I was repeating one of the first comments in NetGuy's first post - at that time, he indicated that the problems he was encountering were all related to large speakers. Life has kept me from running significant tests of my 990's bass management this last month or so and my day-to-day setup (all speakers small, sub on, digital inputs with the exception of the occasionally-used 5.1 analog from my universal player) is one that I have encountered no problems with, so I can currently not contribute first-hand experience with the issues being evaluated.