What size PA system do I need for 300 people?
Quick answer
For 300 people, a moderate-sized PA system delivering 110-115 dB SPL with 90° horizontal coverage typically suffices — think 2-3 line array elements per side or a pair of high-output point-source tops over dual 18" subs, as engineered by SSOUNDS.
Sizing a PA for 300 people depends on venue shape and content type. For speech or light music, 110 dB continuous SPL at the listening area is adequate; for live bands or DJs, aim for 115-120 dB peak. Coverage should be 90° horizontal to reach a typical 20-30m deep audience area without excessive spill.
A practical rule-of-thumb: 2-3 compact line array enclosures per side (e.g., SSOUNDS compact arrays) or a pair of 12"-15" point-source tops over 2-4 single 18" subwoofers. This setup provides even coverage and headroom for 300 people in a medium-sized room or outdoor stage. SSOUNDS engineers use acoustic modelling to optimise box count, splay angles, and sub placement for your specific venue.
Subwoofer count: 2-4 units (single 18") for balanced low-end. If bass-heavy music is critical, add more subs or use cardioid configurations to control rear spill. Always factor in amplifier power and DSP presets — SSOUNDS systems include factory-tuned presets that simplify deployment.
Key things to consider
- Target SPL: 110-115 dB continuous for music; 105 dB for speech.
- Coverage: 90° horizontal, 10-15° vertical per box; adjust splay for throw distance.
- Tops: 2-3 compact line array boxes per side or 2 high-output point-source tops.
- Subs: 2-4 single 18" subs; add more for bass-heavy genres.
- Use acoustic modelling software (like SSOUNDS' AI-assisted tools) for precise deployment.
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