Air Bladder Isolation, Cheap

Yo Tom,and anyone with an interest in this discussion: What about the cans of fix a flat from auto parts stores?

I've been using 16" bike innertubes with 1 1/4" marble slab on top. Had this under CD, pre, and amp on hardwood floor. I recently moved to new room with concrete slab under carpet. Now amp sounds better without innertubes, as does preamp. Rack is now spikes through to the slab. CD still likes it, allthough not as much (Rega Planet already has squishy feet, because its a top loader, and has no internal damping) I got the marble from a marble retailer's scrap heap, cut it with a masonry saw (lucky to have access). Some stores sell pre cut "Gardn Path" type stones, typically in maybe about an 18" square, sometimes slate, sometimes granite. Usually pretty inexpensive. IT is definately a good idea to put innertube under your shelf flat, and inflate it minimally, in my experience.

I haven't tried it, but there is a product that is used to prevent flats in bicycle tubes. It's called Slime, and is kind of a thick substance. Try you local bike store or Bike Nashbar.

I have heard some use the inflatable doughnut cushions sold at drug stores for people with hemeriods or other unfortunate problems. Given the anal retentive tendencies of many hobbyists, this may be more appropriate for some. A layer of bubble-rap between shelves can be interesting to experiment with, and if it doesnt help sonics, you can calm yourself popping the bubbles. I doe use a cement stepping stone from Home Depot under my sub and one on top. Seems to tighten things up.

You guys using inner tubes, bladders etc.-- do you set the component directly on the partially inflated tube? Do you take the stock feet off the component? I've got a couple of Townshend Sinks on the way, and looking forward to trying them under transport and DAC. Cheers. Craig.