Is Spiking Necesarry?

Kalai--helped a friend use those footers SVS makes for its subs on a set of DefTech towers (can't remember which model, but with a built-in sub) on wood floors over a basement.  seemed to do better than some homemade platform/plinth thing he had.  for pretty cheap and a little elbow grease.  noticeably, but not drastically, reduced some vibration.  he thought it actually helped the bass.  I couldn't really tell.

Kalai, If your basement ceiling is not finished, you could also reinforce it under your system to make the floor more robust in that area. Just a thought. 

Moving my speakers (Vandersteen Treo CTs) on their built-in spikes is difficult-to-dangerous by myself. I cut four pieces of 2 x 2 a bit longer than the speakers are wide , then slipped one under the front and one under the back of each speaker, as "skids." This lifts the spikes just clear of the floor and makes moving them quite a bit easier.

@john_g   What type of floor do you have your Treo CTs on?

Kalali, put a 2x2foot concrete paving slab from Home Depot under speakers.