KEF KC92 Subwoofer

About The KEF KC92 Subwoofer

When it comes to bringing the bass, the KC92 subwoofer excels. Compact and robust, its optimised performance now propelled by the Music Integrity Engine® (MIE) for even cleaner, more detailed sound. Surpassing expectations for its size the KC92 achieves powerful, quick articulation through a dual driver in a force-cancelling configuration, cutting edge technologies from KEF's award-winning loudspeakers. An immersive, ultra-dynamic listening experience for both music and movies, the KC92 sound goes beyond sensation.

Music Integrity Engine® - Precision DSP for the KC92

Accuracy is everything in a subwoofer, and the KEF KC92 subwoofer delivers thanks to KEF’s proprietary Music Integrity Engine® (MIE). This in-house DSP suite optimises every component, unlocking deeper bass, greater output, and improved dynamics while keeping sound controlled, detailed, and true to the source.

iBX Intelligent Bass Extension - Deeper, Dynamic Sound

With iBX Intelligent Bass Extension, the KC92 analyses your input signal to unlock the full potential of its custom drivers. The result is extended depth, louder playback, and dynamic bass that stays powerful and controlled at any volume.

P-Flex Surround - Origami-Inspired Precision

The patent-pending P-Flex Surround, inspired by Origami folds, resists internal air pressure without reducing sensitivity. This unique design allows the driver to move with precision, producing deeper extension and cleaner, more detailed bass.

Dual 9-Inch Drivers - Distortion-Free Depth to 11Hz

The KC92 features two 9-inch hybrid drivers with aluminium skins and paper cones, supported by powerful motors and vented voice coils. This design ensures linearity, ultra-low distortion, and bass that extends down to 11Hz with scale and authority.

Force-Cancelling Design - Power and Precision in Harmony

Positioned back-to-back in a force-cancelling configuration, the KC92’s dual drivers eliminate cabinet vibration while maximising accuracy. This clever design delivers immense output, up to 110dB of sound pressure, from a compact, sealed cabinet.

1000W of Class D Amplification

The KEF KC92 is powered by 1000W of Class D amplification is 500W dedicated to each driver. This ensures total control, razor-sharp timing, and the ability to unleash sudden bursts of power exactly when the music or movie demands it.

Flexible Connectivity for Any System

With both line-level and speaker-level inputs, the KC92 integrates easily into almost any audio setup. KEF’s SmartConnect automatically optimises gain for mono or stereo input, while a line output with High Pass Filter (HPF) allows seamless system integration. The KC92 is also compatible with KEF’s KW1 wireless adapter for easy cable-free setup.

Room EQ Presets for Any Placement

Wherever you place it, the KC92 subwoofer adapts with five placement EQ presets - free space, against a wall, in a corner, inside a cabinet, or apartment mode. Powered by MIE, these presets ensure consistent performance in any environment.

Customisable Power Modes

The KC92 offers three power options: 12V trigger for auto-wake with connected devices, music sense to activate on audio signal detection, or always on mode for instant readiness.

Easy Firmware Updates via USB-C

Stay future-ready with the KC92’s USB-C port for convenient firmware updates, ensuring you always have the latest performance enhancements.

Sleek Design - Built to Blend In

The KEF KC92 sounds as good as it looks. Its compact sealed cabinet enhances speed and clarity while a low-profile heatsink, inspired by the LS50 Wireless II, maintains optimum performance. Available in Black Gloss and White Gloss, its timeless design fits seamlessly into any interior.

Our Review

The KEF KC92 Subwoofer sets a new standard in delivering exceptional bass performance in a compact and robust design. Enhanced by the Music Integrity Engine® (MIE), this subwoofer goes beyond expectations, providing a powerful and articulate sound experience for both music and movies. The proprietary DSP algorithm, MIE, ensures accuracy and depth in sound reproduction, while the iBX Intelligent Bass Extension unlocks the full potential of the custom drivers. The proprietary P-Flex Surround, inspired by Origami, resists acoustic pressure without compromising sensitivity, resulting in deeper bass extension and more accurate reproduction. With two 9-inch drivers featuring a hybrid structure, distortion-free depth is achieved, reaching depths as low as 11Hz with fluidity and scale. The force-cancelling configuration of the drivers maximizes accuracy and detail while minimizing cabinet vibration. Boasting 1000W of Class D amplification, the KC92 combines immense power with precision, offering three power modes to suit any system. With versatile connectivity options, tailored EQ settings, and a sleek design, the KC92 is not just a powerhouse of sound but also an aesthetic addition to any audio system.

Main Features & Specifications

• Design: Powered Subwoofer
• Acoustic Design: Force Cancelling
• Drive Units: 2 x 9" (229mm) Drivers
• Frequency Response (±3dB): 11Hz – 200Hz
• Max Output: 110dB
• Amplifier Type: Built-In Class D
• Amplifier Power: 1,000 Watts RMS (2 x 500W RMS)
• Variable Low Pass Filter: 40Hz – 140Hz, LFE
• Inputs
  • Expansion Port for KW1
  • RCA Sockets
  • Speaker Level Inputs
• Power Requirements: 100 - 240 V ~ 50/60 Hz
• Power Consumption
  • 1,000W (operating power)
  • <0.5W (standby power)
• Connect to your system wirelessly with the optional KEF KW1 Wireless Subwoofer Adapter Kit (sold separately)
• Removable Power Cable: Upgrade to a Premium Power Cable for better performance
• Available Finishes: Gloss Black or Gloss White
• Dimensions (WxHxD): 330 x 352.5 x 360.5 with rear panel and feet
• Weight: 20 kg
• Manufacturer's Warranty: 5 Years on Passive Components & Cabinets, 2 Years on Electronics + 1 Extended Year When Registered at KEF

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