No idea what your current table looks like, but just remember everything can pick up vibration, though the table and shelf you posted (particularly the table) don't seem to have many large surfaces to pick vibrations up, other than their 'work' surface. So they're probably better than what you've now, but no garauntee they'll not have any other issues
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.
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.
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- 83 posts total
@slaw , @toddverrone, you can see my table in systems. ( no one seems to loom there) https://systems.audiogon.com/systems/1593 |
@islandmandan Thanks Dan. I’ll look into your suggestion. Although, with the new slate, when it arrives in a few weeks, I was hoping for something less massive and "constructed"... trying to keep it simple. Taut and rigid. The good news is that I have procured an Audio Grail 401 for the slate plinth. |
Took a quick look, I find it fascinating that since you feel the oak is causing the "pick up" of vibrations that you use marble slabs under your TT footers? In my experience this is a double negative. Marble adds mass but acts as a microphone. What material isolates the oak shelf from the rack? What are you using as the rack legs interface to floor? |
"Taut and rigid" seems like a good approach but actually this approach allows structural vibration to be transmitted *more easily* than "flexible and wobbly." This was the idea behind the Flexy Rack of yore. It’s also the idea behind isolation (decoupling) per se since the best isolation is obtained when the object being isolated is *free to move* in the directions of interest. I would like to see the object be able to undulate and wobbly slowly up and down and back and forth when manually pushed a little bit. Thus, roller bearings and springs ALLOW motion rather than CONSTRAIN it. Marble and granite are good materials as top plates for isolation stands due to their stiffness and mass. The quick fix the set up at hand would be to place low profile compression springs under the components on the table. The required spring rate of the springs and number of springs are not difficult to calculate. Problem solved! |
- 83 posts total