Vibration Issues / Turntable Decisions

roxy54
I said decoupling not damping.

I was responding to the poster previous to my comment. I am pro decoupling and pro draining and to a lesser extent pro damping. In combination, not separately.

hifiron,

My crawl space has less than 2'. I ended up using some 4x4s and some 20 ton bottle jacks to support the floor joists.

When I was a postdoc at U. Oregon I was introduced to atomic force microscopy, a technology that uses a stylus in the sub-micron tip size range to physically scan and touch-tap to map and image the topography of biomolecules such as DNA, proteins and other structures on a solid support. The resulting images showed hi rez, three dimensionality of biologically relevant tertiary structures. An example was propogation of RNA polymerase II on a DNA template in solution. As you can imagine, any vibration needed to be removed from the microscope and detection system in order to gain maximum resolution. The solution was to suspend these microscopes not with mass loaded heavy laser tables, but with bungee cords from the ceiling.

I don’t see why the same physical principles couldn’t apply to turntables.

Since I don’t understand one word you just said, I’m afraid to disagree!

I just wonder how you’d describe a listening experience??

Hanging the microscopes from the ceiling with bungee cords, was already mentioned. The problem is asthetics!

The same principles do apply to turntables. The same principles also apply to amplifiers, preamplifiers, CD players and speakers. Bungee cords is an excellent example of mass-on-spring physics, upon which almost all audiophile isolation devices are based. Mass on spring acts as a mechanical low pass filter. Bungee cords operate the same way as steel springs and air springs, air bladders. Many audiophile isolation devices such as Vibraplane and Minus K come to us directly from atomic microscopy and from the mother of all isolation companies, Newport Corporation. Minus K in its first incarnation - or would that be carnation? - was Newport's Sub Hertz Platform.