Alex - wow! Great to hear that that simple little tweak made so much difference. Makes me want to hurry up and sort that out on my Heybrook now.
Geoff, would removing the base plate be preferable to just damping it with bitumen or sorbothane? I think that in the Heybrook the plinth is sufficiently braced that the flimsy base plate really doesn't add anything to the rigidity of the whole affair. But I wonder if the bitumen would stop the resonating sufficiently that I could just leave it on. Presently it's supporting the rather wide cones that the deck is sitting on, so if I took it off I'd have to use other feet or add blocks to the plinth. The other option, I suppose, is to cut a large hole in the base plate to open up the air space, and then dampen the remainder with bitumen.
Alex, as for spikes, I think the impact of placing the deck on spikes depends in part on what component rack it's presently sitting on. In my case, the Heybrook is in a large armoire with particleboard shelving (not ideal, I know, but for now it's all we've got), and placing it on three small size Michell Tenderfeet cones made a very significant difference. If your rack has excellent isolation then you may notice a more subtle difference. You just have to try it. But it's a cheap experiment and is instantly reversible - just slip the cones under (hold 'em with double-sided tape if need be) and have a listen. If no change, then use them under your CD player or something else. For what you get, the Michell feet are a little pricey here in Canada -- Parts Connexion in Burlington has lots of other options for less money.
http://www.partsconnexion.com/isolation_connex.html
http://www.artech-electronics.com/canada/index.html
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Originally Posted by Svend N
