Have to disagree here. On the advice of my dealer and a couple of Hikers I just replaced a pair of 5K2s with a pair of 6Ks in my office which is 12' x 12' with a 9 1/2 foot ceiling. The bass is well and truly there but controlled. Beyond that the sound is just great. Not that the 5Ks were anything but good but the 6Ks are better by a bunch.

Ken

Main: G68J, 5K2s, 5Ks, HSU subs, Pio 151FD, Dish VP722, Roku, Wadia I70, Anti Mode Dual Core, Oppo 103D Vanity Lite
Office: SBT, Berkeley Alpha DAC 2/MQA, Magico S3 Mk II, Boulder 2060, Lumin U1 Mini streamer, Roon.