Kaz, I don't know where the hell people get this idea that speakers need to be broken in. Some audiophiles are so over the edge that they athropomorphize their freaking components. In other words they treat their speakers like they would their tendons and muscles were they running the 100 metres.

Get real folks! A piece of magnet and some paper/silicone does not need to stretch out to work. So my answer is, NO, you don't need to break in speakers. It's a big myth.