Ok wow check this out...I havent had a chance to run waterfalls yet....there's some kids playing music outside my window.
But what I did do was something I nvr tried before. I looped REW's "log sweep" in the generator between 30hz-450hz and held an SPL meter at my listening position. I watched it peak and dip in accordance with my measurements found here
But then what I did was place the SPL meter at different spots/corners and ran the same log sweep (Glenn, I know this is similar to ur flicker wave test, and really spawned this idea). I found a HUGE peak around 60-75hz down around the floor/wall corners, particularly on the left side of my desk. Then I used REW's generator to just run a sine wave, starting at 60hz, and then I slowly incrementally raised the freq while watching the meter. I was able to determine that 62hz rang the loudest.
With the sine wave still emitting at 66hz, I returned to my listening position and instantly noticed how quiet it had gotten. I stuck my head down by those floor/wall corners again and WOW....pretty loud! The difference was so much, I had to adjust the rotary knob on my SPL meter to get an accurate reading or else the dial would fly off the scale.
So what does this mean now? If I can contain/trap that 66hz area down by the floor, will it bring it back up at my listening position? Are the freqs stacking there, and trapping them would give me a more even response?
THANKS!! Gonna keep working some more...