What size PA system do I need for 800 people?
Quick answer
For 800 people, you typically need a medium-format PA system delivering 120–125 dB SPL at FOH with even coverage. A typical rig would be 4–6 line array enclosures per side plus 4–6 subwoofers, but SSOUNDS engineers use acoustic modelling to match the exact venue geometry and audience shape.
Sizing a PA for 800 people depends on the venue type (indoor vs outdoor), room acoustics, and desired headroom. As a rule of thumb, aim for 120–125 dB SPL at the mix position with consistent coverage across the audience area. For a typical indoor space, a medium-format line array system with 4–6 boxes per side and 4–6 subwoofers (cardioid or end-fire) is a solid starting point. Outdoor events may require more cabinets or higher-SPL models.
SSOUNDS engineers approach every system design with acoustic modelling software, factoring in audience geometry, ceiling height, and coverage requirements. This ensures you get the right number of boxes, optimal splay angles, and precise subwoofer placement — avoiding guesswork and costly over- or under-specification. Our line arrays are engineered for high intelligibility and consistent SPL, making them ideal for this audience size.
For 800 people, you also need to consider power and processing. A system with 2–4 amplifiers (e.g., SSOUNDS DSP amps) driving the mains and subs, plus a digital console with sufficient I/O, is typical. Don't forget stage monitors — 4–6 wedges or in-ear monitors for the performers. Always plan for a safety margin of 3–6 dB above your target SPL.
Key things to consider
- Target SPL: 120–125 dB at FOH for clear, dynamic sound.
- Indoor: 4–6 line array boxes per side + 4–6 subs; outdoor may need more.
- Use acoustic modelling (like SSOUNDS does) to match coverage to audience shape.
- Include 2–4 DSP amplifiers and a digital console with enough channels.
- Plan for stage monitoring: 4–6 wedges or IEMs for performers.
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