KEF Kube 15 MIE 15" Powered Subwoofer Kube 15 MIE, the largest model in the Kube range, is engineered to provide the deepest bass for music and movies, giving you a ground-shaking immersion. Perfectly suited for large rooms, the 15-inch driver and 300W (RMS) Class D amplifier combine to deliver the most visceral bass performance. With Music Integrity Engine®, the Kube 15 MIE is optimized to deliver exceptional depth and dynamics. Product Highlights: Frequency response: 20-140 Hz (±3dB) Proprietary Music Integrity Engine (MIE) leverages custom digital signal processing algorithms to provide optimal, accurate bass response from each model in the Kube family Built-in Class D amplifier delivers 300 watts RMS Custom-designed 15" woofer Compatible with the KEF KW1 wireless subwoofer adapter kit for easy room placement iBX (Intelligent Bass Extension) digital signal processing provides deep, dynamic bass at any listening level 3 placement presets (free standing, in-cabinet, or corner) let you