THX CERTIFIED LOUDSPEAKERS

With home theater, sound is everything. Crisp clean audio drives the emotional depth, texture and immediacy envisioned by the artist. THX Certified Loudspeakers pass hundreds of lab tests to guarantee precisely this level of performance every time.

WHAT WE TEST

THX engineers complete hundreds of different scientifically-formulated tests to ensure the highest audio visual standards possible. Key tests in this program are as follows:

AXIAL FREQUENCY RESPONSE

This describes a loudspeaker’s ability to reproduce audio accurately. Our test confirms the axial frequency response is balanced and flat.

VERTICAL AND HORIZONTAL DISPERSION

Not everyone gets the middle seat when watching a movie. So we test the off-axis response to make sure it is smooth with no audible comb filtering, making every seat in the room the sweet spot.

OUTPUT VERSUS DISTORTION

This test ensures the speaker can reach the high volumes necessary to achieve THX Reference Level without creating audible distortion or artifacts.

Performance Class

THX Certified Compact products for smaller sized rooms, up to 1,000 cubic feet in size, with an 8 foot viewing distance from the screen.

THX Certified Select products are for medium sized rooms, up to 2,000 cubic feet in size, with a 10-12 foot viewing distance from the screen.*

* Previously known as Select2

THX Certified Ultra products bring the cinematic experience to larger home theaters, 3,000 cubic feet in size, with a viewing distance of 12 feet or greater from the screen.*

* Previously known as Ultra2

THX Certified Dominus products are for expansive home theaters spaces, 6,500 cubic feet in size, with a 20 foot viewing distance from screen.

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