An upgrade from the Cascade 12, the Cascade 15 offers more subwoofers, larger subwoofers, and more power. Nevertheless, the Cascade 15 maintains its predecessor’s ability to reach an ultra-low frequency of 29Hz while also tapping into an ultra-high super frequency of 150kHz. In addition, the Cascade 15 also maintains a sleek, thin frame for easy installation and placement in any environment. The Infinity Cascade 15 retails for $1499.99 (versus $999.99) in either high-gloss black, high-gloss silver, or real-wood cherry veneer. Lastly, the Cascade 12 comes with a 3 year parts and labor warranty.