One thing hardly mentioned here is the construction of the dwelling where your system exists. My system is located on the second floor of a 120 year old house in upstate NY with mostly a sandy terrain. Hardly on a bedrock foundation.
Every situation is different due to many factors. My TT is very old with almost no sound dampening in the feet. Is roughly 25 pounds. Millercarbon responded to my previous post and had a very good suggestion.....springs. For my situation, I decided to try them. Certainly Townshend would be the best option but I went with Nobsound springs since they are much cheaper in price than Townshend just to see if the springs added any benefit. They did. The Nobsound seem a bit crude since they house a number of springs but possible to remove springs to accommodate the weight of the table.
Other recommendations mentioned here are certainly worth checking out. Just wanted to offer my experience.
