Filtering Posts By: "bias voltage"
02.05.2007| By Shure Notes|
Many users of professional audio equipment believe there is no difference between phantom power and bias voltage. Not true! Phantom and bias are not interchangeable. This bulletin explains the differences between phantom and bias, and addresses common misconceptions. Phantom power is a dc voltage (11 – 48 volts) which powers the preamplifier of a condenser microphone. Phantom power is normally supplied by the microphone mixer, but may also be supplied by a separate phantom power supply. Phantom requires a balanced circuit in which XLR pins 2 and 3 carry the same dc voltage relative to …