"John Atkinson" wrote in message
om...
"Robert Morein" wrote in message
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"John Atkinson" wrote in message
om...
Great article!

Thanks.

As I write this, I'm having a telephone conversation with my friend
Larry Zeitz, who insists there must be an escape clause for downward
pointing, carpet piercing, floor spikes on floor standing speakers, and
the interface between stands and floors.

I have responded that your article offers no implication that spikes are
useful for the floor interface. Would you be so kind as to comment?

There are 2 separate issues involved. The first is the speaker cabinet's
vibrational behavior, which is what I examined in my on-line article.

Having read the online article, it's kind of amazing that you went to Glass
Audio for reference but not the audioXpress article from Feb.2002 by Jim
Moriasu, a protege of Dickason's.

He tested particle board, MDF, double layered MDF, constrained layered
materials, sand filled panels,seven ply plywood, triple layerd MDF, MDF
wioth Black Hole Damping material,Deflex panelsIsodamp, Sorbothane,North
Creek soft glue, and more. The bottom lne is you can't get rid of cabinet
vibrations but you can reduce them with extensional damping.

As far as I know nothing that a stand does, aside from raising the speakers
up to proper listening height, will do anything about vibration.