you get a new speaker and it seems to take forever before you really know.... Someone on another thread commented about how break in reached a threshold .....where it occurs suddenly rather than gradually . I discounted that as BS until recently ....and it happened to me. Was playing new speakers for weeks and liking them a lot right out of the box. Suddenly, at a gig, in the middle of a song .....Boom!.... the low end just got huge and the leads go into compression. Been that way ever since. Totally weird... Not sure I like it better in this particular case. But that's another story. Now I'm really frustrated because I'm not sure I can rely on all the speaker impressions I've got from speakers I've tried in the last 10 years! But I definitely understand this Break In comment now. Another time, I put a Greenback in my BFDR. Man I absolutely loved that speaker for maybe 6-9 months. After that it just seemed to be getting too ratty for that amp that already has some breakup. Eventually I took it out. reflecting back, the speaker probably got broken in and I didn't like the broken in sound as well as the original cleaner sound. Some speakers sound great right out of the box. Some never seem to be for me. Has this "sudden break in threshold" occurred to you before?