» Home Audio » Home Video » Custom Home : Multiroom Audio Video : Builiding a New Home : Dr Hook Up : Terminology : Links » Mobile Entertainment » A/V Furniture » Contact » Home		Custom Home / Terminology What is a Source? An audio or video unit. (ie: a CD Player, a DVD player, etc.) What is a Zone? A zone is one area or audio or vide. (Typically a room). What is multi-source audio/video? Multisource allows you to listen or watch one source in one zone while listening to another source in another zone. What is IR? IR stands for infrared and is what most remote controls use to communicate with receivers. Why would you use and RF remote? A radio frequency (RF) remote allows you to have full control with one remote throughout the entire house (without having line of sight to the source.