Ball bearings would transmit like a solid metal engine mount on a car, not isolate. Remember back to school Newtons cradle???
https://en.wikipedia.org/wiki/Newton%27s_cradle#/media/File:Newtons_cradle_animation_book_2.gif
Cheers George
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.
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.
Showing 6 responses by georgehifi
I thought Stillpoints do decouple in TAS RH review? Unless there’s a hidden "rubberized isolation" section within the two sections of the Stillpoint. There is something between the two sections, but I was told this is just ball bearings, if so they wouldn’t de-couple from the floor. As to de-couple you need something soft between the two sections that won’t transmit into the floor. http://www.analogueseduction.net/user/ASTILLULTRA5ksjdhfgf.jpg Think of engine mounts on a car, they are nearly all made with rubber de-coupling from the chassis, some esoteric ones are de-coupled using fluid. Any hard mount would make for a very uncomfortable ride. Cheers George |
Yes your experience with the Seismic Pods, de-coupled the speakers from the suspended floor. As does Herbie's Titanium Cone/Spike Decoupling Glider. When I isolate (de-couple) my massive Martin Logan Monoliths from my suspended floor, the bass becomes far tighter faster and deeper and without overhang, and the image is improved. If I couple them into the floor with spikes, then the bass becomes one note'ish the floor vibrates through your feet, and the image is also shot to hell. Cheers George |
jazzonthehudson These could be good to de-couple your beasts from that wooden sound board of a floor. "Giant Fat Glider" or if you wish to still use your spikes. "Giant Cone/Spike Decoupling Glider" There are many to look at. http://herbiesaudiolab.net/spkrfeet.htm#mobile Cheers George |
Good work knghifi, these Titanium Cone/Spike Decoupling Glider will be the way to go if you have a suspended floor and you still want to use your speaker spikes. Some very good feedback from purchasers with suspended floors. http://herbiesaudiolab.net/csglider.htm
As from what I can see the Stillpoints wouldn’t be right for a suspended floor as they don’t decouple from it at all, they actually couple, and nowhere on their site do they even get into decoupling for suspended floors. Cheers George |
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
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