Home grown turntable platform/base?

Buy a sheet of 3/4" Baltic Birch plywood (about fifty bucks), and cut (or have cut at a cabinet building shop) two pieces to size. Put Green Glue, EAR Isodamp, ASC Wall Damp, or other constrained layer damping between the two pieces, and screw the pieces together. Put a set of springs, roller bearings, or other effective form of isolation under the platform (Townshend Seismic Pods are great, but not cheap). Enjoy.

@bdp24    +1  

I might also suggest substituting THICK maple butcher block, 2 1/2" or greater, for the baltic birch.  It would require two of the butcher blocks to accomplish your goal, but it would work.  

Thin sorbothane sheets between the layers might also be effective, but with the weights involved, 30 Duro will probably not work as well as 40D or 50D.  More than 50D would probably not accomplish your goals as effectively.  

Good advice so far. If money's tight, Herbie's Audio Labs offer some good footer options that go with the other suggestion. Cheers,
Spencer

If your making a platform with layers, use a proper glue for the specific materials. Don't use screws, they defeat the purpose and allow the vibrations to freely travel through the platform circumventing the layer effect to reduce transmission of vibrations . The Herbies materials are better than sorbathane which around turntables will muddy the bass lines and mess with the treble frequencies where as the herbies materials are designed to avoid that specific issue. If foot falls are not a problem , a simple gluing of a couple pieces of 16 X 18 approx. void free ply with 4 herbies tall tenderfeet will do as well as what you would realistically need/want with the project table. The plywood is just an economical choice that works quite well,  other materials may be substituted that cost more, but don't always deliver the results wanted by adding vibration tone of their own. I made one like this for my daughters Rega RP6 and bought a cheap piece of leather from a fabric store and glued it to the top to dress it up and very fine sanded the sides smooth and sealed them and put 4 Herbies Tenderfoots on and done. Works great and looks quite sharp actually.

 A sand box is a cheap easy build as well if more extreme measures are wanted/needed. 

If foot falls are a problem, then isolating the table from the floor with a wall mount is the best and final method for that issue over suspended floor deflections. 


Good luck, nice to see the gift of music appreciation being joined together...……...

Thanks for the excellent replies everyone,

First of all, sorry but what are foot falls? I like the idea of the Herbie’s Tenderfoots. Is there any way I can do this a little more low profile such as just using one piece of birch? I like that idea with the leather covering. I’m trying to keep the wife acceptance factor here. Is a piece of granite or marble a bad choice with the Tenderfoots?

Thanks again.