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25th 2009f September 2009
Posted in: Home Theatre
Home theater (HT) owners are in a constant search for the perfect sounding system. Part of that perfectly tweaked home theater sound is derived from subwoofers. There are three basic types of subwoofers with which HT owners should be familiar: active, passive, and ported. Each type has its own characteristics and benefits for the HT owner. Therefore, it is important for the HT owner to understand how each type can affect the overall sound in his or her system.
Most HT plans seen on paper are only two dimensions, and a theater is really a three-dimensional space. In many home theater design plans, a lot of elevation is used. There are many factors that are vertically important to the overall plan design: speaker height, platform height, seating height, speaker locations, and not only where they are in the room but also the height of the location in the room.
A HT allows viewers and listeners to experience the complete realm where sights and sounds are being distributed from all directions. The 3D aspect makes sure that everything within the HT is in the proper place.
The second reason many HT owners prefer an active subwoofer is the design itself. There is a phenomenon between the speaker and the amplifier that dramatically reduces distortion. Because the subwoofer does not need to work with a wide variety of amplifiers, they can tweak the circuit amplifier to work well with any particular speaker. There is a way to feedback part of what the speaker is producing into the amplifier so it can adequately compensate, resulting in a dramatic reduction in distortion. The technique is only possible with active subwoofers because the amplifier circuit and the speaker have to be known quantities and specifically be working together in that way, which is not possible with passive systems. Therefore, for the above-mentioned reasons, most HT owners prefer an active subwoofer over a passive subwoofer.
Creating the perfect HT space begins with a thorough analysis of the space itself. Without careful examination of the designated area, including even the smallest details, a simple project can turn into an expensive undertaking. It is recommended that a three-dimensional plan be created to reflect both horizontal and vertical objects as well as any minute features that can alter the overall arrangement of the HT space
Resource Author Francisco R. Higueras
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