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Re: Re-phrasing it, then ----

Posted by 4yanx (A) on June 15, 2005 at 13:59:10

In Reply to: Re-phrasing it, then ---- posted by J.D. on June 15, 2005 at 13:16:20:

Well, with respect to the second question, I don¡¦t know of anyone who has done one ¡§vertically¡¨. If they have, they have not reported it to my knowledge and I¡¦ve looked in many places. Perhaps folks at Shindo and others who have done much of the early Garrard work and who use the ¡§world-wide accepted methods¡¨ have already done all the ¡§try and test¡¨ efforts that you don¡¦t want to hear about, including the ¡§vertical¡¨ approach. If someone has, I agree, it would be nice to see a write up of what ¡§doesn¡¦t work¡¨ in that regard and how ¡§horizontal¡¨ vs. ¡§vertical¡¨ efforts ¡§stack up¡¨. ƒº. At the risk of suggested you do something more than you¡¦ve already done, maybe try one vertically and see how it performs. Probably plenty of folks that would like to hear of your experience.

Perhaps saying something that you already know, I was always under the impression that the dispersion of resonances caused by the high rotational speed and heavy torque in the motors of these tables was the primary reason for high-mass. The reason for plywood, in my mind, is that the structure of the wood fibers themselves and the directional diffusion afforded by the ¡¥cross-banded¡¨ ply layers absorbs resonant vibration. It addition, and with proper ¡§feet¡¨, the plinth should drain energies out and away from the table. So, I¡¦d say the answer is both of the things for which you inquire ¡V but I am no acoustical expert. The idea of constrained layer damping was offered as an extended possibility such that any one material might not result in a single resonant point being a problem ¡V recognizing that an improper mix could well do as much harm as good in that regard.

I think that Jean Nantais has addressed this issue a few times in the Audiogon thread but I haven¡¦t the energy to sift through 2000+ posts to find the reference. Perhaps post there with your Q¡¦s. Jean is very gracious to respond. Melomane may chime in on this thread, too.

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