The home theater receiver (also referred to as an AV Receiver) not only provides power to the speakers, but serves as an integrated control center for all of your components, often times providing both audio and video switching.
The home theater receiver (also referred to as an AV Receiver) not only provides power to the speakers, but serves as an integrated control center for all of your components, often times providing both audio and video switching.
The receiver is both the “smarts” and the “power” behind a home theater system. It takes the audio signals from all of your source components, performs any needed decoding and post-processing, amplifies the signal to power your home theater’s array of loudspeakers, and controls the playback volume. For video signal, the receiver performs the necessary switching and outputs it to your TV. With all this functionality, a receiver is one of the more complex and expensive components in a home theater or home audio system.
• The most important factor in connecting theater components today is using the newest interfaces available. High-definition televisions use an interface called High-Definition Multimedia Interface. HDMI combines digital audio and video together. If your HDTV does not have the HDMI interface, your receiver will be ready when you upgrade the HDTV in the future.
• Digital Versatile Disc and compact disc (CD) players, computer graphics cards, liquid crystal display (LCD) monitors and portable electronic devices like digicams and cell phones are all migrating to a new audiovisual standard called Unified Digital Interface (UDI). UDI is compatible with the HDMI used on HDTVs. With UDI input and output ports on your receiver, you will be able to take advantage of the latest interfaces for Dvd/Cd players and portable devices. A receiver with a UDI-out port can also connect to a UDI-enabled computer graphics card to stream television to the computer.
• The receiver should also able to accommodate optical or digital audio interfaces, as well as older style analog left/right cabling. In other words, it should be backwards compatible with older technology so that you can upgrade existing components at will.
• While stereo receivers only support two speakers, home theater receivers support surround sound, or multiple speaker systems. The most basic configuration is 5-1 surround sound, which includes five speakers and a subwoofer to deliver bass. Newer configurations include 6-1 and 7-1 surround sound, or seven and eight speaker systems respectively, with a subwoofer included in each case.
• A receiver might also support a second set of remote surround sound speakers. These speakers might be located in a bedroom or on a sundeck. Remote surround sound speakers can be activated separately from the main speaker system.
• To easily set up a surround system, look for a receiver that offers automatic calibration. These receivers come with a small microphone and front microphone port. The microphone is placed in the area where you would like the sound to be optimum, such as on a facing couch at ear-level. By engaging the calibration program, the receiver emits a series of signals and sound effects, electronically measuring when each speaker’s output reaches the microphone. The receiver’s speaker channels self-adjust so that, regardless of speaker distance, sounds reach the microphone at the same time. This creates a perfect “sweet spot.”
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