Making my own AES/EBU cable

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What I meant was that a balanced port needs a balanced connection, and an unbalanced port needs an unbalanced connection. Too many people seem to think that twisted pair is 'better' even for unbalanced. Of course if you use a balun then you can swap from one to the other. For really short connections you can get away with almost anything - but don't imagine that using the wrong cable can be in some 'audiophile' way be 'better' than using the right cable.
 
You cannot run coax on a balanced connection, unless you want to radiate and pick up RF interference. In order to operate correctly, coax needs the outer to be grounded. Ground it and it is no longer balanced. Fail to ground it and it is still not balanced, as the two conductors have different impedances to everything else. So if you want to run AES/EBU coax then you need to ground one side of the transformer to convert it to an unbalanced connection; then it should work fine.
 
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