How loud should a sound system be for 300 people?

For an audience of 300, you need a system that provides clear, intelligible sound at 105-110 dB SPL (peak) across the listening area. This is enough headroom for speech and music without distortion. Coverage is critical: you want even SPL from front to back, typically achieved with a flown or ground-stacked line array of 2-3 elements per side, plus 2-4 subwoofers for low-end impact. A single point-source speaker may work for small rooms, but for larger or wider spaces, a line array ensures consistent coverage.

SSOUNDS engineers approach this with acoustic modeling software, simulating the venue's dimensions, audience layout, and acoustic properties to determine exact box counts, angles, and DSP settings. For 300 people in a typical hall (e.g., 20m deep, 15m wide), a system like SSOUNDS' compact line array with 2-3 elements per side and 2-4 subs would deliver the required SPL and coverage. The goal is to avoid hot spots and dead zones while maintaining headroom for dynamic peaks.

Practical rule-of-thumb: 1-2 kW of amplifier power per side for mains, with subs adding another 1-2 kW. But power alone isn't enough—system design (array length, splay angles, sub placement) matters more. Always measure with an SPL meter at mix position and adjust EQ to compensate for room modes. For outdoor events, you may need more subs and wider coverage.