you dont really need to break subs in for spl purposes. BUt if you youre shooting 100% SQ then it's you should break them in. But yeh it's not needed for a sub to break in. The longivity of a sub does not depend on breaking a sub in. So subfanatic is right
Yehp, it isn't really needed. I also noticed though when my sub's wher brand new they didn't sound that good, or hit that hard. Then after about 2/3 day's, they wher bumpen, and sounded grate. My advice is just play them normal for about 2/4 day's, then you can do what you want.