I have 3 spots in my room i can put my sub. I know your suppose to put the sub where you would be sitting then walk to those 3 spots and wherever it sounds best...put it there. Well i don't know what to use. I only use my set up for MOVIES, but any movies with bass....i can't really notice a diffrence in the 3 spots. I have a pretty bad ear for these sort of things. I own over 300 DvD's....so any DvD spots anyone can think of? Sure i tried with Attack of the clones...with the mines...but the bass is so short its hard to compare. I need a good solid stretch of bass to compare....i've had no luck finding anything decent to test with. I have the new Video essentials...but i can hardly hear the bass with the "Bass management" section. Just a low humming. My SPL says its at 81 DB but it doesn't seem very loud or "boomey". I have a Verodyne 10". Also....should i switch the back to "phase" and "180" back and forth as i do tests? Thanks for ANY tips or suggestions guys.