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?
You need to be a member of Cigar Box Nation to add comments!
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.
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?
Replies
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.
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?