Some do, some don't. When I buy a new subwoofer, I don't free-air it..however, I do run it on low volume for a few days before cranking it, slowly turning the volume up. Then, when the time comes...**** gets real. //content.invisioncic.com/y282845/emoticons/laugh.gif.48439b2acf2cfca21620f01e7f77d1e4.gif
