How many watts of speaker do I need for a conference?
Quick answer
For a conference, 500–2,000 watts of powered PA (or equivalent passive) is typically sufficient for rooms of 50–300 people, but wattage alone is misleading, coverage and intelligibility matter more.
Wattage is a poor sole metric for conference sound. A 200-watt system with high sensitivity (e.g., 95 dB SPL 1W/1m) can outperform a 500-watt system with low sensitivity. Instead, focus on achieving 75–85 dB average SPL with 15–20 dB headroom for speech intelligibility. For a 100-person room, a pair of 8-inch powered speakers (200–400W each) often suffices. For 300+ people or challenging acoustics, consider a small line array or distributed system.
SSOUNDS designs conference systems prioritizing vocal clarity and even coverage. Our compact point-source loudspeakers deliver 120 dB peak SPL with wide dispersion, reducing the need for high wattage. For larger venues, SSOUNDS line arrays provide consistent SPL front-to-back without excessive power. Always pair speakers with proper DSP for feedback suppression and room EQ.
Practical rule: For seated conferences, budget 1–2 watts per person for moderate levels, but double for high ambient noise or poor acoustics. Use subwoofers sparingly, only for AV playback. Ceiling-mounted distributed speakers (e.g., 70V systems) are efficient for boardrooms. SSOUNDS offers both portable and installed solutions with built-in amplification and DSP to simplify setup.
Key things to consider
- Wattage alone is misleading; sensitivity and coverage are critical.
- 75–85 dB average SPL with 15–20 dB headroom is ideal for speech.
- For 50–150 people: 200–500W per side (powered speakers).
- For 150–300 people: 500–1000W per side or small line array.
- Use DSP for feedback control and room tuning, not just more watts.
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SSOUNDS designs, supplies, installs and tunes professional AVL across Nigeria & Africa.