Actually, the digital menu is not bypassed in 6ch bypass (or at least not part of it). Selecting 'Subwoofer: OFF' will, in fact, disable the LFE output in 6ch mode. Try it out.
However, by disabling the subwoofer, DB is gone and I believe, so too is all LFE info.
[This message has been edited by Slee_Stack (edited December 03, 2003).]