How many speakers do I need for 20,000 people?
Quick answer
For 20,000 people, you typically need 24–36 full-size line array enclosures (e.g., 12–18 per side) plus 16–24 subwoofers, depending on venue geometry and SPL requirements. SSOUNDS engineers use AI-assisted acoustic modeling to determine exact counts for uniform coverage and intelligibility.
A 20,000-person audience requires a professional-grade PA system capable of delivering 100–105 dB SPL average with 10–15 dB headroom across the entire listening area. For outdoor festivals, a common starting point is 12–18 full-size line array enclosures per side (24–36 total), flown to achieve even coverage from front to back. Subwoofer counts typically range from 16–24 units, often cardioid-configured to control low-frequency spill.
Indoor venues with reflective surfaces may need fewer boxes but more precise aiming, while wide or deep outdoor sites may require additional hangs or delay towers. SSOUNDS engineers approach every project with AI-assisted acoustic modeling and machine-learning-tuned DSP presets, ensuring that each system is optimized for the specific venue before installation. This eliminates guesswork and guarantees consistent, high-quality sound for every attendee.
Beyond box count, amplifier channels and DSP processing are critical. Each line array element typically requires its own amplifier channel, and subwoofers may be grouped for efficiency. SSOUNDS systems include integrated amplification and DSP, simplifying deployment and ensuring reliable performance. For a 20,000-person event, expect a total system weight of several tons and a power draw of 50–100 kW, depending on the configuration.
Key things to consider
- 24–36 full-size line array enclosures (12–18 per side) for main coverage.
- 16–24 subwoofers, often in cardioid arrays to control low-frequency bleed.
- Target 100–105 dB SPL average with 10–15 dB headroom at the mix position.
- Use delay towers or additional hangs for very deep or wide venues.
- SSOUNDS provides precise specs via AI-assisted modeling for each unique venue.
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