KEF Kube 8 MIE Subwoofer

About The KEF Kube 8 MIE Subwoofer

The compact Kube 8 MIE may not take up much space, but the bass it delivers is far from small. With an 8-inch driver, it is ideally suited for smaller rooms. By sharing the same 300 Watts Class D amplifier from its larger siblings, Kube 8 MIE exhibits unprecedented levels of control. With Music Integrity Engine®, the Kube 8 MIE is optimised to dynamically extend the bass depth.

With Kube the undeniable power of bass to transform the sonic experience emerges. Whether the immersive realms of music or the cinematic embrace of home theatre, this range of powerful subwoofers allows you to explore new depths of sound, transporting you to the heart of every performance. Enhanced by the Music Integrity Engine® (MIE) – KEF's suite of proprietary DSP algorithms, Kube delivers optimised performance that transcends the ordinary, producing unprecedented dynamic depths. A four-strong range, from the deceptively diminutive Kube 8 MIE to the behemoth Kube 15 MIE, gives options for any room size and system requirements. Multiple connectivity options and room EQ settings make installation and setup a breeze. Kube promises an epic journey to the deep, where every moment is a full body experience.

Music Integrity Engine® (MIE)

When it comes to speakers, accuracy is everything. Thanks to KEF's proprietary Music Integrity Engine, Kube delivers more depth, greater output and increased dynamics than ever. KEF's Music Integrity Engine is a proprietary suite of in-house written DSP (Digital Signal Processing) algorithms, serving as the mastermind behind the detailed and accurate sound that characterises KEF's wireless speakers and subwoofers. Tailored for each model, this ensures that every component works in perfect harmony to an even higher level than would otherwise be possible. Having learned from the development of LS60 Wireless and KC62, for Kube KEF have been able to further improve accuracy, especially at high output levels.

iBX Intelligent Bass Extension

Part of the Music Integrity Engine, iBX Intelligent Bass Extension creates an extended depth that unlocks the full potential of the custom driver. By analysing your input signal and making multitudes of tiny adjustments every second, iBX allows the subwoofer to play louder and remain dynamic at any listening level. In step with the advancements developed by MIE, the new version of iBX lowers distortion still further. The end result is simply remarkable accuracy.

Feel the Force

Kube boasts a front-firing long throw driver, producing higher output at lower frequencies. This approach creates a sensation of direct force into the room, creating a tactile, pressured, and powerful bass experience. With high SPLs and low-frequency extension, Kube faithfully reproduces the lowest octaves in both movies and music, ensuring an immersive, impactful sonic environment.

300W RMS Class D Amplifier

Optimally designed for the driver and the available acoustic volume, the 300 Watts RMS Class D amplifier in the Kube runs efficiently and cool, providing ample power for the subwoofer. It reproduces deep bass and rumble with precision and dynamics, adding intensity and realism to your audio experience.

Versatile Connectivity

With a comprehensive range of connection options, Kube adapts easily to a wide variety of audio systems. Featuring line level and speaker level inputs, it can be connected to any amplifier. KEF SmartConnect automatically determines whether a mono or stereo input is being used, optimising the gain for optimum performance. Additionally, Kube is compatible with the KW1 wireless subwoofer adapter for simple wireless integration.

3 Pre-Sets for Easy Integration

Thanks to the Music Integrity Engine, Kube features a placement-dependent EQ section that can be easily adjusted to maximise in-room performance. With three room placement setting options, Kube easily fits into any environment, ensuring consistent performance wherever it is placed, whether snugly fitted in a cabinet, against a wall or in a corner.

Power Tailored To You

Kube benefits from a flexible choice of power-on modes tailored to your system's requirements – music sense for standby wake-up upon audio signal detection, 'always on' for instant readiness, and 12V trigger for a single button switch on in an integrated home system.

Our Review

KEF’s smallest Kube powered subwoofer, the Kube 8 MIE, delivers deep, dynamic bass that pulls you right into the heart of the action, all without dominating your room’s décor. Its custom-engineered 8" driver is driven by a powerful 300W RMS amplifier, producing fast, controlled low frequencies with remarkable precision. Every component is designed and built in-house by KEF, ensuring the exceptional quality and performance the brand is known for. Perfect for smaller spaces, the Kube 8 MIE is equally at home adding impact to a home theatre setup or bringing warmth and depth to a stereo music system.

Main Features & Specifications

• Design: 8" 300 Watt Active Subwoofer
• Music Integrity Engine® (MIE): KEF's proprietary DSP (Digital Signal Processing) algorithms ensure that every component of the subwoofer works in perfect harmony
• iBX Intelligent Bass Extension: The DSP analyses your input signal and applies KEF's iBX, allowing the subwoofer to play louder and remain dynamic at any listening level
• KEF smartConnect intelligent inputs automatically detect mono or stereo and adjust the subwoofer volume level accordingly
• Sealed for greater accuracy and delicate musical detail while allowing the Kube subwoofer to be installed in a wider range of locations
• Placement Tuning Presets: Free Standing, Wall/In-Cabinet and Corner meaning the Kube sounds perfect wherever it's installed
• Acoustic Suspension (Sealed) Cabinet Design
• Front Firing 8" (203mm) Bass Driver
• Amplifier Type: Built-In Class-D
• Amplifier Power: 300 Watts RMS
• Frequency Response: 34-140 Hz (±3 dB)
• Maximum Output: 105 dB
• Variable Low Pass Filter: 40Hz - 140Hz & LFE
• Inputs
  • RCA Phono Sockets
  • Speaker Level Inputs
  • Expansion Port for KW1
• Connect to your system wirelessly with the optional KEF KW1 Wireless Subwoofer Adaptor Kit (sold separately)
• Removable Power Cable: Upgrade to a Premium Power Cable for better performance
• Included Accessories: 2m AC Power Cable, Speaker-Level Input Block, User Manual, Important Safety Information, Warranty Information
• Finish: Black
• Dimensions (WxHxD): 293 x 293 x 310mm
• Weight: 9.4 kg
• Manufacturer's Warranty: 5 Years on Passive Components & Cabinets, 2 Years on Electronics + 1 Extended Year When Registered at KEF.com

Note: Features & Specifications Subject To Change Without Notice. E&OE.