Kef Kube 8b subwoofer

8‑Inch Active Subwoofer with Deep, Dynamic Bass

Compact in size yet powerful in performance, the KEF Kube 8b is engineered to deliver deep, controlled bass that transforms smaller living rooms and media spaces. With its 8‑inch long‑throw driver, 300W Class‑D amplifier, and KEF’s advanced iBX (Intelligent Bass Extension) technology, the Kube 8b produces bass that is fast, accurate, and surprisingly impactful for its footprint.

Designed, engineered, and assembled in‑house by KEF, the Kube 8b ensures perfect synergy between its driver, amplifier, and sealed cabinet — resulting in a subwoofer that delivers immersive low‑frequency performance for both music and home theatre.

Key Features

• 8‑Inch Bass Driver Compact yet powerful, ideal for small to medium‑sized rooms.

• 300W Class‑D Amplifier High‑efficiency power for tight, controlled, and dynamic bass.

• iBX Intelligent Bass Extension Extends low‑frequency depth dynamically for greater impact and precision.

• Sealed Cabinet Design Ensures fast, accurate bass with minimal coloration.

• Flexible Connectivity LFE, line‑level, and speaker‑level inputs for easy integration with any system.

• DSP‑Controlled EQ Settings Tailor the bass response to your room and placement.

• Designed & Engineered In‑House KEF’s complete control over driver, cabinet, and electronics ensures perfect integration.