Dctom wrote,
"I have built my own - very high mass plus anti vibration material and springs. I have no feedback issues at all now."
I'm a big fan of high mass/spring systems. One reason is they are rather uncomplicated plus you can obtain very low resonant frequencies. I'm also fond of dual-layer iso systems with two heavy masses, such as bluestone, and two layers of springs.
"I have built my own - very high mass plus anti vibration material and springs. I have no feedback issues at all now."
I'm a big fan of high mass/spring systems. One reason is they are rather uncomplicated plus you can obtain very low resonant frequencies. I'm also fond of dual-layer iso systems with two heavy masses, such as bluestone, and two layers of springs.