THX equipment certification standards and procedures (ISE 2006)

John Dahl explains that in the certification process, they invite corporations to bring their products to THX who work directly with the manufacturers to make the picture and sound like it was originally produced by the artist in his studio by checking hundreds of criteria. John clarifies the technical standards of the two different levels of certifications, SELECT and ULTRA, that are basically quite similar in terms of quality, the difference being in the power output available.

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