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In Reply to: RE: Cable for XLR interconnects posted by PAR on June 16, 2016 at 02:32:35
I want to construct a balanced XLR cable. I am not sure if the three wires required must all be shielded and thus my doubt if I can use the cable I have.
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The sort of wire you need would have TWO internal (best of spiral wrapped about each other) wires with an external shield which is used as the ground. The new wire could also have a 'extra' external wrap for protection (as your current wire does.. that stainless steel wrap should never be used for a signal.
Actually you can make a good balanced wire set with three wires. Two fo plus and minus spiral wrapped. Then the last one spiralled around the other two in th opposite spiral direction.. Not the same twist direction as the pair.
Any insulated copper wire will do.
I have a expensive system and use a Kimber braid of four for the plus and minus, and a separate wire spiral wrapped around the Kimber for the ground.
THe wire bulk Kimber cost me about $500 for my 30 ft run. But the next better thing is $3,000. IMO
Anyway, he wire the op has is totally NOT OK to use for a balanced IC.
I have to agree. The cable I have is just for RCA application. Not all bad since I will use if to upgrade the cables on my Luxman PD375.
I hope that this link will help.
The 3 conductor wires do not need to be shielded (only insulated). The cable should have a screen that connects to the connector's case. I have seen cables which use 2 conductors and connect the screen to pin 1 at both ends thus using it for screen and ground. Not recommended.
If you have a cable that has shielded conductors they can be used but then you would need to find a way of connecting the shields to the connector chassis (case) as per the usual screen. Can be done but much more fiddling around.
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