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 …