KEF announces KC62 subwoofer with new Uni-Core technology

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by Andy Bassett
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KEF announces KC62 subwoofer with new Uni-Core technology

KEF’s newly announced KC62 Uni-Core, force-cancelling subwoofer brings together three innovative technologies to create a compact design demonstrating you don’t have to go big to go deep.

When KEF recently announced its new Uni-Core technology as a means of delivering enhanced performance from an ultra compact space for its speakers and subwoofers, it promised a product would swiftly follow.

That product is the KC62 subwoofer and the surprise is that not only does it use the innovative Uni-Core design to deliver a range of bass, from deep thunder to quick and agile bass, but it also introduces two further, patent-pending developments, namely P-Flex Surround and Smart Distortion Control Technology.

KEF announces KC62 subwoofer with new Uni-Core technology
KEF KC62 Uni-Core subwoofer

Uni-Core 

To deliver the benefits of force-cancellation along with impressive performance, Uni-Core uses a single motor system for the KC62’s twin 6.5-inch driver array, whereby the voice coils are concentrically arranged. This reduces the cabinet size by up to third while still matching or surpassing the driver excursion of a much larger subwoofer, thus unlocking output and depth from less space. 

P-Flex Surround, also known as Origami Surround

P-Flex Surround is a brand-new driver surround. In order to resist the acoustic pressure inside the KC62’s aluminium cabinet without limiting sensitivity, the surround is uniquely pleated in a way that is inspired by the ancient Japanese art of paper-folding, hence the nickname, ‘Origami Surround’. The exacting design resists the internal air pressure without adding excessive mass, allowing the driver to move as required by the audio signal. This results in deeper bass extension and more accurate, bass reproduction along with reduced distortion.

Smart Distortion Control Technology 

This is a sensorless, motional feedback system that measures the current in the voice coil, detecting and correcting any non-linear distortions. This reduces the interaction between signal, amplifier and driver, decreasing the potential for distortion which results in more accurate, less coloured bass performance.

As well as these brand new approaches to to its speaker architecture, KEF has finetuned the KC62’s performance with a selection of in-house designed DSP (Digital Signal Processing) algorithms in the form of the company’s Music Integrity Engine. This includes iBX (Intelligent Bass Extension) and SmartLimiter, which continually analyses the signal to prevent clipping.

The KC62’s twin drivers are powered by 1,000W RMS (2 x 500W) of specially designed Class D amplification, which provides both control and power when required.

KEF announces KC62 subwoofer with new Uni-Core technology
KEF KC62 Uni-Core subwoofer

At just 246 x 256 x 248 mm and weighing in at 14kg, the KC62 is designed to fit in with almost any audio system and has a versatile collection of connections including RCA phono and speaker level inputs plus a line level output, while KEF SmartConnect eliminates any connection issues. The optional KW1 wireless subwoofer adapter kit makes the KC62 compatible for wireless operation too. Once set up, the five pre-set Room Placement Equalisation feature ensures identical performance no matter where you place the KC62, whether that’s in free space, next to the wall or in a corner.

The KEF KC62 has an SRP of £1,400 and comes in Carbon Black or Mineral White finishes. Availability is from February 2021. 

Source: Press release
Image Source: KEF Audio

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