scarbodave
Inspired
I stand corrected...20 * log (V2/V1) = 6 dB for V2/V1 = 2. Doubling of voltage = quadrupling of power = 6 dB.Google: Voltage can also be expressed in decibels, such as dBV when Vref = 1 V RMS (root-mean-square) or dBu when Vref = 0.775 V RMS. For example, 6 dB represents a doubling of voltage.