Originally Posted by notnyt
It could also be the 5x15" drivers absorbing some as well. However, feeling the walls flex leads me to believe they absorb a lot more
I believe you're on to something here,...wrt the expansion etc on the graphs. The levels you are using
, obviously can excite untold aspects of the environment. I'm thinking sympathetic excitation would smooth the resultant response merely by a slight spread of peak arrival times based around the fundamental at that exact moment. The wavelengths are long enough, with the freqs were dealing with in these tests, that significant destructive cancellation (or significant constructive addition) isn't going to be problematic.
I'm thinking that perhaps only a slight skewing of the peak energy, via sympathetic excitation of a myriad of room elements, would be enough to result in the response smoothing.
Is this a reasonable theory? Few rigs have the total Vd that this system possesses. Additionally, few sane
individuals tread this deep, into these playback levels, at these frequencies, and measure it! Point being, this type of data is relatively scarce.