The extremely thin Infinity Cascade? Model Fifteen powered subwoofer features an 800-watt amplifier to deliver deep, powerful bass with dramatically reduced distortion for an incredibly lifelike sound. The Cascade Model Fifteen also includes Infinity’s proprietary Room Adaptive??Optimization System (R.A.B.O.S.) and test measurement kit, which allows you to optimize low-frequency performance to match your unique living environment. The Cascade Model Fifteen is available in a choice of real-wood cherry veneer, high-gloss black or high-gloss silver finish.