I picked up a local kc62 last week off marketplace. I have it set at 65-70hz sitting in the corner with the corner setting turned on in the dsp. Running CSS 2TDX and a Simaudio I-5. So the speakers are running full range. Tight punchy bass that actually sounds like it’s an extension of the mains. Very impressed with this little guy. Room is around 15ft x 11ft and it’s plenty. It’s better than the Velodyne Optimum 10 that just developed a static issue recently.
I have a JL Fathom F113 in another system in a bigger room. While the KEF has no where near the output of the Fathom it’s tighter on the upper bass.

