not all that impressive if you ask me...
lets break it down
looks like the note was 71Hz
he is using 4000 watt amps, and if he was on 17v where they are rated, and if they are modded. he could be getting in excess of 16,000 watts
using 2 18s, and im sure it was in a van or SUV.
you can get to a 160 with alot less equipment than that.