Not doubting your message, jishaq, but it surprises me. A 200-Hz rolloff on the "5" past of the 5.1 outputs means an awfully high crossover to the ".1" subwoofer. Wouldn't directional effects, or the absence of direction for sounds in the low-midrange, be audible? Maybe someone else can clear this up.

My Pioneer DV587A doesn't seem to lack bass on its 5.1 outputs (which I use for the couple of DVD-Audio and SACD discs I have), so this puzzles me.