Kube 10b

About the Kube 10b

The KEF Kube 10b is a 10-inch front-firing powered subwoofer designed to deliver serious bass extension and control. It features a sealed acoustic suspension cabinet and a custom-designed 10-inch woofer powered by a built-in 300-watt RMS Class D amplifier. The subwoofer incorporates KEF's iBX (Intelligent Bass Extension) digital signal processing technology, which dynamically extends bass depth and enhances bass precision at any listening level. It offers versatile placement options with three room EQ presets (free-standing, in-cabinet, or corner) to optimize bass performance depending on location. The Kube 10b includes variable low-pass crossover (40-140 Hz), phase control switch (0°/180°), line-level/LFE RCA inputs, and speaker-level inputs via a Phoenix connector. Its compact dimensions (approximately 14-5/8" H x 14" W x 15-5/8" D) and weight of 38.5 lbs make it suitable for mid-sized rooms. KEF designs and manufactures the driver, cabinet, and amplifier in-house to ensure integration and sound purity. The subwoofer comes with a 5-year warranty on the woofer and 2 years on the amplifier. It is well-suited for enhancing music, home theater, and gaming audio with immersive, precise bass.