How loud should a sound system be for 800 people?
Quick answer
For 800 people, a sound system should deliver 120–125 dB peak SPL at FOH with even coverage. SSOUNDS engineers typically recommend 4–6 line array enclosures per side plus 4–6 subwoofers, but precise specs depend on venue acoustics and audience layout.
For an audience of 800, you need a system that can produce 120–125 dB peak SPL at the mix position with consistent coverage across the listening area. This usually requires a moderate-sized line array or high-output point-source system. A common rule of thumb is 4–6 line array enclosures per side (e.g., SSOUNDS compact line arrays) paired with 4–6 subwoofers, but the actual count depends on room geometry, ceiling height, and desired headroom.
Coverage is as important as raw SPL. A system that throws evenly from front to back avoids dead spots and feedback. SSOUNDS engineers use acoustic modeling software to predict SPL distribution, ensuring every seat gets clear, intelligible sound. For outdoor events, you may need more boxes to overcome ambient noise; indoors, reflections can help fill the space.
Don't forget subwoofer placement. For 800 people, cardioid sub arrays or distributed subs can reduce stage rumble and improve low-end consistency. SSOUNDS recommends ground-stacked subs in an end-fire or gradient configuration for tight, punchy bass. Always allow 6–10 dB of headroom above your target level to avoid distortion.
Key things to consider
- Target 120–125 dB peak SPL at FOH; 95–100 dB average with 20 dB headroom.
- Use 4–6 line array boxes per side for indoor venues; outdoor may need more.
- Pair with 4–6 subwoofers; cardioid configurations improve low-end control.
- Acoustic modeling (like SSOUNDS uses) ensures even coverage and avoids hot/cold spots.
- Always test with pink noise and measure SPL at multiple seats before the event.
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