Driver breakin period, what’s the science?

Relative output of your driver's did not change more than a fraction of a db after the first few hours. The crossover points may have changed a very small amount. The l-pads and tone controls were not doing what you think they were.

All in a speaker changes with use, some faster and some not, mainly moving parts, followed by xover parts, cabling, binding posts.
They should sound good from day one but to reach full potential it takes some time.
Keep listening.

G

+1 audio2design! A voice of sanity among the inmates here! 

So many views. A confusing mess of heartfelt comments. Who knew it is soo complex. Everything is complex.   quantum physics is complex and so much not well understood. So driver breakin process is quantum physics. So most have no clue what’s going on.

I think making tea is easy. Maybe just a glass of water, no cubes.

Don't let the naysayers and the "wire = wire" crowd here fool you. Break in is real and depending on the speaker and the design, can be pretty substantial. Not only do driver surrounds break in, so do the electronics in the crossover. I have experienced it many times. But some here would have you believe that if they can't hear it, you can't either. All bulls&*t......

Oz