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Featured Article: Audio Subwoofer Speaker:

Subwoofers are individual speaker units that are dedicated solely to reproducing low-frequency sounds, making them a very crucial part of your listening experience.

The typical frequency range of human hearing is between 20-20,000Hz. A good home theater system should be able to reproduce most of the frequencies within this range. Due to the fact that usually the center, fronts, and rear speakers in a surround sound system are usually not adequately equipped to produce those really low tones, most systems use a subwoofer. This speaker is only designed to reproduce the low bass tones and will not put out any other higher frequencies. Most really good subs are called powered subwoofers, due to the fact that they actually have their own amplifier and do not pull their power from the systems main amplifier that feeds the other speakers.

When looking for a good sub, there are 3 things to look for- size, power, and frequency range. If you have your system in a larger room then obviously there is a need to have a larger sub, such as a 10", 12", or possibly even a 15". However, you have to be careful not to get a sub that is TOO large and powerful for the room that it is in. In such a case, it will be overpowering and drown out the other speakers.

Most powered subs have at least 75watts of their own power and can go up to 500 or 600+ watts. The amount of watts combined with the various available speaker sizes will all yield slightly different depths and tones. Lastly, any quality sub will come with multiple crossover frequency options.

By definition, crossover frequency is the frequency at which an audio device (receiver/amplifier) delivers equal power to the upper and lower frequency channels when both are terminated in specified loads. Basically, this setting on the subwoofer allows you to set how much bass you want the home theater system's receiver to put out to the sub. The lower frequency setting, the lower the amount of bass that is put out. Most subs will have a turn knob that adjusts from low to high, for example, 80-160. Every receiver is different in the frequency level that it is capable of putting out to the subwoofer. However, usually the best setting would be closer to the higher end of whatever the subs crossover is. That way between the receiver and the sub, you will get the best of what the two combined can put out. Typically, powered sub also have a volume control to limit not the frequency, but simply the sound level.

Without the subwoofer in a home theater system, it would not be complete. They allow the listener to thoroughly enjoy and feel the sounds and effects, almost as if they were actually there in the movie themselves.

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Car Subwoofer Installation For The Best Sound Effects

Number of gadgets has marked their own place in the electronic market. Things like Car Audio Installation, Car Audio System and Car Stereo are very popular, similarly is the subwoofer. A subwoofer is defined as the part of the audio speaker system, which is placed in home, or auto system, reproducing the bass frequencies. The need for subwoofer is there, because small speakers are typically part of small system reproducing frequencies as low as 40 HZ, mainly when the decibels rise above 100. Subwoofer like cone subwoofer will reproduce the bass tones from about 20 HZ down to 200 HZ, the point where the sound is as much vibration as tone.

The first known occurrence in a recording was the use of the subwoofer in "Pretzel" the Steely Dan album released after 1970 when the speakers were invented. The sound is in fact produced by the drivers, ranging from 8" up to as large as 34". In general, drivers found in movie theaters, concerts, radio stations and live records in the 15 to 18 inch range. Part of the enthusiasm of a live concert is the intense vibrations emitting from the enormous subwoofers.

An auto stereo system comes from the factory usually does not include car subwoofers, san francisco car audio repair, so there aroused a need for installing car subwoofers if you are a music lover. It is common for subwoofers to be installed in the trunk of the car because better sound quality could be easily gained.

The process for installing car stereo subwoofers is quite complicated. It is recommended that you buy the subwoofer enclosures prefab. The first step is to take away the carpet or flooring material from the trunk and thoroughly clean the area. Apply sound deadening material such as Dynamat or Accumat to glue coated and cleaned metal of the trunk floor. Once the sound come, a roller will help to bond the two surfaces together. After that you can replace the carpeting. Now it's time to place the subwoofer enclosure itself. Following the instructions for the amplifier, wire the car subwoofers into the two rear audio rear speakers.

It is always wise to play around with the positioning of the subwoofer box before stable installation. This is to make sure where the best sound results occur. The subwoofer boxes can face the front or rear of the automobile with different sounding results. Once you have made the decision as to where the subwoofer enclosure will be place, drill and mount the brackets in the correct place to hold the subwoofer box firmly in place. This is how the enduring sound will come.

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About the Author

Thompson is an expert author and webmaster of Sound and Alarm website. The website having details of car stereo, car audio installation, car subwoofers installation

Is it possible to build a clean sounding audio system without a subwoofer in my car

Ok I've got a mazda3 with a very basic audio system (6 speaker set up-OEM). I'm thinking about using the JL CleanSweep CL441, a 4 channel amp, components up front and a set of two ways in the rear. I was wondering if its possible build this system without a sub? Are their any subs that are 5 x 7inch in size? Thanks folks.

Stay away from oval speakers period. They suck. If you're trying to build a decent sounding system without a large sub, it is possible, but it's going to take some work on your part. You'll still need to dedicate lower frequencies to a driver, but you can use a 6 or 7". If you live anywhere near DC I can help you out. Otherwise I'd suggest finding yourself a good installer to help you out.

THIEL Loudspeakers Expands Distribution to Include Amazon.com
World renowned loudspeaker company THIEL Audio has announced that seven models from their award winning lineup have become available through Amazon.com for the US market. These models include the architectural products, bookshelf speakers and subwoofers.

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