First off, thanks to all who replied.

JohnK-My room is 12x14x7.5
Raindance and 2x6-I really don't want an EQ, although before I tried changing the phase, I definitely thought about it.
Also the reason I thought that changing the phase would hurt was because when I initially set up the sub, the 180 setting gave a more distinct presence than the 0.
Once again, thanks all