Rear Speaker in ICE.....
a) Multi Media System = Surround Sound
b) Sound Quality = Rear Fill
Surround Sound
usually representative of the monophonic sound extracted from the stereo signal sent to smaller rear or side speakers used in a home theater.
REAR FILL
in autosound, the ambience created by a pair of rear speakers that helps complete the soundstage. A set of high quality components for the front powered by an external amp and a set of coax (Full Range Speaker) mounted on the rear deck powered by the head unit or small amp is a good example of a rear fill application. Rear fill speakers should be faded so that they create a richer ambience, but you should not be able to isolate any sounds coming from them. Component set speaker not adviseable..
Sountage = the sound systems ability to correctly place instruments on an imaginary soundstage; reproduction of the way the music would sound if you were actually watching the musicians play in front of you. The stage should always appear to be in front of you, with a proper "image" of where each musician is playing on the imaginary soundstage.