Question would be will the mic smoke from the current draw…. I suppose if the mic can draw enough current, it would resolve the voltage inequality between the supplies. So, it will depend on the phantom amp in the particular mic in question and how it handles that. The current in parallel, however, will be additive. Assuming there are blocking diodes to prevent this, I'm not really sure what would happen. Since there will be some slightly different amount, it would be trying to flow current from the higher supply to the lower supply. If it was, then you would still be simply supplying 48V to the mic. Keep in mind that not all phantom in reality is actually 48V. If you are familiar with Ohm's Law, the voltage in parallel would be the average of the two supplies. Phantom power is DC, and you would be connecting the two DC sources to the mic in parallel. Still haven't got my plan fully sorted.Īny idea what double phantom powering would do to a microphone?Not as bad as you might think depending on the actual gear in question. I guess I'll just make sure to turn off all phantom powers, but, just imagining that two on the same channel do get turned on, what would happen to the microphone?Ī foolproof safety I might use is to lift all grounds on the secondary XLR outputs of the snake, that will cut off phantom power on that end automatically.
Then it won't matter if the mixer on the other end is electronically balanced (most likely scenario) because I've got top quality audio transformers on every input of the recording-end already. I am planning a Y-cable splitter snake because I am going to make sure all my mic pres have input transformers with Faraday shielding, along with inherently providing DC blocking and good CMR at the input, which will kind of serve the same purpose as outboard splitting transformers, I have inferred, from talking to Dave at Cinemag. I'm not exactly competing with anyone in town, either. I guess I'm a cut rate bottom feeder, haha! Really I am just working at high ambition on a low personal budget, which I pass on to the people I work with.
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