The voice coil in the speaker is not in contact with any part. The coil is suspended in a magnetic field, the only link between the frame and the coil is the 2 thin wires and if they could find away around that they would be gone as well, so what is there to break in? Surely not the magnetic field. I have heard this BS so many times that I generally refrain from making any comments about it. But really let’s not even get into the well you have to break in an engine so why not a speaker this is just getting silly..