I had a great experience last night, and it's making me re-think my belief that there is no such thing as a break-in period.
I was listening to Porcupine Tree "The Start of Something Beautiful" off the 'Deadwing' cd. I actually had too much bass, and had to attenuate a little. This is a first, even though I've listened to it at least 3 times previously. The soundstage and detail also seemed greatly enhanced. I think I have about 60 hours on them now, and must admit that the sound is improving- and not just a little bit.
Later that night, I convinced my wife to listen to the same track, and she was greatly impressed. She told me that she kept expecting the speakers to distort during the synth breaks, and was impressed with how clear and pleasant the sound was.
After we were done with the PT, she actually requested to listen to The Catherine Wheel 'Wishville'
So- even if the speaker improvements are more psychological than physical, the elusive WAF is increasing measurably!
-P