Re: What to put under the turntable?

Posted by DevillEars (A) on August 3, 2005 at 07:57:15

In Reply to: Re: What to put under the turntable? posted by vanmeterannie on August 3, 2005 at 07:29:33:

I'd work on the basis that the current set of brackets and shelf have to go...

What you need to do is replace the existing brackets with a new set designed to hold a substantial load. The next aspect relates to how you mount the brackets onto the wall - the method, if not a brick wall (as it sounds like a wooden wall), would be to use mounting bolts that go right through and then use large diameter, thick steel washers to spread the load.

Once the brackets are installed, and before mounting the replacement shelf, mount some sorbothane (or equivalent) "bushes" on the top surfaces of the brackets and aligned with the mounting holes (light adhesive to hold them in place).

For a shelf, I'd go with a three-part "laminate" - the lower layer, a 25mm shelf made of MDF/Medite, which is drilled to match the holes in the brackets. Each drilled hole should also have a countersunk cavity bored on the top. Using countersink bolts, bolt the MDF shelf to the brackets, with nuts attached from below.

The upper layer shelf (layer 3) should be the same size as the lower, and should be another 25mm shelf of MDF/Medite.

Take a rubber bath/car mat and cut to the same size as the shelves and place on top of the lower shelf, before loosely placing and aligning the top shelf with the lower - forming layer 2 as the ham in the sandwich.

What you wind up with is a three layer "sandwich" - two layers of 25mm MDF, separated by a 3-4mm layer of rubber - and isolated (by the sorbothane) from the brackets, which are in turn mounted on the wall.

The additional rubber layer does two things:

1. Being rubber, stops the top shelf from sliding around
2. Acts as a second "isolation layer" to back-up the sorbothane

Having no rigid connection between the two MDF layers limits the energy transfer to what can get through the rubber layer.

I don't know what the material costs would be in the USA, but could do that here in South Africa for around the equivalent of $35.00 - including brackets, mounting bolts, MDF, bath mat and sorbothane bushes..

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Follow Ups Full Thread

Topic - What to put under the turntable? - vanmeterannie 06:43:44 08/03/05 (16)

I use a combination of systems with marvelous results... - Antonio Machado 15:28:16 08/03/05 (0)

vibropods are pretty cheap - DAT 10:18:57 08/03/05 (0)

It would help to know what turntable. - HenryH 08:18:55 08/03/05 (2)

Re: It would help to know what turntable. - vanmeterannie 09:45:54 08/03/05 (1)

Re: It would help to know what turntable. - HenryH 10:39:13 08/03/05 (0)

Re: What to put under the turntable? - Ray-o-Stat 06:53:31 08/03/05 (10)

Re: What to put under the turntable? - vanmeterannie 07:06:28 08/03/05 (9)

hang turntable from ceiling... - haugenmarka@hotmail.com 09:02:40 08/03/05 (0)

This may sound totally stoopid - rocky raccoon 08:33:52 08/03/05 (3)

Re: This may sound totally stoopid - vanmeterannie 09:45:24 08/03/05 (1)

you might wnat - msunkenberg@hotmail.com 12:53:30 08/03/05 (0)

or - msunkenberg@hotmail.com 09:33:30 08/03/05 (0)

Re: What to put under the turntable? - Ray-o-Stat 07:12:12 08/03/05 (3)

Re: What to put under the turntable? - vanmeterannie 07:29:33 08/03/05 (2)

Re: What to put under the turntable? - DevillEars 07:57:15 08/03/05 (1)

Re: What to put under the turntable? - vanmeterannie 08:01:23 08/03/05 (0)

Follow Ups

Re: What to put under the turntable? - DevillEars 07:57:15 08/03/05 (1)

Re: What to put under the turntable? - vanmeterannie 08:01:23 08/03/05 (0)

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