There is a distinction between a "surround
system" and a "home theater room"; the home theater
room is a dedicated room to recreate the theater experience in the
home. A surround system is usually a room that does more than one
thing, i.e. a
family room, den or living room. The TV can usually be operated
without the sound system on, so even the system does double-duty; a TV
and a home theater. The surround system's room is sometimes known as
the Media Room.
* Receivers are defined as electronic
components that are preamp, tuner, amplification and surround
processing all in one unit.