David Looser wrote:

"D.M. Procida" wrote

I don't suppose they keep on getting better, because eventually some of
the materials may start to harden or dry out. But I've definitely heard
new speakers improve significantly over a period of 48 hours or so.

More likely you adjust to their sound, just as a piece of music grows on you
the more you listen to it.

It could be.

These were new speakers, and sounded really a bit raw and harsh, and we
were talking about taking them back and swapping them for something else
a bit smoother. The next day we remarked almost simultaneously that the
sound had changed, and the rawness had gone.

So who knows? All the same, the fact that I never noticed that harshness
again even on subsequent visits suggests to me that in this case
probably the speakers had changed, even if we'd changed too.

Daniele