Hair Trick Epic Low Bass with only 2 12’s - Carlisle PA

Hairtrick demo of my 2 12w7’s in the Mazda3 - Carlisle PA 2012. When I say low I mean 17hz LOW. Currently doing 145 dB at 17hz with this setup- an impressive number at that frequency for any system, let alone 2 12’s in a trunk. Its still under construction. Song was Rockstar by Rihanna with the bass dropped to below 20hz hertz