Dual band pass bass ports are highly efficient in small enclosures, and smoothly funnels the angled woofer's low frequencies down around the driver array. Vanishing Series built-in speakers feature our exclusive wafer-thin Sheer-Grille, a magnetically-secured grille that protrudes only 7mm from its surroundings. With a Vanishing Series in-wall center channel speaker, you have the centerpiece of a world-class stealth home theater. All you see is screen, and all you hear is crystal clear dialogue, dynamic detail and directional effects. Frequency Response: 40Hz - 20kHz. Equipped with one 6.5-inch dynamic-balance, polymer-composite cone with a rubber surround. Pair of in-ceiling/in-wall speakers with a round shape and flush design to mimic the look of an unobtrusive recessed lighting fixture.