Do Isolation Tweaks really work?

[prerich]

Well, I'm now a fan of speaker isolation tweeks. I've looked at granite Plinths and such but the cost was tremendous. I went to a local stone store and saw some very solid and heavy limestone. I checked it out and said "Yes, these will do the trick!" I bought three for $27.00 each and had them cut to size for an additional $25.00. I placed my Snells on them and boy did the bass tighten up! I wanted to add cones to the limestone but I had a thought - further isolation - I added the cones to the Snells instead and last night I was treated to some of the tightest bass and one of the widest soundstages that I have ever heard anywhere from any speaker.

What are some of your experiences with speaker isolation - good or bad, Chime in folks !!!!