This is the alternative we used in the "old country", and i can tell you it works! Buy 8 hardest tennis balls (paint them or whatever) cut them on half, and place them under the speakers. Now, i am not sur of the size of paradigm 100, relatively large probably, and it may be stable enough?
Alternatives to speaker spikes?
I have a pair of Paradigm Reference 100's with spikes at the bottom. I'm moving into a newly built apartment with beautiful hardwood floors. What can I do to prevent ruining the floor?