Gonk, when I use the Sound & Vision Home Theater DVD setup in 6CH direct I get nothing on the sub. In any other surround formats, the sub works fine. Is there something that would cause this internally through the 950? I know you mentioned the sub must be turned on. It is. Does the Bass Management have to be in the up position thus summing the freq and sending to sub. I should be able to send full freq. to speakers if they can handle load. ???