Tonearm ground wire - How to properly connect? - Page 2 - diyAudio
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Old 13th March 2011, 06:38 PM   #11
DF96 is offline DF96  England
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If there is no metal, there is nothing to ground. If there is metal, ground it.
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Old 13th March 2011, 08:03 PM   #12
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Quote:
Originally Posted by Panicos K View Post
Check for continuity from headshell and arm base.If it is ok,attach the ground wire on the arm base,so that the arm will be grounded.Shielding of the cable itself can be either soldered in the RCA --- terminal,or attached on the amplifier ground terminal.You can use a small length of wire (to connect shield to amp) with a spade lug for this.The shield will remain unterminated at the arm end.
I would recommend using the wire with spade versus connecting directly (soldered) to the RCA. Just my experience with a multitude of commercial tables; sometimes leaving the ground floating is the lower hum configuration, sometimes not. But that way, you have the option. What works best can differ from one cartridge to the next with the same TT.

If you don't have a suitable ground lug on the preamp/integrated amp, you can usually make a connection of the ground to one of the RCA at the plug/jack if your spade lug isn't too substantial by kind of jamming it between the plug and jack (outer, not the pin). So, use a thin, smaller spade.

Similarly, if the table itself has RCA jacks you could alternately connect it at that point, which will ground any shield on your RCA connecting cable.

If you really want maximum versatility, two ground lugs at the TT might help. One connected to the chassis gnd and one connected to the RCA shield.

You would then have the option of running a jumper from the actual ground to the RCA shield at the TT end, or running it to the lug on the preamp/integrated amp, or leaving it floating (unconnected).
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Last edited by Johnny2Bad; 13th March 2011 at 08:06 PM.
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Old 14th March 2011, 09:36 PM   #13
batty is offline batty  Australia
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The Rega RB250 uses the shielding of the cable as a ground. When i had my arm rewired by Audio Origami they added a complete run with a spade connector on each end. This is very handy for me as I use a Townshend Rock and the chassis is metal so can ground using just about any screw on the TT.
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