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48 V preamp plans?
I want to build a preamp to run off the 48V phantom power from the mixing board on an XLR (microphone) connection. Does anyone know of a good circuit that will work with a piezo at this voltage? I'm looking for clean impedance matching not overdriven fuzz.
Also, I want to run lights (probably LEDs) on the same power. If I just wire the LEDs in parallel with the preamp, will it work or will it short something out?
Also, I want to run lights (probably LEDs) on the same power. If I just wire the LEDs in parallel with the preamp, will it work or will it short something out?
Replies to This Discussion
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Permalink Reply by Doc Oakroot on
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Oh, yeah, I forgot...
I also want to wire a normally open 1/4" jack across the input, to be used only when power is not available. Will that cause any problems in either the powered or unpowered scenario? -
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Barry Savage answered this over at the yahoo group.
What I hadn't thought about is that the phantom power on a mixing board is very low current, so this idea probably won't work. Guess it's back to the battery. -
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