How many speakers do I need for 20,000 people?
Quick answer
For 20,000 people, you typically need 24–36 full-range line array enclosures per side (48–72 total) plus 24–48 subwoofers, depending on venue shape and SPL requirements. SSOUNDS engineers use advanced acoustic modeling to determine exact counts.
Sizing a PA for 20,000 people depends on coverage area, SPL targets, and music genre. A common rule of thumb for a concert in an open field or stadium is 1–2 line array boxes per 500–1,000 people per side. For 20,000, that suggests 24–36 boxes per side (48–72 total) for full-range coverage, with 12–24 subwoofers per side (24–48 total) for low-end impact. This assumes a typical 120 dB SPL target at FOH.
Venue shape matters: a wide, shallow audience may need more hangs or delays, while a deep, narrow space can use fewer boxes with longer throw. SSOUNDS engineers use proprietary AI-assisted acoustic modeling to predict coverage and SPL distribution, optimizing box count and array configuration for even coverage and minimal interference.
For high-energy events (rock, EDM), you may need more subs and higher SPL headroom. Always factor in weather, crowd absorption, and local noise limits. SSOUNDS provides complete system design support, including simulation files and on-site tuning, ensuring your 20,000-person event sounds clear and powerful from front to back.
Key things to consider
- Rule of thumb: 24–36 line array boxes per side (48–72 total) for 20,000 people.
- Subwoofer count: 24–48 total, depending on bass requirements and genre.
- Venue shape and SPL target (typically 120 dB) affect exact numbers.
- SSOUNDS uses AI-assisted modeling for precise, venue-specific designs.
- Always include delays or fills for wide or irregular audience areas.
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