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Just for the sake of argument and continued edumucation, these are stolen from the Oade forum:#71, "RE: DIY aes/ebu > spdif cable?"In response to In response to 1 Hi! It is more a matter of voltage levels than impedance. I would use a transformer, it is a good solution and allows your connection to meet spec, not a bad idea when daisy chains are involved. I have not tried it, but tapers tell me they use a standard XLR to RCA cable (wired for audio) without a transformer and it works. peace...Doug================== #118, "RE: DIY aes/ebu > spdif cable?"In response to In response to 7 Mike, another thing to think about is long term reliability of the chips. The S/PDIF voltage standard is 0.5 volts. Many use 1.0 volts, but the AES/EBU standard uses 9 volts. This might result in failure on some S/PDIF inputs as they only expect 0.5 to 1.0 volts. An output stage designed to drive a 110 ohm load will not be properly terminated into 75 ohms. The long term current sinking capacity of the output stage is another issue. I would not worry about it if I had to do it, but if I had a choice, I would use the transformer. Those pulse transformers are small and can be placed into an XLRM connector. I would use 75 ohm wire as that would allow me to add the transformer later. Probably worth the trouble...Doug
That's the real reason to do it right! Apparently, per Mr. Skalinder, the non-conconvential methods works too (nice and simple)...YMMV but I wouldn't want to stress the components. It is not that hard to make or buy the appropriate conversion cable.