KEF KUBE 15 MIE 15" Subwoofer

The KEF Kube 15 MIE is the most powerful subwoofer in KEF’s Kube series, designed to deliver deep, room-filling bass with precision and control. Featuring a 15-inch front-firing driver powered by a 300-watt Class D amplifier, the Kube 15 MIE brings weight and impact to music, movies, and home theatre systems — especially in larger spaces.

At its core is KEF’s Music Integrity Engine® (MIE), a suite of advanced digital signal processing that carefully synchronises the amplifier and driver for cleaner, more accurate low-frequency performance. This intelligent control allows the Kube 15 MIE to deliver both subtle bass detail and powerful low-end effects without sounding bloated or overbearing.

The sealed cabinet design helps maintain tight, articulate bass that integrates naturally with a wide range of loudspeakers. Whether supporting compact standmounts or full-range floorstanders, the Kube 15 MIE enhances the system’s foundation while keeping the midrange clear and uncoloured.

Flexible setup options make integration straightforward. Adjustable crossover, phase control, and multiple room EQ presets allow the subwoofer to be tuned to suit placement and room acoustics, ensuring consistent performance in real-world listening environments. For added convenience, the Kube 15 MIE can also be paired wirelessly with compatible KEF systems using an optional wireless adapter.

Key Features

• 15-inch front-firing driver for deep, authoritative bass

• 300-watt Class D amplification for effortless low-frequency output

• Music Integrity Engine® with Intelligent Bass Extension for accuracy and control

• Sealed cabinet design for tight, musical bass response

• Line-level, LFE, and speaker-level inputs for broad system compatibility

• Multiple room EQ presets for easy tuning

• Optional wireless connectivity with compatible KEF systems

Designed for listeners who want impact without compromise, the KEF Kube 15 MIE adds depth, scale, and realism to your system — creating a bass foundation you can both hear and feel, while remaining controlled and musical.