70V100V
70V100V refers to a common voltage class used in commercial and industrial audio distribution systems. This voltage system, also known as a Constant Voltage or High Impedance system, allows for multiple loudspeakers to be connected in parallel to a single amplifier channel without requiring individual impedance matching for each speaker. The higher voltage reduces current draw, enabling the use of thinner gauge wires over longer distances, which can significantly decrease installation costs.
In a 70V100V system, loudspeakers are equipped with transformers that step down the high voltage to a