Tekton Double Impacts

I agree corelli, Brotw helped take some of the mystery on how isolation devices work for me also and I'm experimenting with a few different isolation options. 

For my DI's I've tried the Mapleshade Heavyfeet brass carpet spikes and Herbies Giant Threaded gliders before going with the Gaia I's. The first two were much better sounding than the stock spikes but neither come close to the improvements the Gaia's bring to the table IMO. 

For my electronic components I've been using the Mapleshade brass Heavyfeet under the components sitting upon their 4" thick maple platform upon their isoblocks. I just ordered a set of four Isoacoustic Isopucks and Symposium Rollerblock Jr's to try in place of either the brass Heavyfeet or the isoblocks. I'll try replacing the Isoblocks first as the theory is that the brass Heavyfeet transmit vibration from the component into the maple platform for it to disappate and the isoblocks isolate the platforms from vibrations from below. At least that's my understanding. So I'll try replacing the isoblock with the other isolation devices first to see if I hear a difference so as not to disrupt Mapleshades process. Then I'll try replacing the brass Heavyfeet with the new isolators. Might isolators above and below the maple platforms work even better? Time will tell. 

Thanks to aniwolfe for mentioning the Symposium Rollerblock Jr's, they're quite interesting. FWIW I went with the HDSE option. 

Here's what I don't understand.  With a roller block system, I envision that when the woofers are in action, there is an opposite reaction that results in the cabinet moving in the horizontal plane in the opposite direction. And then I ask, wouldn't that decrease bass impact? And what about the shorter wavelengths of the tweeters--wouldn't that smear  detail as the point of wave launch is always moving?

@corelli

I’m using Herbie’s Giant Threaded Stud Gliders. Depending on what thread size your outriggers can take, they may be a relatively inexpensive option. $280 for a set of 8, less if you are using a three point outrigger.

Herbie also has a very generous trial and return policy.

They are listed about 2/3rds of the way down the page in this link:

http://herbiesaudiolab.net/spkrfeet.htm

I’m using an unconventional setup with two sets of Herbie’s Giant Gliders and an isolation shelf in between, with excellent results.

I have the Gaia IIs and they made a slight difference but not enough to justify the spend (vs my Herbie's setup).

They will be going back (for the reasons that Mac mentions: too much weight for the IIs to perform well) and I will have to either go with the Gaia I or take a chance with stability/tip over concerns and go forward with a Star Sound Tech platform (which has been my first choice for a long time now, but I’ve been holding off on account of my son’s safety).

I was using Stillpoints Ultra SS under my Crescendo's with good results but they leaned out the mid-range too much and since then I've found the Audio Points to be "Outstanding" and is what I'm using with very good results...

http://www.starsoundtechnologies.com/

Wig

Very good discussion on this worthwhile topic of vibration/resonance management. There are no shortage of products available that's for sure.  I happen to use the Star Sound Apprentice platforms under all of my components and speakers. They are very effective and unquestionably improve the sound quality.  Most especially with speakers. It's a well thought out and engineered product. 
Charles