if you want to compare apples with apples well heres my two cents worth....
it was my experience that with different conditions comes different settings, in one set having the sub in a corner with a certain setting made it sound boomy, in an other sound almost absent, there are really too many variables to put any kind of setting on a sub as reference( thats why they are there to begin with) the variables can be the following... the electronics, room size, in the room.. the type of furnishings, speaker placement. for any settings to be of reference all of the variables would have to be exactly all the time...
....just my 2 cents
