Explain the flooring under the speakers; suspending hardwood, carpet over wood, carpet over concrete, etc., etc. Without these details the discussion is pointless.
Gaia do magic to my speaker
http://http//www.isoacoustics.com/products/gaia-series/
After reading many favorable reviews, I placed an order for Gaia II for my Lansche Audio 4.1.
Actually my speaker weighs slightly over the limit of Gaia II (60kg vs 54kg).
I got the product today and could place upon the bottom of speakers without much difficulty.
After warming up my tube amplifies, I got shocked to find out that Gaia changed the sound of speaker drastically.
The soundstage got more transparent with better focus and details.
The bass got tighter.
600$ for Gaia had made more than 3,000$ improvement over my system.
The only catch is that it may do some harm if your sound is already on the bright side.
I will keep listening to music for a while before forming long term impression.