At CEDIA 2017, KEF took the covers off three new sealed subs: The Kube 8b, Kube 10b, and Kube 12b. All three subwoofers feature a DSP preamp and a 300-watt (RMS) amplifier as well as a front-firing driver. As the product names indicate, there’s an 8-inch, 10-inch, and 12-inch model.
This iteration of the Kube series features DSP controlled “Smart Compression Limiting” that lets the subwoofer analyze the input signal and applying appropriate compression limiting when there’s a risk of amplifier clipping, and also keeps the driver operating in a linear fashion. KEF says the benefit of this approach is that the subwoofer can at once play louder and offer superior dynamics.
Additionally, the DSP allows for three preprogrammed custom EQ settings: freestanding, corner, and wall (or in cabinet installation) that adjusts the subwoofer EQ to offer optimal performance depending on placement.
The subwoofers include speaker-level inputs, for use with 2-channel amps. Plus, there are physical controls for gain, phase, and low-pass filtering. Furthermore, thanks to a feature called KEF Smart Connect, the subwoofers can also detect whether the input is an LFE or stereo signal and adjust the subwoofer volume accordingly.
New KEF subs at CEDIA 2017
I did not have an opportunity to demo the subs at the show, however I expect to receive a 12b to review in the near future.
Here are the details for each of the three subwoofers:
Frequency Range: (+/-3dB) 22Hz – 140Hz
Max SPL: 114
Driver size: 12″
Dimensions: 15.5″ W x 15.5″ D x 16.5″ H
Frequency Range: (+/-3dB) 24 to 140Hz
Max SPL: 111
Driver size: 10″
Dimensions: 14″ W x 14″ D x 15″ H
Frequency Range: (-6dB) 34Hz – 140Hz
Max SPL: 105
Driver size: 8″
Dimensions: 11.6″ W x 11.6″ D x 11.6″ H