It is a Full-Range High Performance Dual-Port In-Ceiling Loudspeaker gives you the flexibility to use this practically invisible speaker in more intense applications, as side or rear surround speakers in your home theater, for instance. Featuring the ultra-responsive and detailed ring radiator tweeter, found only on true audiophile loudspeakers (and never in compact built-in speakers), this in-ceiling speaker disappears into any decor, without sacrificing the performance you demand. The space-saving rear mounted oval woofer, combined with built-in dual bandpass porting, adds deep bass to a colorful full-range palette.