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In Reply to: Another wiring question (Rega tonearm) posted by VinylNewbie on October 4, 2006 at 11:15:53:
This is the first Cinemag setup I did well over a year ago.There is only one binding post directly mounted in the wooden box. The SUTs are encased inside potted in beeswax. The black/white SUT case and internal Faraday shield wires are attached to the binding post only.
It is dead silent. The transformers are themselves encased in MuMetal cans and don't really need additional shielding. Several here mount them on top of the box which looks very nice.
In the case of the Rega arm if it has the stock wire the arm ground is attached to the left channel blue cartridge lead which "eventually" finds it's way to ground at the preamp in 99% of cases. The downside is all the grunge gathered by the shield of the cable is fed into the music signal too.
If you added a ground wire to the Rega arm but did not sever the connection inside the arm you haven't changed anything. The added ground wire is redundant and unnecessary. And if you do add the external ground wire you need to connect the ground wire inside the arm to the external ground wire after severing it from the blue wire on the left channel. And don't forget to remove the tab that connects the left channel blue wire to the arm base or it will still be in the ground path or rather the ground is still in the signal path however you want to look at it.
Follow Ups:
I have not done anything with my Rega tonearm wire (yet).I'm just trying to figure this Cinemag thing out before I start. I really have no idea what I'm doing. I've read a bunch of posts here about different ways to ground. From your description, it looks like there is no need for a ground going into, or out from, the SUT.
The idea of an external ground wire for the Rega tonearm was from a completely different subject. Someone was asking if it is possible to run tonearm wire externally (to try out different wires before installing them). It was suggested that an external ground wire would be then be necessary. Thanks for info about how the stock tonearm wire and an added ground wire is redundant and unnecessary.
Where did you get THAT idea? There are wo ground connections and they should be grounded.
When I said "SUT", I meant the wood box that contains the Cinemag transformers.I do understand that the Cinemag transformer ground connections must be grounded.
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