KEF Kube 12b Subwoofer Speaker

The KEF Kube 12b is a powerful, sealed 12″ powered subwoofer designed to provide tight, precise bass extension in compact enclosures. Driven by a 300 W RMS Class-D amplifier with KEF’s Intelligent Bass Extension (iBX) DSP, it delivers deep, impactful low frequencies down to 22 Hz with minimal distortion. The unit includes tailored placement presets for free-standing, cabinet, or corner setups, plus adjustable crossover (40–140 Hz) and phase control, ensuring seamless integration with your audio system. With a sleek black finish and compact footprint, the Kube 12b is ideal for music systems, home cinemas, or gaming setups where space is at a premium but audio quality matters.