Definitive Technology IW Sub 10/10 Fully-Enclosed In-Wall Subwoofer Open Box (Each)Enjoy deep high impact bass without using any floor-spaceFits in standard new or existing wall constructionFully enclosed design ensures perfect results in any wallOne 10 inch active subwoofer driver pressure coupled to one 10 inch Ultra Low Bass radiatorUse with Definitive SubAmp 600 only (sold and packaged separately)The IWSub 10/10 is a completely self enclosed in-wall subwoofer for use in whole house distributed music or stealth home theater installations. It