speaker break in volume level

Just turn on a radio station at medium level while at work and let it do its thing, no drunk listening levels needed.

My recommendations are to break-in the speakers as you are going to listen to them. Higher volume levels with dynamic music will help loosen up the surrounds much quicker.
I go with whatever my ears can handle.

I believe the volume level equates to the specific speaker. My Zu Definitions, though I listen at "normal" volume, (acutally very low, late at night and early in the 'morn) required very high volume levels for a very long time for break in. This was suggested by all who owned them and the Zuboys, as well. Other speakers I have owned I broke in at moderate volume levels--a tad louder than I would normally listen. Leave your rig on when you go to work (if your house is vacant during the day) if the loudness is a bother when you're home. Even if you're leaving the house for a couple of hours let it rock. This saves your tympanics.