Vibration control question....

If you move your hands around in concentric circles at 60rpm while you apply the polish to the linoleoum you will reduce the occurence of Coloumb friction at the intersection.Tom

I take my cat box fill it, with what else.. cat litter, mix in some sand and stir in some lead shot and some brazen ball bearings. I then place this upon a lead sheet under which are 3 gigantic coil springs one tuned to 3hz the next to 6hz and the final one tuned at 12 hz.As punishment for breaking her curfew when my daughter comes home late from a date, I make her place her practice cello {I wouldn't want her to damage the integrity of her concert instrument} within this cat box contraption and tell her to play the night away..Of course she hates the sound because I killed it with all this crap.Well not crap the real thing, just all the crap that takes the life out of the music. Oh when I really want to punish her I add some sorbethane to the mix.Where goes the vibration there goes the music. She has as a retort.. said she would place similar non musical materials under my hi-fi. How dare her try to undermine my music. Tom

Multiple examples of multiple dissimilar materials used in Waco ways not dissimilar to multiple home grown methods of Granny Clampetts conjured up backyard brews. All of which decouple the listener from the reality of the music. Direct coupling happens at the event so bring it home.Leave the sand bags at the levee and hope they work there.Tom

Tom Lyons and Warren, we could make this a serious thread again with much information to give and much practical experience as well. However it may become a roosting place for those who think we are sharks or other critters sometimes called salesmen. Thats why I am so reluctant to respond on these pages anymore..The other Tom

Hey Stan its Tom. You are the finest example of a say nothing do nothing member of Audiogon. Your one liners are useless as well. I have noticed recently that other members have asked you or told you to BUTT out. You have been discussed in e-mails as well..You may consider your negative comments and total lack of manners to be some kind of asset, you are really only the first three letters of the last word..Tom

Only if that linguini is made of 100% sorbethane and not whole wheat. ... Darn that makes three one liners in a row. Anyone want to discuss direct coupling as it relates to vibration control? the other Tom

forget it

Ya know if ya move that sensitive piece of equipement to the center of the rack [preamp, cd, dac, or even turntable] you will hear a lower noise floor, more pinpoint focus and stage, deeper bass and more lucid highs.Vibration and coupling as it relates to inertia.Tom

Years ago a member here and now a manufacturer of electronics and speakers use to have built and sold thru his retail store a platform made of laminated wood filled with a hot molten brew of lead shot and a plastic substance sitting upon feet of metal with delrin inserts .Or so I remember. Two versions, one weighing in at about 20lbs the other at about 80lbs..Had one of each for almost 20 years or so wound up in my closet about 10 yrs ago until I gave them away in the recent past.They did increase focus at the expense of stage size,tended to make things to dark the way high mass low reactive materials do. These platforms were of the high mass, sink school of design. These never really gave the equipment a way of dissapating their own internal self generated resonaces or for that matter airborne vibrations which would be picked upped by the chassis only to be slowed at exit by the mass and transfer rate of the materials of the platform.A storage device, with no exit strategy.Tom

So Barry have you actually recorded and played back live musical instruments in the confines of your own studio so as to compare the tonal and dynamic influence your designs impart on the reproduction of the original? Tom

This is a e-mail I received in response to questions I had after much heated discussion to the benefits and effects of cryogenic treatment here on Audiogon, this was in 2002.My inquiry was originally to a Dr. Louis Salerno at NASA. As I found out later Dr.Barron who most graciously sent this reply is considered the leading authority on cryogenics in the United States..Tom

Dear Mr. Devuono:
November 23,2002
In your e-mail to Dr. Salerno (which was forwarded to the Cryogenic
Society of America office), you had asked about the effect of cryogenic
treatment on electrical conductors, such as copper, silver, and gold.

In general, the cryogenic treatment has a permanent effect (there is
no change in the wear properties with time), unless the part is heated up
into the annealing temperature range for the material. Properly heat
treated materials will maintain the effect of cryogenic treatment until the
material is heated into the annealing temperature range. The cryogenic
treatment produces a change throughout the bulk of the material, and not
just at the surface, also.

We have conducted experimental tests on lathe tool materials
(generally, high-alloy steels), in which we conducted wear tests for
samples subjected to various "on-the-shelf times" ranging from one day to
60 days, and we found no statistically significant change in the material
wear properties.

I trust this information will be of help.

Sincerely yours,

Randall F. Barron,PH.D
Professor Emeritus
Mechanical Engineering
Louisiana Tech University
Ruston, Louisiana U.S.A.

Randall F. Barron