Since it is tough for small-sized loudspeakers to reproduce frequencies under 40 Hz, and really tough for under 100 dB, people often choose to use a loudspeaker just for this purpose. Hence the subwoofer, a kind of loudspeaker that reproduces bass frequencies ranging most generally from roughly 20 Hz to around 200 Hz. DO you need one? Depends upon how well you want to hear, if your sound is reproduced under 40 Hz.

SubwoofersÂ’ drivers, known as woofers, average between 8″ and 15″, and can run 34″ even. And drivers begin at 4;” those under 8″ generally donÂ’t reproduce lower frequencies with good quality.

Use high-powered amps with subwoofers and an electronic crossover and low-pass filter. There are two types of subwoofers; those with an amp in the subwoofer cabinet (active), and those without the amplifier (passive).

Home Theater

With regards to the use of subwoofers in home theater systems, they come mounted in a sealed enclosure. Some people like to focus attention of their systems around satellite speakers, hiding their subwoofer; hence it may be packaged within the system. Others build the subwoofer into the theater cabinet.

Why the separation? To keep them out of site, for one thing. Plus for sensitivity issues dealing with the areasÂ’ sound compatibility and mode. Some people prefer to place the subwoofer near the listener.

Bottom line is, if you want to be able to hear low frequencies, you need a subwoofer. If you donÂ’t care, donÂ’tÂ’ worry about it then.

When will this come into play? Lower frequencies are needed with older sound formats, like with vinyl records replaced with digital formats, like CDs, mainly with 5.1 formats Dolby Digital and DTS (where the “.1″ channel is for the bass frequencies, for the subwoofer), common choice of mixed artists.

Hyun Kim is a freelance writer who writes about loudspeakers, home audio and home theater related topics. He loves to visit Stereo|411 to discuss home theater stores and read about bose home theater systems.

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Typical car audio systems have small speakers with limited ability to reproduce low-frequency sounds. Car audio subwoofers can add more depth to a car audio system by reproducing frequencies below 150 hertz. A subwoofer can add strong and powerful basses to your car audio.

Most car audio subwoofers are installed in the trunk due to space limitations in the cabin of the car. Subwoofers are usually 10 inches or 12 inches in diameter although they can be as big as 34 inches and as small as 4 inches.

Wider subwoofers allow for more efficient air displacement which is critical for low frequencies.

The amplifier for car audio subwoofers can be integrated into the cabinet or installed as a separate unit. The amplifier should have an electronic crossover to filter out high-frequency sounds before the signal is passed to the subwoofer.

Although car audio subwoofers are usually round in shape, recently manufactures have been introducing subwoofers in new shapes. Square subwoofers have been released by Stillwater Designs and other companies have introduced triangular and hexagonal subwoofers. These innovative designs may be easier to install in cars with limited space, but there is no acoustical advantage to nonround shapes.

The type of enclosure for car audio subwoofers influences the kind of sound that is produced.

There are five basic types of subwoofer enclosures -

* sealed,

* ported,

* bandpass,

* passive radiator and

* transmission line systems.

For car use, the most practical type of enclosure is the sealed enclosure because it requires the minimum space and matches the audio requirements of a typical car interior.

There are many premade enclosures for car audio subwoofers on the market. Alternatively, you can have one custom-made or build one yourself. When you buy a subwoofer driver, you will usually receive a spec sheet which gives you guidelines for enclosure requirements. Also check out the spec sheets for power requirements and linear response – a flat response will give the truest sound.

Many people are tempted to crank up the sound when they have car audio subwoofers installed. Although it sounds great, take care – prolonged exposure to loud sounds can permanently affect your hearing.

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SVS PC-Ultra subwoofer.(Components): An article from: Sensible Sound $5.95 This digital document is an article from Sensible Sound, published by Sensible Sound on January 1, 2005. The length of the article is 2433 words. The page length shown above is based on a typical 300-word page. The article is delivered in HTML format and is available in your Amazon.com Digital Locker immediately after purchase. You can view it with any web browser.Citation DetailsTitle: SVS PC-Ult...

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Audiobhan subwoofers have carved a niche for themselves as the most performance oriented subwoofers in the market today. They offer a host of features including high quality sound, optimized bass effect and an astounding capability to handle power effectively. At present the Audiobhan Subwoofers are the latest craze in the digital market for their powerful performance and elegant styling. I believe the prices are quiet competitive and can help you take a decision at the snap of your fingertip.

If you are thinking that the durability is a matter of concern, think twice, for out here the Audiobhan Subwoofer range is manufactured using the best possible raw materials which are not only durable but long lasting in nature. So you can be rest assured that it would have a long lasting life.

If we take into consideration the color combinations then the colors here are rich and vibrant and they appear vivid as well as diverse. Apt for leaving a positive impact on all consumers, the subwoofers from Audiobhan are simply a treat for the eyes.

In sync with the latest designs and styles, the classy Audiobhan Subwoofers have all that one needs to make a lasting fashion statement. The patterns are rich and have all the qualities one needs to make a desired product. So over here, you needn’t worry about the product as it is always fine tuned to suit the latest market trends.

At the same time, if you have half a mind to assess the quality, then you needn’t worry, for the over here, you are bound to get the best. If you are looking to buy a subwoofer, be sure to check this ‘top of the line product’, before taking a final decision. After all, it’s best to first measure the depth of the water before jumping into a well.

So, go right ahead and explore a whole new world where there are plenty of subwoofers but very few places to clinch an ideal deal. Out here, you need to be a judge of your own actions, as the money you spend is entirely yours and the time is also your own-both, as we all know, are very precious in life.

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MA Audio MA124BPQ 1400 Watt Dual 12 Bandpass Box Car Sub Enclosure $178.88 This is a brand new MA Audio MA124BPQ dual 12" sub enclosure that retails for $399.99 plus tax. The size and shape make for easy integration into almost any vehicle space. Cosmetically, it is finished in midnight surveillance blue aviation grade carpet with a white MA Audio logo embroidered on a black background featured on both sides of the box along with a Plexiglas front panel viewing window. T...

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