at the risk of being a brb, there have been SCIENTIFIC TESTS done which show no difference in sound between fresh out of the box speakers, and ones which have been 'run in'.
Either running in is bollocks, or it works.
(Smegg Wallace The O.G. Q.R., Wed 10 Feb 2021, 9:33, archived)

Right o
www.cambridgeaudio.com/row/en/blog/how-run-speakers
(Nicki Minaj, Wed 10 Feb 2021, 9:50, archived)

k

(Smegg Wallace The O.G. Q.R., Wed 10 Feb 2021, 9:57, archived)

Even kef are laughing at you and your mate Hitler
us.kef.com/blog/some-facts-about-speaker-break-in-301371114?___store=english_brand
(Nicki Minaj, Wed 10 Feb 2021, 10:07, archived)

they make the fucking speakers
They want you to keep them u nobend
(Literally Hitler stop playing with my jewlirium, Wed 10 Feb 2021, 11:57, archived)