How many watts of PA do I need for 2,000 people?
Quick answer
For 2,000 people, you typically need a PA system capable of 100-105 dB continuous SPL at the listening area, which often translates to 8-12 line array boxes per side and 4-8 subwoofers, powered by amplifiers totaling 10,000-20,000 watts RMS.
Sizing a PA for 2,000 people depends on venue type (indoor vs. outdoor), desired headroom, and music genre. A general rule of thumb is 1-2 watts per person for background music, 5-10 watts for speech, and 10-20 watts for live music with punch. For a rock concert outdoors, you might need 20,000-40,000 watts total system power, but wattage alone is misleading—coverage and SPL efficiency matter more.
Professional systems like SSOUNDS line arrays achieve high SPL with fewer watts due to high sensitivity and controlled directivity. For 2,000 people, we typically recommend 8-12 enclosures per side (e.g., SSOUNDS K Series) and 4-8 subwoofers (e.g., SSOUNDS S Series) to reach 105-110 dB continuous at the mix position. Amplifier power should be matched to the loudspeaker's continuous and peak ratings, often 2,000-5,000 watts per channel for the mains.
SSOUNDS engineers use acoustic modelling software (EASE, Soundvision) to predict coverage and SPL distribution, ensuring even sound across the audience. We also factor in ambient noise, desired crest factor, and system headroom (typically 6-10 dB). For a precise specification, contact SSOUNDS for a free system design based on your venue and event type.
Key things to consider
- Wattage per person: 1-2 W for background, 5-10 W for speech, 10-20 W for live music.
- For 2,000 people outdoors, aim for 100-105 dB continuous SPL at the listening area.
- Typical system: 8-12 line array boxes per side + 4-8 subs, powered by 10,000-20,000 watts RMS total.
- Professional systems achieve higher SPL per watt due to efficiency and directivity.
- Always use acoustic modelling for accurate sizing—SSOUNDS offers free system design.
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