radiation pattern The way in which a speaker disperses sound.

RCA jack A connector found on audio and video products. Signals transmitted via RCA jacks include line-level audio, composite video, and component video.

rear-projection TV (RPTV) A video display device that projects an image onto a screen mounted at the front of the cabinet. The image can be generated by various technologies, including CRT, DLP, LCD,and LCoS.

re-equalization A Home THX technology that reduces the amount of treble on playback so that you hear a more natural-sounding reproduction when a film soundtrack is played back in the home.

resistance A measure of how strongly a circuit impedes the flow of a direct current.

resolution The quality of an audio component that reveals low-level musical information; the amount of fine detail in a video display or video source.

RGB A video transmission format similar to component video; separates color video images into red, green, and blue parts. Carried on three cables.

RGBHV RGB video transmission format with the horizontal (H) and vertical (V) synchronization signals carried on separate cables. Carried on five cables.

RG-6 coaxial cable A higher-quality version of RG-59.

RG-59 coaxial cable A type of cable that carries television or cable-TV signals.

RPTV See “rear-projection TV.”