NM CID ES-3 Practice Questions - New Mexico CID ES-3 Low Voltage Special Systems (Under 50 Volts) Examination Exam

A 70-volt distributed loudspeaker system is used primarily because it:

Eliminates the need for an amplifier Lets many speakers be placed on a long run of relatively small cable by using matching transformers and wattage taps Requires each speaker to be 70 ohms Is the only wiring method permitted by NEC Article 640

Correct Answer:

Lets many speakers be placed on a long run of relatively small cable by using matching transformers and wattage taps

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