Does anyone know what Yamaha means when it says its new A/V receivers have "linear damping factor." It explains this by saying damping is applied across the audible spectrum, but I would have thought that would be the case with any damping applied. Why the "linear"? Also I note that a number of the new models, even more expensive ones, state the damping factor is 80, while with more expensive or top-of-the-line models in the past it was 200. I realize that the damping at the speaker will be lowered by the size of cable used, and this normally will lower it considerably, but that appears to leave 80 as far less effective than 200. How much should one worry about damping factor?