How long it take to run in brand new loudspeaker?


I just bought a pair of QUAD 11L Bookshelf and found that the high is bit soft, is that due to insufficient run-in?
mark
It really depends on the speaker and how hard they're run in. 50 hours at a decent volume will make most speakers start to sound mature. Many speakers take a good 100-200 hours to really sound their best.
My experience was the same as Bufus and I have found that a few hundred hours are needed before reaching steady-state sound no matter what low number the manufacturer gives for break-in. You may just have bought what are laid back speakers to your ears. Arthur
Aren't there two issues here? Maybe some tweeters have flexible surrounds, and thus will increase in output (get brighter) with breakin; likewise, and more commonly, woofers and mids surrounds and spiders nead to flex a LOT to break in, thereby FILLING IN the bottom. Maybe some do BOTH, widening the "shoulders" spectrally, as it were?
About 500 to 1000 hours. But of course, the speakers will continue to sound better and better until they break.
For me it has always been the bass to clear up last.My Aerial cc3 sounded like there was a comforter over it for 3 days,or more. I actually put one on it and ran it loud for 4days continuously. Then there is the Korus. A dealer in a phone conversation, said this speaker improves till it has 3,000 hrs on it.