Originally Posted by flyinion
Just wondering how many run DEQ while watching Blu Ray and if so what offset do you use?
use DEQ on Blu-Ray, DVD, Streaming, CD, SACD, or DVD-A, BUT
I play movies at within a few dB of 5 dB below Reference Level (which is near THX guidelines for my size room), and music at perceived "concert level," so there would be little or no need for low Sound Pressure Level compensation. As you say, the mastering level, even on movies, varies (perhaps due to manipulating the dynamic range), so I correct the volume -- by ear -- when the dialogue starts, or sometimes on the Main Title music. In case you are wondering, the audience can't see any volume indicator on screen, or on any of the equipment, and no glowing LEDs when I do that.
All of that being said, the main reason I don't use DEQ is that it seems to make the sound a little less clear, with a little less of what audiophiles call "air" than without it. Neither boosting the subwoofer a bit, nor using the bass tone control (usable only when DEQ is off) produces this ill effect.
I generally use Audyssey FLAT, which lets through the aforementioned "air," but there are a few movies of the multichannel magnetic era* that I know had good sound, but seem to have a little mid or high frequency distortion and/or harshness in their BD or DVD incarnations; for these, I use plain Audyssey, and it mellows them out. There are only about 8 or 10 of these, but, unfortunately, they include some classics. Some can benefit from further EQ, using tone controls, sub level, etc. How did this happen? In regard to the high frequency distortion, the two major manufacturers of the very best theater and movie studio speakers (in those days), both of which had the very same "L word" in their company names, had frequency response that dropped like a rock above 10K Hz, even though one claimed not. During much of this time, their home speakers did not have this problem. The film mixers, and moviegoers, of the day might miss HF distortion because it was attenuated. As to possible harshness that might be hidden by using Audyssey's midrange compensation, the only thing I can think of that might have happened is that the people who do the engineering for transfer ("authoring") to Blu-ray might have never experienced these marvelous, warm, magnetic soundtracks due to the inconvenience of not having been born yet.
approx. 1953 to about the mid '70s;
70mm projection continued to use 6 magnetic soundtracks for many years after.
I recommend these, for everyone:
Guide to Subwoofer Calibration and Bass Preferences
Audyssey FAQ Linked Here