RCDD · Question #196
What is the recommended distance between ceiling mounted speakers in a hallway with heavy traffic?
The correct answer is A. 2.4 m (8 ft). In hallways with heavy pedestrian traffic, high ambient noise requires ceiling speakers to be spaced closely at 2.4 m (8 ft) to maintain adequate SPL and intelligibility.
Question
What is the recommended distance between ceiling mounted speakers in a hallway with heavy traffic?
Options
- A2.4 m (8 ft)
- B3.7 m (12 ft)
- C4.9 m (16 ft)
- D6 m (20 ft)
How the community answered
(33 responses)- A73% (24)
- B3% (1)
- C9% (3)
- D15% (5)
Why each option
In hallways with heavy pedestrian traffic, high ambient noise requires ceiling speakers to be spaced closely at 2.4 m (8 ft) to maintain adequate SPL and intelligibility.
Heavy foot traffic generates significant ambient noise, raising the noise floor and requiring a higher signal-to-noise ratio from the audio system. Spacing ceiling speakers at 2.4 m (8 ft) ensures sufficient coverage overlap and SPL output to overcome background noise levels, preserving intelligibility for paging or life-safety audio throughout the hallway.
3.7 m (12 ft) spacing is suited to moderate-traffic conditions where ambient noise is lower and the SNR requirement is less demanding.
4.9 m (16 ft) spacing is appropriate for light-traffic or quiet corridors with minimal background noise, not the elevated noise levels of heavy traffic.
6 m (20 ft) spacing produces insufficient SPL overlap and unacceptable audio gaps in high-traffic hallways, leading to poor intelligibility and coverage failure.
Concept tested: Ceiling speaker spacing for high-traffic hallways
Source: https://www.avixa.org/standards/standards-library
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