[buggers]

To answer the original post. I have no way to measure such things but having built 3 sets of main speakers and half a dozen subs, in every case the speakers when finished all sounded like trash to the point that I wanted to take a sledge hammer to them. After about 100 hours they become listenable and after a couple hundered hours they all start to sound decent. Now some uninformed individuals may tell you it is because I have "gotten accustomed to them" but that is nonsense. The sound changes and my wife has heard it also. There is a break in for drivers. Now subs dont seem to sound much different do to the lower freq's but I still run my 0-100Hz CD on those as well.