update - I called logitech and they are going to send a replacement set, who knows how long it will be or how long they will last. I have to send back the control center, and get this, CUT OFF the power from the old bass and send it to them. I guess they don't want people paying $40 for shipping, and they don't want people requesting new sets if they have working ones, so now I'm stuck with a bass with no power cord and 4 sattelites with no control center.