At least use the junk spikes provided with the speakers. You will be able to get a noticable sonic improvement with "Audio Points" in place of the "stock" spikes. Check the bottom of the K2's, as I am only familiar with the bottom of the ones I have owned (Osprey, Nighthawk, & Blue Heron 2's) which have 5 threaded receptacles for spikes. Use of four is recommended if they can be knocked by children or pets around the speakers. Use of 3 will give a better "bite" into the floor, however not as stable.
The Audio Points were about $20 each new, and they come in varying sizes depending upon your speaker. I am using the 1.5" narrow body for my Blue Heron 2's.
The Audio Points were about $20 each new, and they come in varying sizes depending upon your speaker. I am using the 1.5" narrow body for my Blue Heron 2's.