A:Answer I started playing my subwoofer at medium volume for the first couple of days as I really wasn't needing to blast out sound.
The subwoofer performed nicely.
About a few days later, I was playing a movie using this subwoofer as a 5.1 system, and had the bass rattling the walls.
So, you might want to give it a couple of days starting off low to medium just to make sure that the speaker is working, and that you like the placement of where you put it in your room as far as acoustics are concerned. After you are comfortable that the speaker is working fine, and you like the placement, go ahead and blast away.
I'm not saying you HAVE TO wait a couple of days, the only reason I did was that I really didn't need or want anything quite that loud during the first few days I had it.