Audio Connections

May 20th, 2010 - Posted by Tom in Tutorials


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1. RCA Connection –”RCA” is the short name of the Radio Corporation of America, which was the first to offer this type of connection to allow mono phonograph players to be connected to amplifiers. This is the most common audio input on TVs and many receivers. Signals are sent over two cables (stereo). Signals are analog and quality depends on the quality of the cable and the equipment. The RCA connectors are usually coloured white for the left channel and red for the right channel.

2. Mini-Plug – (3.5mm) This is the most common output on PC sound cards. It is basically the same format as RCA except it is combined into one connector and cable. Some sets offer a 3.5mm input but it is more than likely that one will need a 3.5mm to RCA cable. This type of connection transmits analog mono/stereo stereo audio signals and it doesn’t support digital audio or surround.


3. Coax Digital – This connection sends signals over a single 75OHM coaxial cable with RCA connectors. The difference between Coax and RCA is that the first one carries digital signals instead of analog signals. They also have a larger bandwidth than a normal RCA cable. It is the best way to go if you have a sound card with a digital output and a receiver with a coax input.

4. Optical (TosLink) – This connection sends signals over fiber-optic cable using light pulses. Audio quality is virtually identical between optical and coax connections. Optical signals can be sent over very long distances and it is usually cheaper than coax and repeaters. if you don’t have HDMI as an option, then an optical audio cable is a good way to transfer the audio between devices. You will be able to hear standard stereo audio and 5.1 surround sound transmissions over an optical connection.

For more details you may consult this VIDEO TUTORIAL.


See us offline if you need additional information about setting your audio connections.

Eyepartner Team

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