Eddie,

The acoustic treatment items I have described to you in the past are well documented physics/acoustics behavior that are tried and true. I could break out the Euler's formulas and teach the room acoustics portion of my master's program, but I think that would quickly bore folks to death.

The room does matter when you mix. Your monitor placement relatively to walls and other reflective surfaces does matter when you mix.

My mentioning of using some reference recordings earlier in the thread should help you to see how they translate to the various playback systems you employ. Put your mixing of songs aside and do that homework first.

Try to avoid some of the no-no's of monitor placement - one of them being too close to walls and or reflective surfaces. Some things that can happen - too close to walls - you might be over emphasizing the room acoustic modes (translation - your mix will be bass heavy), too close to a reflecting surface that is not a wall - you can comb filter your mix very easily and it messes with your ability to properly eq mids. Comb filtering results when there is basically a strong time delay of a signal arriving at your ears at the same time as the direct signal, causing constructive and destructive interference based on the time difference of the reflection/direct relationship. One source of this is mixing with monitors place directly on the meter bridge of a large mixing desk. Yes, you will see SOME pros put their Yamaha NS-10 monitors on the bridge. But they are getting strong reflections off the mix desk surface. In your posts from maybe a year ago, I seem to recall your monitors being quite close to your angled ceiling in your room. It was a recipe for comb filtering at your mix location.

You can't fix all of this. Period. But you can work with reference recordings to get an idea how they sound on all the different systems you have at your disposal.

You can fix some of it. It's worth the effort to do so to eliminate as much of the distracting anomalies as possible.