@deep_333 I am not arguing at all with the measurements. Most audiophiles when they talk of breaking in what they really mean is "sounds better" The measurements changed so that means the driver now sounds better. If the enclosure was designed around the original TS parameters the driver now functions worse. Subwoofer drivers, if driven correctly, lead a horrific existence. They fail more frequently than any other type of driver. Another problem is "sounds better" is a human interpretation heavily influenced by factors other than reality. IMHO, after burn in, dynamic drivers do nothing but wear out, some more quickly than others.
Now I have to go get a tree off my driveway:-(