Thanks again for all the helpful replies.
What I was intending to ask was not so much on how to maximize my sub's potential, but more along the lines of how not to have my sub's placement/physical presence have a negative effect on the imaging & sound staging of my speakers.
@ghdprentice I still haven't watched the youtube yet (in a moment I am heading out into the garage on still another project) but I intend to watch it before I do some listening this evening.