Well, today was "move my Caliber all around the room and play test tones day". The room was quite a challenge at first. The normal sub placement positions (front corner, front between center and mains) weren't working out due to room acoustics. The room is 18.5' L x 17' W x 9' H (except for a soffet for A/C ductwork around the ceiling perimeter). If my seating position was on a one foot riser, those positions would have worked out, but I seemed to be in a bit of a dead spot. I tried upside down, on it's side, facing sideways, at angles, etc and those positions just didn't work out.
The final (for now) position is by the left wall a little bit forward of seating position facing the front wall angled a bit toward center. The sound is pretty uniform throughout the room in that position. I tried it behind me on the back wall in a couple of different positions and it sounded great, but I was able to localize the sound a bit too much, so went back to the left wall arrangement.
As far as frequencies, I kept cycling through tones from 15Hz up through 80Hz in all positions. I don't have an SPL meter, but definitely everything from 45-80Hz was flat (within a few db). My room really liked 35Hz (and 40Hz not quite as much) in every location. It may have been room resonance, or it may just have been that at that frequency the sound and vibrations had more impact to me.
For those interested in the bottom end, the Caliber easily and steadily rumbled the walls at 17.5Hz (and above obviously). There was some movement at 15Hz, but it was well reduced from 17.5Hz which seemed about the same as from 20Hz on up (slight variations due to room resonance aside).
One other item people may have been curious about:
The packaging for the Caliber (and I assume other non-Conquest subs) is not palletized or crated. It is a standard heavy gauge cardboard box with strong foam corner and edge protection. Mine arrived in perfect condition (it's probably harder for the shippers to damage boxes that they can't pick up (I think shipping weight was 125 lbs).