We test the :
Beyma 6CX200nd/N
Euphoria EX6NCD
Diamond audio MP654
Rockford Fosgate TMS65
Ground Zero gzcf 6.5 spl
Hertz sx 165 neo
Mmats PA 601cx
All speakers tested using sound digital evo 800.4 bridged channel 400 watts rms .
Cascade audio 100 amp power supply
Lithium battery
Adjustable high pass filter in the amp was used (high pass settings explained in the video )