Kube 15 MIE, the largest model in the Kube range, is engineered to provide the deepest bass for music and movies, giving you a ground-shaking immersion. Perfectly suited for large rooms, the 15-inch driver and 300W (RMS) Class D amplifier combine to deliver the most visceral bass performance. With Music Integrity Engine®, the Kube 15 MIE is optimised to deliver exceptional depth and dynamics.

Seamless elegance

The sealed cabinet design facilitates optimal placement, while the contemporary design seamlessly blends with the room's decor.

Music Integrity Engine® (MIE)

KEF‘s proprietary DSP (Digital Signal Processing) algorithms ensure that every component of the subwoofer works in perfect harmony. Features such as iBX Intelligent Bass Extension provides even deeper and precise bass at any listening level

Feel the force

The Kube features a front-firing long throw driver with a large cone area and high excursion, delivering higher output at lower frequencies. Its efficient and cool-running 300W Class D RMS amplifier further enhances performance.

Versatile immersion

The most compact model in the Kube range, perfectly suited for smaller rooms and elevates your movies, music, TV and gaming experience.

Effortless wireless integration

The KW1 enables optimal placement of the Kube without being limited by cables. High-quality wireless transmission ensures the delivery of every nuance and impact from your favourite movies and music

Well connected

Kube offers versatile connection options, including KEF SmartConnect and speaker level inputs, making connecting into any system a breeze.

3 room position EQ options

The intuitive preset options ensure excellent performance from Kube no matter where in the room it is placed.

Multiple power modes

'Auto wake up' detects audio signals for instant readiness, 'Always on' mode keeps it ready to play instantly, and '12V trigger' provides automatic wake-up

Specifications

Design
Powered Subwoofer (Sealed)

Drive units
1 x 380mm (15in.)

Frequency response
20Hz - 140Hz (±3dB)

Max output
116dB

Amplifier type
Class-D

Amplifier power
300W RMS

Variable low pass filter
40Hz – 140Hz, LFE

Input
RCA phono sockets

Speaker level inputs
Expansion port for KW1

Power requirements
100 - 240V, 50/60 Hz

Power consumption
300VA

Dimension (H x W x D) with rear panel and feet
519 x 500 x 515 mm 
(20.4 x 19.7 x 20.3 in)

Weight 
27.5kg 

What is in the box

• Kube 15 MIE subwoofer
• Power cord
• Euroblock speaker level connector
• User manual and warranty information.