Crystal CMP's are excellent subwoofers, and a 10" will work perfectly in your .5cuft enclosure. I used to be a sales rep for Crystal many years ago, very, very good stuff //content.invisioncic.com/y282845/emoticons/yumyum.gif.0556df42231b304b9c995aefd13928a8.gif//content.invisioncic.com/y282845/emoticons/thumbsupwink.gif.129404938effda6ad9cca39e7f4b58a3.gif