AUDIO’S THREE PARTSELECTRONICS AND ELECTRICITYAN ELECTRICAL CIRCUITELECTRICAL PRINCIPLESOHM’S LAWUSING OHM’S LAWVOLTAGE DROPPOWERINTRODUCTION TO MEASUREMENTSINDUCTANCE, CAPACITANCE, AND IMPEDANCERESONANCELINE IMPEDANCEMAGNETISM AND SPEAKER DRIVERSSPEAKERS AND ELECTRIC MOTORSTHE INVERSE SQUARE LAW AND SPEAKER DESIGNBI-POLARITYDIRECT AND ALTERNATING CURRENTGRAPHICAL REPRESENTATION OF WAVEFORMS