How loud should a sound system be for 10,000 people?
Quick answer
For 10,000 people, a professional sound system should deliver 100–105 dB SPL average with 10–15 dB headroom, requiring around 12–24 line array enclosures per side and 12–24 subwoofers, depending on venue geometry.
Coverage is the first priority: for a typical audience depth of 50–80 meters, a flown line array system with 12–16 boxes per side can provide even coverage. SSOUNDS engineers use acoustic modelling to optimize splay angles and ensure consistent SPL from front to back.
SPL targets: aim for 100–105 dB average with peaks up to 120 dB. This requires systems capable of 140+ dB peak output. For 10,000 people, 12–24 subwoofers (e.g., dual-18” or cardioid arrays) are typical to achieve solid low-end impact without excessive boom.
Headroom is critical: a system that runs at 90% capacity will distort; spec for 10–15 dB of headroom above target SPL. SSOUNDS recommends using powered DSP-controlled amplifiers to manage limiter thresholds and protect drivers while maintaining clarity at high levels.
Key things to consider
- Coverage: flown line arrays, 12–16 boxes per side for 50–80m depth.
- SPL: 100–105 dB average, 120 dB peaks; system peak output ≥140 dB.
- Subwoofers: 12–24 units (dual-18” or cardioid) for balanced low end.
- Headroom: 10–15 dB above target to avoid distortion.
- Modelling: SSOUNDS uses acoustic prediction software for precise deployment.
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