KEF Introduces KC62 Uni-Core Subwoofer

After teasing a new subwoofer-related tech in an announcement last week, KEF has revealed details of the first product to feature its Uni-Core technology: the KC62 subwoofer. According to the company’s release, the KC62 actually incorporates three new tech innovations, all packed in a curved extruded aluminum enclosure measuring a mere 9.68 x 10.07 x 9.76 inches.

As noted in our earlier post, Uni-Core uses dual opposed “force-cancelling” drivers that are concentrically arranged and share a single motor. According to KEF, this design “allows the cabinet size to be reduced by over a third while equaling or exceeding the driver excursion of a much larger subwoofer.” The KC62 also uses an “Origami” surround that resists pressure within the sealed cabinet without restricting sensitivity. Tech innovation number three is a Smart Distortion Control motional feedback system that reduces “signal abnormalities” by “measuring the current in the voice coil, detecting, and then correcting any non-linear distortions,” according to KEF.

Also contributing to the KC62’s performance is a custom-designed DSP called KEF's Music Integrity Engine with Intelligent Bass Extension and SmartLimiter algorithms, as well as a pair of 500-watt class-D amps to independently drive the subwoofer’s dual force-cancelling drivers.

KEF’s KC62 Uni-Core Force-Cancelling subwoofer is available now in your choice of a Carbon Black or Mineral White finish for $1,499.99 each.

For more info visit KEF’s U.S. website.

AXington's picture

I am really looking forward to reviews and a test drive of this thing. What they're claiming is basically that they're breaking the laws of physics here, at least as we understood them previously. The old adage is that you can have it be small, low power, and have good bass performance, but not all 3. This does technically have 2 500 Watt amps though, so not sure if that means they sacrificed power efficiency and went small and good bass, or if it would take more power normally in a form factor that small.

Dealzguy18's picture

The driver configuration may be new, but such sub design ain’t new at all. In fact Velodyne and Sunfire have pioneered this long back and recently Golden Ears and Martin Logan. You need surface area to push air... but would be interested to see the reviews and tests

bsher's picture

I am also looking forward to reviews. Very few of us have the space for one or two of the typical ottoman sized products reviewed here and elsewhere. Now, if Totem Acoustics were to make an 8-inch version of their torrent driver...

jeffhenning's picture

I'm in my home theater right now looking at my LS50's. So this sub has dual drivers that are about 7 inches each?

You can't move enough air to have serious low end response at something close to concert level with drivers that small unless you buy at least 6 of these subs.

I have 4 Rythmik L12 subs in my theater. I started with one, then doubled it and then doubled that. It's rather impressive when turned up. But, it's not about volume... it's about being able to play a low B note and have be exceptionally free of distortion. Yes, I am a bass player.

Hey, I'm not trashing KEF. I have 5 of their speakers in my theater and their LSX's in my bedroom (with cheap non-KEF subs). They make really good products.

I'm not even saying that this is a bad sub. Given how good the LSX's are, hey, I imagine this is one of the most kick-ass mini-subs on the market.

What they do not offer is bang for the buck or the ability to play loud. I know the second assertion just by the size of their drivers. It's simple math and physics.

Reproducing bass is about moving air. As innovative as the drivers and DSP are, they need to offer better ROI.

If they can take this tech and offer it with 12" drivers for about $2K, that would be great.

My 4 Rythmik subs cost me about $2,500 and that includes all the cables I bought with them.

Traveler's picture

I wonder how they work in different sized rooms.