When I unpacked these speakers this summer, the mounting hardware include both silver dollar feet and spikes (which manufacturer called carpet spikes. Since they were going on hardwood floor, I went with the round feet.
I'm now curious if installing spikes instead would alter the sound, Room is uncorrected, roughly 11 x 26", mix of hardwood floor, couple of area rugs, two big leather chairs w/ottomans, and stone coffee table.