Korkster - Give the speakers a couple of weeks. One thing I will do for some break in time is loop a CD (yes, I am old school) that has some deep bass tracks. You don't need extreme volume - just enough to get everything moving. On our actives, the bass got progressively better over the first month.
A few years ago, Danny Ritchie (well known in the DIY community) ran a test with some high quality 6.5 inch woofers he uses in some full range speakers. After 100 hours, the Fs of the drivers was lower ... all the Parameters had changed. It was easy to plug the "fresh" speaker data and the "broken in" speaker data into the modeling software and "see" that the broken in speaker had a better bass response curve.
What is your preamp?
