How many speakers do I need for 800 people?
Quick answer
For 800 people, a typical professional system uses 6–8 line array enclosures per side (e.g., SSOUNDS compact line arrays) plus 4–6 subwoofers, depending on venue geometry and SPL requirements.
Coverage is the primary driver: you need enough speakers to evenly cover the audience area without dead spots. For 800 people in a standard indoor venue (e.g., 30m deep × 20m wide), a left-right line array with 6–8 boxes per side provides consistent 120° horizontal coverage and controlled vertical dispersion. SSOUNDS engineers use acoustic modelling software to optimize array curvature and splay angles for uniform SPL across all seats.
SPL targets: for speech reinforcement, 85–90 dB average with 10 dB headroom is sufficient; for music, aim for 95–100 dB average with 15–20 dB headroom. A typical SSOUNDS compact line array delivers 130–135 dB peak SPL per box, so 6–8 boxes per side easily achieve 100+ dB at the back row. Subwoofer count depends on bass energy: 4–6 single-18" subs (e.g., SSOUNDS subwoofers) in cardioid or end-fire arrays provide tight, punchy low end for 800 people.
Rule-of-thumb: start with 1 line array box per 50–100 people (depending on throw distance) and 1 sub per 150–200 people. For 800 people, that suggests 8–16 main boxes and 4–6 subs. However, venue shape, ceiling height, and noise floor affect final counts — always model the space. SSOUNDS offers free system design support to ensure accurate sizing.
Key things to consider
- 6–8 line array boxes per side (left/right) for even coverage
- 4–6 subwoofers for adequate low-frequency impact
- SPL target: 95–100 dB average for music, 85–90 dB for speech
- Use acoustic modelling (e.g., SSOUNDS software) for precise deployment
- Adjust based on venue shape, height, and background noise
Need the right system specced for your venue?
SSOUNDS designs, supplies, installs and tunes professional AVL across Nigeria & Africa.