How many watts of speaker do I need for a conference?
Quick answer
For a conference, aim for 500–1000 watts of continuous power per speaker for rooms up to 200 people, but wattage alone isn't the key—coverage, clarity, and system design matter more.
Wattage is often misunderstood. For a conference, speech intelligibility and even coverage are far more important than raw power. A 200-watt speaker with high sensitivity and controlled dispersion can outperform a 1000-watt consumer speaker in a noisy room. SSOUNDS designs its point-source and line array systems to deliver clear, consistent sound across the audience area without excessive SPL.
For small to medium conference rooms (up to 100 people), two 300–500 watt powered speakers with 12-inch woofers are usually sufficient. For larger halls (200–500 people), consider a small line array system like SSOUNDS’ compact arrays, which provide 120–130 dB peak SPL and excellent pattern control. Always factor in room acoustics, ceiling height, and background noise.
Instead of focusing on wattage, calculate required SPL: for speech, 75–85 dB at the back row with 10–15 dB headroom is typical. Use speaker sensitivity (e.g., 95 dB 1W/1m) to estimate power needs. A professional installer can model coverage using software like EASE or SSOUNDS’ own prediction tools to ensure every seat hears clearly.
Key things to consider
- Prioritise sensitivity and coverage over raw wattage; a high-sensitivity speaker needs less power to achieve target SPL.
- For up to 100 people: two 300–500W speakers (12-inch) on stands or flown; for 200+: consider a compact line array.
- Aim for 75–85 dB at the back row with 10–15 dB headroom; use a sound level meter to verify.
- Include a subwoofer only if presenting multimedia with low-frequency content; for speech alone, full-range tops suffice.
- Always test the system in the actual room; acoustics and placement dramatically affect perceived loudness.
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