sweet spot definition by Webster's New World
sweet spot definition by American Heritage Dictionary
sweet spot - Computer Definition
(1) Refers to almost anything that embodies an optimum combination of characteristics and qualities. As a result, it is most efficient, useful or popular, or even the most lucrative product in the line to sell. See also SuiteSpot.
(2) The optimum seating location for listening to stereo, surround sound audio or viewing 3D TV.