Different Video and Audio connection cables and types Component Video: The signal is split into three parts, luminance information (Y), two channels of color (Pr & Pb) - terminated by three RCA connections (or once in a while with a locking connector called BNC). The best possible connection between components. DVDs store video information in the component form - and so connecting your DVD player to the TV using a component video cable offers the path of least transformation and results in the best quality. S-Video: In S-Video, the signal is split two ways - luminance (Y) and color (C) - terminated by a single terminal that looks similar to a computer keyboard/mouse PS2 terminal. Provides a high quality connection. Composite Video: The composite video signal combines all information into a single signal path - terminated by a single RCA jack. Provides the last possible quality. More on Quality: On a normal direct view TV one may not see much difference in quality between S-Video and component video. But on large screen, RPTV and HDTV the difference will be obvious. If your TV is large RPTV or a HDTV, then you would want to connect using component video cables. If your TV is relatively small (less than 36") direct view TV, S-Video may provide the optimum quality AUDIO CONNECTIONS Analog - RCA: Most commonly used analog interconnect. Normally available as pairs of cables - Left (white) and Right (red) to connect stereo equipments. Mostly 50-Ohm cables. This is also used to connect the sub-woofer at a line level. The sub-woofer cables can be of a specialty cable - they do not connect the equipments electrically; in this case the cable will also be directional. Digital Coaxial /Digital RCA: Digital interconnects used to connect digital equipments such as DVD players. Uses the similar terminal, as the analog RCA cables, but the impedance must be at least 75 Ohm. Digital Optical / Toslink: Common optical link between digital components such as DVD, CD and MD players. Made of glass fibers, much thinner than the digital coaxial cables. Has a square plastic connector that often has cover / plug to protect the terminator when not used. Balanced / XLR: A fairly large 3-pin locking terminal, used in high-end audio equipments. Commonly seen in microphones power amplifiers to carry balanced line level analog audio signals. Rarely found with different number of pins (2 to 7). DB-25: Mostly used in the computer world as the SCSI interface, sometimes used in high-end audio equipments to carry multi-channel signal. OTHER AUDIO/VIDEO CONNECTIONS VGA/SVGA: A 15 pin D connector most commonly used to connect monitors to computers. Sometimes used in Digital TVs and projectors. Provides the same quality as the Component Video cables. BNC: Bayonet style locking connector – used in high-end video equipments and some high definition tuner/receiver. F-Type: This is 75-Ohm coaxial cable is most commonly used to connect cable TV feed to your system. Available in both threaded and non-threaded form. SCART/Peritel: – A multi pin connector commonly used in European countries to carry both audio/video signals. The same cable/terminal can be used to carry different type of video (RGB, S-Video and Composite) and analog stereo audio signals.