Features
A typical HTIB generally consists of a central receiver unit which usually contains a DVD player (some systems separate the DVD player into a separate unit) and a radio tuner and a series of speakers for surround sound use, generally including a subwoofer. The least expensive systems usually have a passive subwoofer, which is amplified by the receiver unit. HTIB systems typically do not include a television set or monitor with which to display the visual material.
There are systems in this class that are sold without a DVD player and are designed to integrate with existing video setups where there is already one, such as a DVD recorder or a DVD/VCR combo unit. The speaker cabinets supplied with most systems in this class are generally fairly small compared to typical stereo speakers, and are meant for wall- or shelf-mounting in tight spaces. There are some systems in this class that are supplied with slim freestanding speakers that stand on the floor. This may be typical of higher-priced systems that are equipped with more powerful amplifiers or most of the "receiver-only" packages that do not come with a DVD player.
Some HTIBs use proprietary connectors between components, sometimes even combining several different wires into one connector, to reduce cable clutter and increase the ease of installation. However, this can impede interoperability between different audio/visual devices and makes upgrading certain parts impossible. This may also be used by manufacturers to limit what a consumer can do with a low-end model and encourage them to upgrade should they want more autonomy.
A few manufacturers, notably Sony, have implemented wireless connection technology for the surround speakers in this class of equipment. This technology may be available as standard with some of the high-priced models or may be supplied as an aftermarket kit that only works with selected models in the manufacturer's range. It usually manifests in a line-level feed over a proprietary wireless link to a separate power amplifier used for the surround-sound channels. This link-receiver and power amplifier can be built in to one of the surround speakers or housed in a black box that the surround speakers are connected to. Some higher-end HTIB models offer additional features such as 1080i video resolution upscaling, a 5-disc platter, HDMI inputs, USB connectivity, Bluetooth support, Wifi support, iPod dock and a hard disk.
Read more about this topic: Home Theater In A Box
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