They have defective speakers. I have owned mine for two years and the speakers have blown twice. First time the replaced the amp, now they will not help because the speakers have a 1 year warranty. I have never had this thing past 5. The rep I spoke with said it is not defective or they would have a file on it being a recurring problem. A quick search brings up a different response with tons of people stuck in the same boat. Now it is my personal mission to make sure nobody makes the same mistake I have. Hope this saves at least a few people some time and money. Thanks.