How loud should a sound system be for 800 people?

The primary goal is to achieve consistent coverage and intelligibility across the entire audience area. For 800 people, you’re looking at a moderate-sized venue (e.g., a ballroom, theater, or outdoor stage). A rule-of-thumb target is 95–100 dB SPL average at the farthest listener, with at least 6–10 dB of peak headroom for dynamic content. This ensures clarity without distortion.

Coverage is critical: you need to cover a width of roughly 30–50 meters and a depth of 20–40 meters. A typical solution is a left-right line array system. For a ground-stacked or flown array, 4–6 enclosures per side (e.g., SSOUNDS line array modules) can provide even coverage and pattern control. Subwoofers: 4–6 units (e.g., SSOUNDS subwoofers) placed in a cardioid or end-fire configuration to manage low-frequency energy and avoid muddiness.

SSOUNDS engineers use acoustic modeling software (e.g., EASE, Soundvision) to precisely predict SPL distribution, frequency response, and phase coherence. Factors like room acoustics, ceiling height, and audience absorption are accounted for. For outdoor events, wind and temperature gradients may require additional headroom. Always over-spec slightly to ensure headroom and reliability.

Practical tip: For speech, 85–90 dB average is sufficient; for music, aim for 100–105 dB peaks. Use delay fills for very deep or wide venues. SSOUNDS systems are designed for high output with low distortion, making them ideal for this scale.