So sub or not to sub

Get a used REL if you are cost sensitive (or even if you're not) as they leave your main speakers unmolested yet enhanced, not unlike my cousin Shirley. You don't need the greasy digital fingers of "bass management" wrapped around the throat of your lower mids and bass to get great sound as you should simply pay attention to sub placement, the sub's frequency range, and level. Note that a good sub "charges" the listening room with the warmth of ambient and instrumental lower frequencies and makes everything sound more realistic, thus making the listener a better person.

Wolf, that's what I thought. Now - in relation the the two monitors, where's the best place Shirley would say to put the sub in the room?

Agree with Wolf, sort of. I'm not sure I agree about Shirley but, about a sub, yea. Try to get a sub with speaker level connections and run the signal out of the amp speaker taps. Phase and gain are all you really have to set. I know REL likes their x-over set below the mains low freq but, I've had success with my x-over all the way open.

Simao, try placement of the sub between the speakers and a little ahead of the plane their on.