I just got brand new speakers and used them for one day The company said there was no break-in time requierd any way Its a 5.1 system and three of the speakers do not work any more at all and they all smell like they burned I have them hooked up to a denon 2807 I dont know if I blew them or something else happened I will contact the company tomorow I dont want to reveal the name of the company but they are high end speakers and everyone on this form speaks highly of them I cannot take them apart they are metal spheers I dont know if they are blown because they do not work at all maybe the wireing inside melted any suggestions before I call the company they say they do not replace blown speakers and I spend over a 1,000 on them I dont think that should of happened