Boy I was about to buy a pair to replace my 5200 rears.I have played my 8Ks at 90db longer then 30min no sign of running of steam at all and they sound much better at higher dbs then let say 65dbs.I think Mr Meridian one time mentioned the same when got his 8Ks. I guess you have to go to an ear doctor for checkup. Just kidding.