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Wally was installing a sound system in a large room. People in the rear of the room could hardly hear what was being said. In the front of the room, just four feet from the speaker, the decibel level was 50dB. The back of the auditorium was 32 feet. What was the sound level at the back of the room?
Roy Pollack, CPP, SET, holds Level IV certification in the field of fire alarms from NICET is currently the director of Compliance for Devcon Security Services Corp., Hollywood, Fla., and may be reached at sdmtechtips@bnpmedia.com.
