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Noise Criterion – NC – level is a standard describing relative loudness of a space within a range of frequencies. It was established in the U.S. for rating indoor noise such as the noise from air-conditioning equipment or similar. In Europe it is common to use the Noise Rating Curve – NR. The method consists …

WHAT IS NC-30?

THX Certified Audio products are designed to let you experience movies the way they were meant to be heard. On every THX Certified AV Receiver the “0” on the volume dial represents THX Reference Level, the exact volume level used by the moviemakers and sound artists in the studio. For manufacturing receivers and speakers, achieving …

WHAT IS THE REFERENCE LEVEL?

There is a downside to watching all of your films at Reference Level—it is often too loud for your neighbors. With lowered volume levels, bass sounds, surround effects and other sound elements can be lost or perceived differently. To correct this, THX developed a technology called “THX LOUDNESS PLUS“, which lets you experience the rich …

WHAT HAPPENS WHEN I LISTEN BELOW ZERO?