What kind of system is this for? Music, video games, movies? If it's for movies primarily, you may want to tune a little bit lower. A number of movies have some rumbles down in the 16-20 hz range. So not only would you want to pick those up, but most home amps don't have subsonic filters so you'd want to protect the sub a bit with a lower tune as well (though some do have a set ssf). If it's primarily for music, you may want to tune a few hz higher to help with the output in the 30s. That being said, I think my home subs are tuned to 24 hz and I like it and have never had problems .