Meticulously crafted by Russound designers, Atmosphere features innovative driver cone technology and outstanding sonic performance in the most popular shapes and sizes. The Atmosphere line meets diverse installation requirements, from very small to extremely large rooms for both in-wall and in-ceiling applications. Our engineers used state-of-the-art modeling and analysis tools to design a new injection-molded cone technology. While many other custom speakers use commonly available poly cones, our new structural rib design provides a cone that is both lighter and stiffer. The result is improved efficiency, enhanced bass performance and greater musical detail through better transient response. The award-winning industrial design of our successful Advantage Series extends into the Atmosphere line to allow dealers, installers, and consumers to mix and match Russound loudspeakers over a broader range of price points. Atmosphere speakers benefit from the same installed look as Advantage, as well as fitting into the same cutout openings, allowing for easy upgrades at any time. When sound quality and features are paramount, Advantage becomes the clear choice. However, when dollars need to be optimized for value and performance, Atmosphere offers an attractive alternative without compromise to aesthetics or ease of installation. SPA5C: 5.25" Injection Molded cone-20mm Neodymium Mylar Dome Tweeter-80 Watts SPA6S: 6.5" Injection Molded cone-20mm Neodymium Mylar Dome Tweeter-60 Watts SPA6C: 6.5" Injection Molded cone-20mm Neodymium Mylar Dome Tweeter-100 Watts SPA8C: 8" Injection Molded cone-25mm Neodymium Mylar Dome Tweeter-120 Watts