Cav, it's likely that your two-channel SACD is 2.0, not 2.1, and has no separate LFE channel(the disc should contain that information). As to the low bass on the two regular channels, since the information comes in from the SACD in analog form and most receivers can't apply bass management to it, the main speakers will receive a full range signal and the sub nothing, unless your player has bass management provisions(most do)and you put them into effect. Otherwise the speaker level terminals output a full range signal and the sub out outputs nothing.
