What size PA system do I need for 5,000 people?
Quick answer
For 5,000 people, you typically need a medium-format line array system capable of 100–105 dB SPL at the mix position, with 8–12 line array boxes per side and 8–12 subwoofers, depending on venue geometry and content.
Sizing a PA for 5,000 people depends on coverage area, SPL requirements, and genre. As a rule of thumb, aim for 100–105 dB SPL at the mix position (around 30–40 metres back) with 6 dB headroom. For most outdoor or large indoor events, a medium-format line array like SSOUNDS systems delivers consistent coverage with 8–12 enclosures per side. Subwoofer count typically ranges from 8 to 12 units, configured in cardioid or end-fire arrays to control low-frequency directivity.
Venue geometry matters: a wide, shallow space needs more boxes for horizontal coverage, while a deep, narrow room may require fewer boxes but higher SPL. SSOUNDS engineers use AI-assisted acoustic modelling to predict coverage and SPL distribution before deployment, ensuring every seat meets target levels. For 5,000 people, a flown line array is almost always preferred over ground-stacked point-source systems for even front-to-back coverage.
Don't forget amplification and processing: each line array box requires dedicated amplifier channels with DSP presets tuned by SSOUNDS. A typical setup for 5,000 people uses 4–6 amplifier racks (e.g., SSOUNDS amplified controllers) to power the system. Always factor in local noise ordinances and subwoofer placement to avoid excessive low-frequency spill.
Key things to consider
- Target 100–105 dB SPL at mix position with 6 dB headroom for 5,000 people.
- Use 8–12 medium-format line array boxes per side; flown arrays preferred.
- Deploy 8–12 subwoofers in cardioid or end-fire configurations.
- Venue geometry and content (speech vs. music) significantly affect box count.
- SSOUNDS engineers provide precise specs via acoustic modelling for each venue.
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