Your speakers will definitely have a break in period. The voice coils have to loosen up. Unless some break in was done before boxing I doubt 20-25 hours will do much, you'll hear them coming in some after about 100 hours.

I don't remember my Revels having a real long break in but I did play the tuner on a mono station for about a week while at work. I had a set of Dynaudio speakers that took months. I knew what to expect as I auditioned a pair but I think I drove the dealer crazy with questions until they finally began to come around.