WHAT WE TEST

THX engineers complete hundreds of different scientifically-formulated tests to ensure the highest audio-visual standards possible.

testing loudspeakers

REFERENCE LEVEL VOLUME

All THX Certified preamplifiers must be able capable of playing at THX Reference Level volume when used with THX Certified loudspeakers.

THX PREAMPLIFIER FEATURES

RE-EQ

Many movie soundtracks are mixed in studios for playback in large cinema auditoriums with an array of speakers. When played on home systems, they may appear abrasive and edgy. Re-EQ establishes a more accurate tonal balance when enjoying movies in your home.

TIMBRE MATCHING

Your ears hear different tonal qualities in sounds coming from different directions. Timbre Matching restores the frequency balance between your front and surround speakers—ensuring seamless and smooth panning between the front to back of the room.

BOUNDARY GAIN COMPENSATION (BGC)

Sitting near a wall may result in increased acoustic levels at the lower frequencies. BGC corrects the way low frequency sound is perceived when seated near a wall. This results in a more accurate bass response.

THX LOUDNESS PLUS

THX Loudness Plus™ is a volume control technology featured in THX Certified Dominus, THX Certified Ultra and THX Certified Select AV Receivers, and preamplifiers that automatically adjusts the front-to-back speaker level relationship as you turn the volume down. With THX Loudness Plus, home theater audiences can now experience the rich details of surround sound at any volume level.

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