As show in the speclab plot, the opening sequence of the movie has five distinct tones recorded very hot.....around 120 dB. The tones are at 30, 25, 20, 15, and 10 Hz. If you are listening at reference level and your subs are not "farting", hitting limiters, or bottoming out, then it is likely because you have four or more very high quality 18" sealed subs. If not, then your sub(s) are either not playing the frequencies, or the limiters are squashing output before the drivers can bottom out. But I am sure this scene causes all but the most capable of multi sub systems either hit their limiters, or fart.