KEF Kube 12 MIE 12" Powered Subwoofer Kube 12 MIE is designed to deliver rich and powerful bass, creating a heart-pounding rumble for your favorite music and movies. It features a large 12-inch driver and a 300 Watts Class D amplifier. With Music Integrity Engine®, the Kube 12 MIE is optimized to deliver outstanding level of depth and dynamics. Product Highlights: Frequency response: 22-140 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 12" 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 choose your sub's location for optimal bass performance Variable low-pass crossover (4