Speaker break in/burn in can be fairly significant. The suspensions need to flex to loosen up, and good caps can take many hours to burn in. The first several hours tend to make the most dramatic difference. I used to place new speakers face down on the floor, crank em up, close the door, and let them thump for a few hours.
Okay, How Important Is Speaker Break In? (Dynaudio Contour 60i)
I have been running 25+ year old B&W Matrix 803 S2 speakers in my 2-channel system for about 15 years, and I finally treated myself to new speakers. Mock me for buying based on research alone, but I got a really good deal and just unpacked my beautiful Dynaudio Contour 60i's. The Dyn's are not broken in, just starting to play around with different songs, but I am expecting an improvement out of the box, and not getting it. They are no more revealing, and slightly harder and more jangley in the mids and highs. The bass is of course much better with the big Dyns, but the B&Ws with the Dyn Sub6 subwoofer I was running were better. I have very good equipment so it is not a matter of driving bigger speakers (ARC Ref preamp and Bryston 7bSST2 monoblocks). Unless speakers get A LOT better with break in, I thinking these Dyns may be converted back into cash. Thoughts? Thanks.