The famous rigid, light coffee table?
Not exactly. I built a wall shelf system where I lagged bolted 2x2's into the wall studs, screwed in the mounting brackets into the 2x2's. I used standoffs between the bracket hangers and the bottom wooden shelf to try and decouple any vibrations or ringing from the hangers. I then used 3 wood screws, screwed in through the bottom side of the bottom shelf in a equallateral triangle. I then rest the top wooden shelf on top of these wood screw points. I can thereby level the top wooden shelf by simply adjusting the three wood screws appropriately and by resting solely on these fine tips, I believe it further helps remove any vibrations. The board is definitely light and rigid and to my ears, lets all of the music from the vinyl grooves come thru unmolested.
I will try to attach some photos to give you a little idea of what I did. I mounted it in a fashion so that it looked as though it was a part of the rest of the system.