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Dannii · 03-31-2017, 09:13 PM

Those mics typically require a small DC supply of something around 1.5 volts to work. It's known as plug-in power (as opposed to phantom power).
Phantom power will damage them but you could run them from it by using a resistive divider with a couple of series diodes across the output of the divider to regulate the DC supply.
You'd probably need to add a low pass filter to such a supply though (another resistor and capacitor across the supply to the mic) because such a diode arrangement can be quite noisy.

The easiest way would be to use a 1.5 volt battery for the mic power with a DC blocking capacitor in series with the input to the mic preamp.

03-31-2017, 09:13 PM	#2
Dannii Human being with feelings Join Date: Mar 2010 Location: Adelaide, South Australia (originally from Geelong) Posts: 5,598	Those mics typically require a small DC supply of something around 1.5 volts to work. It's known as plug-in power (as opposed to phantom power). Phantom power will damage them but you could run them from it by using a resistive divider with a couple of series diodes across the output of the divider to regulate the DC supply. You'd probably need to add a low pass filter to such a supply though (another resistor and capacitor across the supply to the mic) because such a diode arrangement can be quite noisy. The easiest way would be to use a 1.5 volt battery for the mic power with a DC blocking capacitor in series with the input to the mic preamp. __________________ - My Music - Last edited by Dannii; 03-31-2017 at 10:20 PM.