History
Early passive versions simply integrated left, centre and right speakers into one enclosure, sometimes called an "LCR soundbar". Altec Lansing introduced a multichannel soundbar in 1998 called the Voice Of The Digital Theatre or the ADA106. It was a powered speaker system that offered stereo, Dolby Pro-Logic and AC3 surround sound from the soundbar and a separate subwoofer. The soundbar housed four 3″ full range drivers and two 1″ tweeters while the subwoofer housed one 8″ dual voice coil driver. It used Altec Lansing’s side-firing technology andAdvantages and disadvantages
Soundbars are relatively small and can be easily positioned under a display, are easy to set up, and are usually less expensive than other stereo sound systems. However, because of their smaller size and lack of flexibility in positioning, soundbars do not fill a room with sound as well as separate-speaker stereo systems do.Soundbar hybrid
To take advantages both from soundbar and stereo set system, some manufacturers produce soundbar hybrids in which the soundbar represents left, center, and right speakers plus (wireless) subwoofer and rear-left and rear-right speakers. Sometimes producers make soundbars with left, center, and right speakers plus detachable charge rear-left and rear-right speakers. With the increasing availability of Dolby Atmos content since 2021, it has become increasingly important for soundbars to produce height effects. To deliver a realistic sense of height from a soundbar hybrid system, audio specialized companies such as Nakamichi have developed proprietary upmixing algorithms, using a combination of spatial-amplification, phase improvements, and height effect sound layer interlacing to deliver realistic vertical effects. Another method that soundbars may employ to deliver height effects is through the use of up-firing speakers, which rely heavily on the ceiling of the room to bounce height effects off the ceiling, towards the listener.Usage
Soundbars were primarily designed to generate strong sound with good bass response. Soundbar usage has increased steadily as the world has moved to flat-screen displays. Earlier television sets and display units were primarily CRT-based; hence the box was bigger, facilitating larger speakers with good response. But with flat-screen televisions the depth of the screen is reduced dramatically, leaving little room for speakers. As a result, the built-in speakers lack bass response. Soundbars help to bridge this gap.See also
*References
{{Reflist American inventions Loudspeakers