Join Date: Jan 2007
Location: Melbourne, Australia
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As you mention boondocks, THX is a certification. It is not a encoding / decoding process like DTS or Dolby Digital. Actually it is a certification that a total package complies with a minimum specification for performance in ALL areas. IE, a THX certified theatre must meet minimum requirements in many areas including screen brightness and size, projection angle, speaker positioning, noise floor levels, room isolation, etc.
Also, the particular film you are watching needs to be THX certified beginning with the post production facility environment.
True commercial THX certification also has a yearly renewal.
While there is a consumer certification for individual home theatre components, there are still WAY more parameters that ultimately determine whether you are achieving true THX specification. There is no 'magic button' that will transform your home theatre in all these areas.