Rick, those peaks in the blue line(I was kidding about whether it was the after result, of course)are about what would be expected from your room dimensions. Both the 20 foot length and width would lead to modes in the high 20s(1130 feet per second/40 feet~28)and the peak in the low 60s area would correspond to about a 9 foot floor to ceiling mode(1130/18)which may be about where the subs are located.
Yes, I certainly interpreted Dennis's curve to be that of his subs alone, but Peter or someone else who was present can clarify that. The reason why I thought yours was also that of the subs alone was that I was interpreting the gentle slope over about 90Hz as being simply the natural rolloff of those subs. I don't follow this "house curve" concept and don't understand why the speakers should be at a lower level.
