KEF KC62 Subwoofer: Dual Uni-Core speaker in aluminum housing

The new KEF KC62 subwoofer uses Uni-Core technology, which, it is claimed, has significantly reduced the size of the novelty. We have already written about this architecture, in which a pair of oppositely directed speakers uses a common magnetic system for two coaxial sound coils of different diameters.

In addition to the Uni-Core, the KC62 subwoofer has received other proprietary technologies. First of all, it is the “pleated” shape of the external suspension of both P-Flex Surround diffusers, nicknamed “Origami Surround” for its shape. KEF assured that this suspension better resists the acoustic pressure inside the case, without limiting the sensitivity and maximum amplitude of the speaker.

Another technology — Smart Distortion Control — reduces nonlinear distortion, acting similarly to the EMOS (electromechanical feedback) system. However, to measure the displacement of the diffuser, it does not use any additional sensors, but “simply” measures the current in the sound coil.

The KC62’s built — in Class D amplifier receives a signal from the DSP processor, which has embedded signal processing algorithms such as the IBX (Intelligent Bass Expansion) or SmartLimiter components.

The body made of extruded aluminum made it possible to further reduce the size of the sub. The result of all the efforts was the following parameters: the frequency response of 11-200 Hz (±3 dB) and the maximum sound pressure of 105 dB were declared.

The novelty received flexible connectivity options, including compatibility with the KW1 wireless adapter kit. A line-out with a high-pass filter is also provided, and KEF SmartConnect technology will solve connection problems.

The KEF KC62 subwoofer in the colors “Carbon Black” and “Mineral White” will be available in February. In Europe, it will cost 1,400 euros.