Breaking in speakers, for a second time?

[dingus]

i have heard that rotating the driver 180º can sometimes correct "cone" or "basket sag".

i have a pair of Wharfedale W-60D's (made in 1968) that were dormant for a number of years. when i first got them they sounded tinny and distant. after a few days they began to "wake up". it took a few weeks of steady use before they sounded right.