"Mark Zarella" seesigfile wrote:

"Robert E. Watts" wrote in subject Do speakers "break in"
?

No, but your brain does.

I've done two experiments with loudspeaker break-in and found that there is no
performance improvement with speakers over time. It is true that if you
"break-in" a speaker fro 24,48 or 150 hours and immediately measure T/S
parameters you'll find that DCR has increased (voice coil temp rises when hot),
Fs has fallen and Vas has increased by a like amount.

However, let the speaker sit overnight and it will have returned to the
original values. Listen to, and measure, a hot and cold one and you'll find
that they measure the same (within the tolerance you'd expect from both T/S
measurements taken when off-the-shelf) and sound the same as well.

IOW, Break_In is an Audio Urban Legend