60 Durometer

Decoupling  Foot

 

 

 

These feet will support 80 LB each. A layer of soft durometer material is laminated on the support side to decouple energy transmission.

This will also help damp vibrations within the component. They may be placed under the component or attached via the mounting hole. The laminate is easy to penetrate with a mounting screw. A bushing is supplied for reduction to accommodate a # 8 screw size.

Diameter 2 ½ inches 1.094 inches tall

3/8 inch bore.  Reduced to # 8 with bushing

$9.90 each BUY ME

$29.70 3 PackClick to Buy

$39.60 4 PackClick to Buy


The master record cutting lathe moves in a stright line. Obviously the best method of recovering the groove information is to memic the lathe. A tangent tracking tonearm is expensive and extreamely fussy.

The reason older turntables (also todays less expensive) use 9 inch arms is: the overall size grows thus the cost and the turntable may not fit the average component rack.

The 12 inch radial arm is 3 inches longer than the 9 inch. This difference as shown in the diagram above (it may look like a small amount but when dealing in microns it is huge) relates to about 25% less tracking distortion. The longer the arm the shallower the arc.

One difference is the 12 inch arm's moment of inertia is slightly higher due to the extra length of the arm tube. But the arm tube is extremely light. The effective mass of the 12 inch is very close to the 9, the reason is effective mass is derived by a complicated equation that uses mass and inertia. If your turntable will accept a 12 inch arm the proformance difference will be very apparent. When you are ready to move to a 12 inch arm look at the PolyTable SUPER12 or the Merrill-Williams 101.3