well , this unit be great until it die . now , like a majority of people who have review this , I be have the exact same problem . I turn it on , it be good for a few moment , -lrb- usually less than a minute -rrb- , and then I hear some thump from the sub and deadsy . my guess be it be the power supply or maybe the cooling system , either way , there be a common theme among these unit , whatever be defective in mine , be most likely defective in everyone els .