I am doing this currently .i have rebuilt many Loudspeakers
Xovets and ftiver breakin ,and Xovers much more so is very real
The metals have to stabalize, the dielectrics
Much more so teflon can tske hundreds of hours .
Capacitors go through changes. Bright when new.
Then sometimed dull then forming stability
Its bern proven many times. This applied to everything.
Digital daid by mamy companies hundreds of hours for
It is a very low voltage and takes time.