Question for the scientifically minded amongst you. How does burn-in actually change the sound of a speaker? I always thought that the concept of audio gear burn-in was more audiophile mumbo jumbo but a recent experience with new speakers has changed my mind. They’ve gone from overly bright ear drum scrapers to sounding great after burning in.
This is lifted from my Hifiman Sundara’s manufacturer documentation: Please allow for a period of “burn in” where you allow playback of audio for a period of 150 hours to allow the headphones to reach their fullest audio potential.