Exam CTS Topic 2 Question 13 Discussion

Actual exam question for AVIXA's CTS exam
Question #: 13
Topic #: 2
When choosing an amplifier for a 70 V system, what amplifier output would be the BEST option for a space with 12 speakers, each tapped to 30 W?

Suggested Answer: A Vote an answer

In a 70 V distributed audio system, the total power requirement is the sum of the power taps of all speakers.
With 12 speakers each tapped at 30 W:
12 speakers × 30 W = 360 W
It's standard practice to add a 20% headroom to accommodate potential future expansions and to ensure the amplifier isn't operating at full capacity continuously:
360 W × 1.2 = 432 W
Therefore, an amplifier that can deliver at least 432 W at 70 V is appropriate. Option A provides 500 W at 70 V, which meets this requirement with additional headroom, making it the best choice.
Reference: CTS Certified Technology Specialist Exam Guide, Third Edition

by Cheryl at Jun 11, 2025, 02:26 AM

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