His system is flexing pretty gud.
box is 37hz tuned 1.8cuft net , made outta 3/4inch chipboard and screws n loads n loads of glue
40-48hz bass is killer , although it drops down fine till 32-34hz.
Abhi amp is at 50% gain, no electrical, Headunit all options at low. Just sla +2 for clarity of sound.
Still u can c how the woofer is moving. :P.