I have changed the little condensor on the motor, but i still have a problem. I Think that my amp is the problem. Because i put my home theater amp in the car to do some test and i had no more noise comming from the sub. I'll return the amp frist thing in the morning tomorow! I realy pissed about this , for the past two weeks i've been driving whitout music in the car. I have a clarion dxz845mc head unit, a clarion pro audio 320w amp,a condenser and an aluminium 12inch eclipse sub.Just ennuf to get deaf and turn my seats in massage chair