimum results depend upon room size, floor type, furnishings, and wall construction. Typically, best placement for a sub woofer is by the front of your room, simply to the right or left of the main speakers, or even in a front corner of the room.

Despite all the technical features and design elements of sub woofers, the sort of bass speaker you select for your system relies upon the characteristics of the room and your own preferences.