Arizona Drivers Permit Practice Exam Guide

Why are 70-volt systems preferred over 8-ohm systems for large commercial PA installations?

They provide better high-frequency response They allow many speakers to be daisy-chained over long distances with minimal signal loss They do not require amplifiers They use thicker, more expensive wire

Correct Answer:

They allow many speakers to be daisy-chained over long distances with minimal signal loss

Explanation:

70V systems use higher voltage and lower current, reducing voltage drop over long wire runs and allowing multiple speakers to be wired in parallel simply by tapping their transformers.

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