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  3. 131641-2199

Support table or shelf for turntable

I was hoping to replace my oak table with either a wall mounted shelf of a heavy steel table.
The reason is that I am finding that the oak is picking up and transmitting vibrations to the turntable, a Garrard 401 in a birch ply plinth. I am hoping to move to a slate plinth and wanted to maximize the support strength and reduce feedback.
Here is a link to the shelf and here is a link to the table. Both examples of what I'm looking at.
Shelf would be mounted to concrete wall. Table would stand on concrete floor.
Thanks.
128x128noromance
noromance's avatar
noromance OP
9,848 posts
 
@islandmandan Yes, I know that the slate will not isolate the table. I want to try the slate plinth as I believe that the birch-ply, while excellent at damping TT generated noise, is also responsible for a little smearing and subsequent loss of some detail. The relatively difficult, and frankly, cumbersome efforts to isolate the table can be ameliorated by wall mounting to concrete and keeping the structural hardware to a minimum.
geoffkait's avatar
geoffkait
23,365 posts
 
Actually, slate or marble or granite, assuming it’s not too thin, provides significant isolation against rotational forces attempting to bend the plate or slab, by virtue of its mass and stiffness. I am a big fan of bluestone, the gray blue stone usually used for paving, for its low cost and high mass and stiffness. Thus, the effectiveness of these heavy thick stone slabs with springs.
bdp24's avatar
bdp24
9,845 posts
 
I'm just happy to see Michael Green's (Room Tune "guru") proposal of component "tuning" by constraining outer structures with spikes falling out of fashion. Wrongheaded then, wrongheaded now, wrongheaded forever! We want decoupling (isolation), not coupling, right?
noromance's avatar
noromance OP
9,848 posts
 
I have to admit all this springs stuff has come as a bit of a surprise. Mr. Kait and Mr. Green appear to have some interesting online correspondence. And more interestingly, an interest in Peter Belt who I remember from the 80s. Indeed, I sat in on a few black foil triangle demos. 
toddverrone's avatar
toddverrone
840 posts
 
A spring suspended platform isn't cumbersome at all if made well. Check out my system page. I think my platform looks rather nice. Even on a shelf on a concrete wall, there are seismic and airborne vibrations.
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