I went to a NY Audiophile meeting where the guy poured a cubic meter of concrete on a steel dolly that had threaded cannisters for leveling. Seemed to work with foot falls and high sound pressure levels.
Home made turntable isolation
After researching many different issolation platforms I have decided to make my own to hold my TNT JR, based soly on price. I am going to have two peices of 10ga stainless lazor cut to my spec. (I call on a couple of accounts w/ lazors. The problem is the core, I have researched and found fiberglass suppliers carry many different materials high and low dencity foam. The one I would use is a 1 1/2 inch honeycomb but the honeycomb stands on end and I dont think this would be the best option to dampen vibration. If it ran the other way it would be my choice hands down. Also balsa wood is availible. I will have about $125 into something that would be $900 (I checked)What do you guys think on the core. David