I run a 5.0.2 system and from what I understand the LFE info is distributed to the main L/R channels. It must be because when watching a new series, The Sandman, the bass was so low and so loud that it knocked the grille off one of my VMPS Supertower III's tonight!So all the channels are full frequency which is actually what I experienced when running a system without a sub for 15 years.
The LFE seems to be an extra bass channel on top of the other channels.