Well let's see: The level is really high. Is that what you got after calibrating the SPL to 75 dB before the sweep? :scared:
If you want to see the waterfall via the LIN setting, re-set the graph axis upper limit to 100 Hz, due to a bug in the program. Or you can use the LOG setting for viewing above 100 Hz (no bug for LOG).
Overall, response is pretty smooth, but I'll bet it sounds bottom-heavy, due to <50 Hz being so exaggerated. An EQ could help dial it down. There may be nothing you can do for the severe dip at 70 Hz.
Regards,
Wayne