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What is THX?

THX is a common—and commonly confused—buzzword in home theater. THX is an audio and video certification process for home theater products and theaters that meet a certain standard of quality. This certification is meant to ease home theater buying by identifying products that meet or exceed the high standards set by Lucasfilm’s THX department. THX is often confused with Dolby Digital or DTS formats. Often people pose the question, “Do I need THX?” The answer, quite simply, is “No.” If your budget affords the luxury of buying THX-certified components, you can be assured you are buying quality products, but they are not necessary for the budget consumer.

There are two different classifications: THX Select and THX Ultra. THX Ultra products (see Figure 2.9) meet or exceed very high performance criteria. THX Ultra products usually reside in high-end home theater components. Home theater receivers featuring THX Ultra certification can cost several thousand dollars. THX Ultra is a certification for theaters that will be larger than 3,000 cubic feet. THX Select, on the other hand, is recommended for smaller theaters, ranging in size up to 3,000 cubic feet.


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