Onkyo TX 8222 Home Theater Stereo Receiver Black TX8222

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All the different types of surround sound that are available on this receiver. When x.1 is added to the numerical number the surround sound also affects the subwoofer.

Rear Output and Input Connectors allow different output devices to be attached to a receiver. Receivers will vary in the quantity and type of rear inputs and outputs offered. Here are definitions of the most common ones: Composite (Video) A composite video connector uses a standard RCA-style connection that passes a combination of chrominance and luminance information on a single cable. This connector might be used to connect a DVD Player, VCR or camcorder. Though capable of delivering a high-quality picture, a composite video connector is not considered as accurate as either S-Video or Component video connectors. RCA (2 Audio Channels) RCA is an audio connector consisting of left and right stereo channels and is used with most audio components with analog outputs. Digital Coaxial Digital Coaxial is a type of connector that allows a receiver to accept digital signals, which produce higher-quality results than analog signals. For example, a Digital Coaxial connector could accept Dolby Digital and DTS signals from a DVD player. Digital Coaxial connectors use modulated radio frequencies (RF) and require a special cable. Another type of digital connector is Digital Optical. Digital Optical Digital Optical is a type of connector that allows a receiver to accept digital signals, which produce higher-quality results than analog signals. Digital Optical is the most common digital connector, and transmits data using laser pulses over a fiber optic cable (Toslink) that connects with a standard RCA-style jack. A Digital Optical connector might be used to connect with a DVD Player or a CD player. Another type of digital connector is Digital Coaxial. Component Video Component Video connectors use three RCA jacks. One carries the brightness (luminance) portion of the video signal, and the other two carry the color (chrominance) portion. As component video connections split chrominance between two jacks/cables, they provide higher-quality video transfer than an S-video connection. These connectors are commonly available on DVD Players and higher-end televisions. S-Video S-Video connector use a 4-pin connector with an S-video jack that transmits the chrominance (color) and luminance (brightness) portions of a video signal separately. This format reduces distortion and improves color accuracy, providing higher quality video than Composite Video, but lower quality than Component Video. These connectors are commonly used to connect to digital sources, such as DVD Players, S-VHS VCRs, and digital camcorders.

Impedance is the load value (resistance), measured in ohms, that the speakers present to the amplifier. A speaker's impedance fluctuates while playing music, but speakers are usually given a single nominal impedance rating. For optimal sound, check the impedance on your speakers, and choose a receiver will output enough power to drive them.

Using the Speaker Selection function allows you to choose which speakers use which impedance. For example, if Speaker A is 4 ohms, and Speaker B is 8 ohms, then selecting A+B will give you 4+8 ohms impedance, thus providing more power to the speakers. This is typically an option on higher-end receivers.