Distributed audio system
2 min read · Updated November 12, 2026
Definition
A distributed audio system is a network of interconnected audio devices that deliver sound across multiple locations, often used for public address or background music.
In a distributed audio system, sound comes from many speakers spread through a space, each at a modest volume. Everyone hears the same music or announcement clearly, with no loud spot near a speaker and no quiet corners.
Key takeaways
Many small speakers cover an area evenly instead of one loud source.
Zones let you set different volume or content for different areas.
It suits shops, restaurants, offices, hotels and public buildings.
It can be analog or networked, and it can share content with signage screens.
How the system is built
A distributed system has a source, such as a media player or microphone, an amplifier or processor, and a number of speakers placed throughout the space. The system splits the signal and sends it to each speaker, often with volume set per zone.
Modern systems often send the audio over the network, so one cable per speaker is not needed and settings can be changed by software. Zones allow different parts of a building to get different content, such as music in the cafe and announcements everywhere.
Typical uses
Background music
Even, low-level music in shops, restaurants and hotel lobbies.
Announcements
Paging and notices that reach every zone.
Zoned content
Different audio in a gym floor, a lounge and a reception area.
Audio for signage
Sound for video screens delivered through the building’s speakers.
Common problems and how to avoid them
Uneven volume is the usual complaint: loud near speakers and thin in corners. It usually comes from too few speakers placed too far apart. Echo in hard-surfaced rooms is the second, and shows up when announcements are hard to understand.
Both are easier to solve in the design stage. Add speakers, lower the level at each and use processing to shape the sound for the room, instead of turning volume up to compensate for poor coverage.
Planning a distributed system
- 1
Divide the space into zones
Group areas by use and by how much their sound level and content should differ.
- 2
Choose speaker positions
Space speakers so coverage overlaps without hot spots.
- 3
Pick the amplification
Select amplifiers or powered speakers sized for the number of speakers.
- 4
Add control
Provide simple volume controls and, if needed, a processor for equalization and delay.
- 5
Commission and test
Walk each zone with a test signal and fine-tune levels.
Many quiet speakers beat a few loud ones
Lower volume at each speaker means less distortion and less irritation for people standing near one. Plan more speakers than first seems necessary.
Frequently asked questions
What is the difference between zones and speakers?
Can the audio come from my signage player?
Is distributed audio expensive?
Related terms
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