INVISIBLE SUBWOOFERS Pair in Box!!!! The Stealth Acoustics Model B30G is a two-panel monaural subwoofer speaker system that becomes completely invisible after installation. Ideal for any surround sound, foreground music or whole-house audio system that needs extra bass output, each B30G panel incorporates two acoustically coupled, high-quality, high-power 8 (203 mm) cone woofers. B30G panels may be mounted separately or stacked to achieve desired acoustical results. Stealth Acoustics recommends the companion Model SA255 250-watt subwoofer amplifier/crossover as a matched amplifier for the B30G subwoofer speakers. Stealth Acoustics also offers a line of full-range speaker panels that when combined with the B30G, deliver a complete, totally invisible audio solution. The B30G has a rigid frame that attaches directly to standard structural framing. The paintable active diaphragm face is bonded to the frame of the speaker panel, creating an active area surrounded by a stable mounting area. It may be installed in either the wall or ceiling and on-site finishing options include latex paint, light wallpaper, fabrics and selected texture coats. There is no need for special vellums or other nonstandard wallboard finishing materials. Advanced finishing methods may be supported using special technique