What Kind of Cables Do I Need?

Cables for your television fall into three broad categories: digital, component and composite. Digital cables are the best option. Using non-digital cables means your signal will need to be converted to analog to pass through the cable, and then be converted back to digital when it reaches your high definition television, which results in a loss of quality.

Digital

HDMI cables are the best option available for connecting your TV to Disc players, cable boxes, satellite receivers or gaming systems. HDMI stands for High Definition Multimedia Interface. An HDMI cable will carry a 1080p signal and 5.1 surround sound audio together on a single cable, without losing any audio or video quality because the cable is digital.

Digital audio cables transfer audio (not video)  in a digital format. If you have a home theatre system (external speakers), it is best to run a digital audio cable from the television to the stereo system.

Component

Component cables are the second-best option if HDMI is unavailable. These cables are a bundle of five wires that have RCA plugs on the end. RCA plugs are the type that you might use to connect parts of a stereo system together that plug into the little red and white donut-shaped holes on the back of your CD player. The five wires in a component cable are divided into three for video (Red, Green and Blue) and two for audio (usually Red and White). The video wires transfer red, green and blue video signals separately and the audio wires transfer left and right audio. Because the video colours are kept separate, or in components, they produce better images than composite cables, which mix (compose) all three colours into a single signal passed over a single wire.

Composite

Composite is a word used to describe a variety of cables. Coaxial cable is the old style of television cable with the screw-in end that you attached to the back of your TV on the threaded silver post that stuck out the back. RCA cables that had three wires (Red, White and Yellow) passed audio on the red and white wires, while all the video passed through the yellow wire. S-Video had a round plug with four wires positioned inside. All of these cables are called composite, because they combine the three colours into a single wire. They should be avoided if at all possible, because they do not produce as good a picture as the newer styles of cable.