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

Compared with a low-impedance (4/8-ohm) speaker system, a 70-volt constant-voltage system:

Cannot use transformers at the speakers Makes speaker count and tap wattage additive so long runs stay within voltage-drop limits more easily Requires each home-run to be 70 ohms Is limited by NEC to 10 feet

Correct Answer:

Makes speaker count and tap wattage additive so long runs stay within voltage-drop limits more easily

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