The vibration that gets into the chassis I was referring to is through the metal feet. These are directly coupled the the pylons, which I’m turn are connected to the chassis through the springs. By placing a Gyrodec on a make shift isolation platform made from marble and sorbothane feet I measure a drop of around 50% vibrations reaching the platter when playing music at 85db. Bear in mind my TT sits on a suspended shelf attached to solid wall already and sit 4 feet behind loudspeakers. After I replaced the feet as in the previous post and removed the temporary isolation platform I measured a +50% reduction vibration. I should add that the accelerometer measured most vibration in the vertical axis (up and down) very little in the x and y axis, side to side and back to front.

There are quite a few TT’s out there with out rigger motors, how good or bad they are on the wow or flutter front I have not looked out. However it is well known that careful design needs to be done to avoid platter wobble and bearing issues when out-rigging a motor.


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