Turntable ground


Kinda strange, I have the technics slq3 table when I connect the ground I have slight hum, not bad enough to interfere with music. However when ground was left floating, dead quiet. 

pureclarity

@motown-l  I also replaced my hardwired rca cables and put in rca jacks on the table and upgraded rca cables. At the same time updated the ground wire, but as mentioned above there is no hum when ground is disconnected.

@pureclarity 

That is a bit of a mystery, to me. I'm no electronic engineer or tech so I have no theoretical understanding. My experience, with magnetic cartidges is no ground connection, guaranteed 60hz. hum. 

Could it be that what you're using as a preamp is contributing to this phenonium?  I'm using an external preamp which is my ground source for the TT. I also have ancient two wire circuitry so I am always shocked that I don't have grounding issues.

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If your table is quiet with no ground wire why bother with it?

Direct drive turntables: Some models require grounding, while others (especially newer ones) may not