"No, I don't think so."

Well, I know so. Unless you have a reference (which is the beauty of the system) any talk of maximum volume is meaningless, whether you think so or not. Read page 27 of the Manual, where it talks about channel calibration. The reason you hear the term "reference" is there IS a reference. If you don't calibrate to reference, any talk about relative and maximum volume is truly meaningless, because there is no reference, whether you think so or not.