Guys, I'm a member of a FB group "DIY Loudspeakers" that is admined by some senior people.
Recently, a discussion of break in / burn in for speakers came up, and the discussion was rancorous
and shortly locked, but the opinion of at least one of the admins was that "Break in for speakers is a myth".
I've experienced driver break in over the first few hours. The bass got stronger, and the midrange got clearer for mid/woofers.
Not so much for tweeters, IMO.
What about you?
Don, Donno, or "Hey you" all work for me, But never "Mr Johnson"