20,000Watts! THIS THING GETS DOWN!!! SiXoRdEr BaNdPaSs!! FI Sp4s / Sundown Ns-1s / Yuyang Jin

Yuyang Jin’s 4 Fi sp4 15“ SUBs, In a Sixorder bandpss powerd by 2 Sundown NS-1 AMPs The best Sixorder I have ever heard, this thing gets down! and ...