Understood. However, looking at the arm base right now I see the 4 wires exiting the tonearm base and into the arm tube but I can't see where the ground wire is connected to...??
The tonearm cable itself is constructed with the ground wire inside the teflon tubing (along with the 4 signal wires) which is then covered with copper shielding and outer jacket mesh.
The shield does not go through the gimbled bearings. Inside the arm tube, the tube itself is the shield. So the arm ground is usually picked up somewhere near the base, probably very near where the wires transverse the gimbles.
There is a small screw on the base of the arm that goes through a small flat washer which acts to ground the arm and wire shield and also as astrain relief andsecuring screw for the cables leading to the preamp.
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