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TV:Audio Connections
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RCA – This is the most common type of A/V connection. RCA connectors are coaxial, with the signal-carrying conductor (+) surrounded by an outer conductor shield (-). RCA Connectors are sometimes called “phono plugs” or “phono jacks”. RCA audio jacks and plugs are often color-coded in pairs; Red for Right Channel and Black or White for Left Channel. (Sometimes other colors are assigned to center or surround channel RCA jacks.) |
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Phone / Mini-phone – The ¼ inch phone jack and plug got its name from its origins in early telephone switchboards. This connector is usually found on A/V equipment in the three-wire (stereo) form - left channel, right channel, and ground – as a front-panel headphone jack and the plug for a full size headphone set. Phone connectors are also commonly used in professional and broadcast equipment in a two-wire form (signal and ground) for mono signals. Identical in function to phone connectors, mini-phone plugs and jacks ( 1/8 inch ) are usually found in stereo form as headphone connectors for portable equipment and for connections to the sound card in a PC. |
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Coaxial – The identical RCA connector used for analog audio signals is also used for connecting digital audio components following the SPDIF standard. A coaxial jack can carry either a stereo or multi-channel digital audio signal and will be labeled as an input or an output. Jacks are usually color-coded Orange or Black. Though any cable with RCA plugs at the ends can be used to make digital audio connections, you should use a cable that’s specifically designed for digital audio to ensure the best possible signal transfer (75 ohm impedance). |
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Toslink (Optical) – Toslink optical ports pass the same SPDIF digital audio data as coaxial RCA jacks, but they use pulsating light, instead of electrical current. Toslink connections require special fiber-optic cables. Special care needs to be taken when handling Optical cables as dust and dirt can impede the optical link. Also avoid kinking the Toslink cables, which can render them permanently useless. |
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Spring-clip – Various types of spring-clip speaker outputs are found on less-expensive receivers and amps (and on the inputs of some entry-level speakers). They all work in the same manner: press the button or lever, insert bare wire from the stripped end of a speaker cable into the opening, release the button, and the spring-loaded clamp grabs the wire. This type of connection is considered acceptable when maximum power levels are below 100 watts. |
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Multiway binding post – Binding posts accept nearly any form of speaker wire or cable and make a solid contact over a large area. After twisting the strands tight, you insert the wire through the horizontal hole in the post and clamp it the knurled knobs by turning them down. If the wire is terminated with U-shaped spade ends, the knobs spin down to hold these flat at the bottom of the posts. Wire with pin terminators (shown) is connected the same was as bare wire. |
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Banana plug – These will simply push into the ends of the binding posts. Because of its large contact area, these are considered the ideal speaker connection for high-powered systems
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Article ID: 3061 |
Last updated: 02 Sep, 2008 |
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Views: 1624
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Comments: 0
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Knowledgebase by LG Technical Support
