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Re: vinyl needs support... better late than never

199.107.130.15

Posted by Vinyl Junkie on April 2, 1999 at 14:14:21

In Reply to: vinyl needs support... posted by gnat on March 31, 1999 at 21:47:00:

The ideal turntable stand should provide isolation against vibration and
resonance. How about a two inch or thicker slab of granite? That should
be very resistant to vibration and resonance. I was told that marble has
similar properties as granite. I'm not a expert, but I think concrete
resonates even though it is heavy. The problem is it is not as dense as
granite or marble.

The turntable would be on top of the slab. To dampen any vibration that
might be transmitted through the slab, you could use Sorbothane in between
the slab and a plate of MDF. Some how mount the MDF on a stand. This makes
the set up top heavy, so those of us that live where the ground sometimes
shakes pretty hard, we have to build the stand so it does not tip over.

I have spoken to some people that have used a granite slab and they all
say it makes a difference. Less rumble and quieter. I guess it also depends
on the turntable. You can't improve on something that is inherent to that
turntable. I'm just repeating what I've heard for the most part. I added a
change of my own. One of them mounted his to an aluminum plate which had
spiked feet on the bottom. Then he put it on top of the furniture. Ouch.

One of these guys told me he measured the difference in rumble, etc with
test equipment. He said it was less, but I forgot by how much. I believe
he was just used a slab sitting on top of the table. He told me that in
theory, the slab is suppose to add mass to the platter.

Another guy I know bought a broken tombstone, counter sunk some holes in
it and filled them with lead. The turntable was mounted so its spiked feet
was held in place by the lead, otherwise the turntable would slide. He had
the slab on top of the furniture. It was pretty quiet when he played it.
It sold me on the slab idea. That was about 9 years ago. I still don't have
a slab. Granite or marble that thick isn't sold at mom at pop places. I
think he had a good way of how to get one at a reasonable price. A 2X8X12
inch piece of granite weighs about 100 pounds. Your friends will love you
when you ask them to help you move.

My friends think I'm a nut case because I still listen to vinyl. Even more
so now that I'm trying to find a granite slab for my turntable. Don't nut
cases be long in the Asylum?

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