On the other hand, a passive Sound Bar does not house its own amplifiers, and still needs to be connected to an amplifier or home theater receiver in order to produce sound. Passive sound bars are often referred to as 2-in-1 or 3-in-1 (LCR) speaker systems in which the left, center, and right channel speakers are simply enclosed in a single cabinet with speaker terminals the only provided connections. Although not as "self-contained" as self-powered Sound Bar, this option is still desirable for some in that it decreases "speaker clutter" by combining the three main speakers into one cabinet that can be placed above or below a flat panel television set. Quality of these systems vary, but the concept is very appealing, in terms of style and saving space.
Also, Sound Bars, depending on design, may, or may not, have surround sound properties. In a self-powered Sound Bar, a surround sound effect may be produced by one or more audio processing modes, usually labeled "". The surround effect is not quite as good as a dedicated multi-speaker home theater system, but is still a viable, cost effective, and space-saving option for many consumers, especially in a smaller room or if all you desire is better for your TV without a going the full home theater system route. In a non-self-powered Sound Bar, the actual design a placement of speakers in the cabinet can provide a modest or wide surround sound effect depending on the internal speaker configuration (for powered and passive units) and audio processing (for powered units) used.
Another type of product that is similar to a Sound Bar is a Digital Sound Projector, which is a product category marketed by Yamaha (designated by the model prefix "YSP".
Self-powered Sound Bars are designed to be used as an independent audio system. This makes them very convenient as you can simply connect the audio outputs of your TV to the Sound Bar and the Sound Bar will both amplify and reproduce the sound without the need for added connection to an external amplifier or home theater receiver. In addition, most self-powered Sound Bars have provisions (such analog and digital audio inputs) for connecting one or two additional devices, such as DVD/Blu-ray Disc Player, or Cable/Satellite Box. Some Self-powered sound bars incorporate to access audio content from compatible portable devices, and a limited number can even connect your home network and stream music from local or internet sources.
|Box contents||Logik L32SBT15 Sound Bar|
|Power consumption||- Standby: <0.5>0.5>
- On mode: 20 W
|Dimensions||60 x 806 x 62 mm (H x W x D)|
|Boxed weight||2 kg|
|Manufacturer’s guarantee||1 year|