i have 2 of them runnin on A 3000d in a prefab for now till i build a new box, and im my rear window flexes, whole roof flexes wipers move everything flexes. on a shitty hifnics 3000d. cant imagine what it will do on a tuned box with my 150.1 ill be getin soon. my buddy has 2 of these n a camaro in a tuned box and they hit so hard and clear the bass sounds really , i cant explain the sound of the bass, just deep as fuck and clear its a different sound of bass. it makes my body move. and hes puttin like 2k into each one. daily no problems .