Footers under big heavy speakers (Stillpoints Ultra 5, Sistrum rack, Finite Elements,..?)


Revisiting isolation and coupling for my main system, I wonder if I would try better coupling devices than the large Symposium Svelte shelves (19"x24") I currently have under my Duntech Sovereign 2001s with 21" w x 35" d wooden base, weighing 360lbs each, which in turn rests directly onto wooden floor. My room was pretty lively before the isolation/coupling and I need better coupling/draining of energy for the speakers. 

What would you suggest?

I could try four Stillpoints Ultra 5 with base under each speaker or what I hope to be at least equally good and more economically is a pair of Sistrum rack platform (using AudioPoints 1.5) that measures 22.75"x 26.75" (I don't think their standard speaker stands can provide enough balance). I could buy a Sistrum SP-4 rack and use two platforms for my speakers. This would be budget wise the same if I would buy two Apprentice SP-SA-XL-4-1.5 (18"x24") as I am looking for a new rack for my second system (Home Theater). 

Star Sound seems to be a very reputable company but earns less coverage than, e.g. Stillpoints. 

The third and probably least talked about solution would be Finite Elements Cerabase but I find less buzz here on the Gon.


128x128jazzonthehudson
Thanks for all your input!

Adding a wooden platform may not be a good solution on my suspended floor so I am still debating between converting the vibration into energy a la Stillpoints or Finite Elements or conducting them away fast a la Star Sound.

There may be a point to isolate the speakers as Tim and Geoff suggested. But I wonder what happens to the remaining kinetic energy stored if you isolate such a big mass like the Sovereigns?

In the meanwhile, I have bought a pair of Sistrum SP004 for my monoblocks (see my other thread about decoupling my mono blocks) that I can carefully try under the Sovereigns first to get a sample how it affects the sound.
I have Stillpoint Ultra SS under my DAC and could buy another set to try them for a couple days under the Sovereigns. If that works better than Sistrum’s approach, I will probably be heading towards Ultra 5 with base, hoping someone with deeper pockets is upgrading to the newer Ultra 6, putting the U5s for sale (wink here).
Has anyone compared the Finite Elements Cerabase with Stillpoints Ultra SS or Ultra 5? It may constitute a viable and less costly alternative. Ditto goes for the Black Diamond Racing Super Jumbo Pucks;  I like BDR for the excellent value/money.

Luckily I have less of a problem in my home theater where the lighter but not-so-featherweight like Duntech Black Knights (only 154lbs each) sit on Symposium Svelte shelves on the wooden floor which is directly on concrete (tight bass).
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Last thing I would do is to couple the speakers to a wooden floor, as it will act as a sound board and muddy the bass. Cement floor, yes, couple them to.

For a wooden floor you need to de-couple, with some sort of heavy duty (for these speakers) Sorbothane/rubber type pads. If you do a search you will find many types around, but it will be hard for this weight speakers.


Cheers George


 

Cement floor couple may be good for rock but energy that goes down in cement also comes back , a disaster for symphonic strings .
Herbies composite  threaded footers solved all my problems on a 3 foot deep cement floor .
How about a Townshend Audio Seismic Podium?  You might be able to have custom built from the UK.  Not cheap, but may be the best solution.