Well, I got my BFD today and my worst fears have been confirmed. I cannot resolve the tremendous sound differences between the seating positions in my room. I've taken measurements less than 36 inches apart (two different seating positions) and the peaks and dips shift wildly. I have no trouble from 20 - 40, but once I hit 45 I'm screwed. What's a peak and a dip in one spot is reversed or shifted in the other I'm starting to think the BFD might have been a waste of money unless the idea is to create one sweet spot at the expense of my wife's spot. My sub is an SVS 25-31PCi. Blue is my spot and pink is my wife's spot 3 feet to the right. Things were actually worse than this before, but I tried to average the gaps with the BFD. I haven't used any gains because it looks like the dips in one spot are caused by equal energy being displaced to the other spot. Of course, this makes sense because the SVS is flat at the factory. The energy has to go somewhere. Any ideas? Are room treatments inexpensive?