I’m not convinced Audysey does much with the LFE channel other than set distance and DB. It set my distance at 23’. My sub is 10’ away, so I changed this to 16’. It set the DB approximately 3 DB over the mains, which is just where I prefer it.

If you go into the manual set up screen on the 3808, you can copy the curve that Audysey created. After you copy it, you can tweak the EQ levels for each channel. There are 9 frequency ranges that you can adjust (63H, 125H, 250H, 500H, 1kH, 2kH, 4kH, 8kH and 16kH). Considering that there are only these 9 ranges that can be adjusted, I’m guessing that’s all that Adysey adjusts, and only one of them is in the LFE range.