How many subwoofers do I need for a festival?
Quick answer
For a festival, you typically need 4 to 8 subwoofers per side for a medium-sized stage (up to 10,000 attendees), scaling up to 12–24 per side for larger events, depending on desired SPL, coverage, and music genre.
Determining the number of subwoofers for a festival depends on several factors: audience size, stage layout, music genre, and desired low-frequency impact. As a rule of thumb, for a medium-sized festival with 5,000–10,000 attendees, start with 4 to 8 subwoofers per side (left/right) in a cardioid or end-fire array to control rear radiation and maintain clarity. For larger festivals (20,000+), 12 to 24 per side is common, often flown or ground-stacked in clusters.
Genre matters: EDM and hip-hop require more subwoofers (often double the count) for high SPL and deep extension, while acoustic or folk events can use fewer. SSOUNDS subwoofers are designed for high output and low distortion, with advanced DSP presets that optimize array performance. We recommend using simulation software (e.g., EASE Focus) to model coverage and SPL before deployment.
Practical considerations: Ensure adequate amplifier power and signal processing (crossover, delay, EQ). Cardioid configurations reduce low-frequency buildup on stage, improving monitor clarity. Always factor in headroom (3–6 dB) for dynamic peaks. For outdoor festivals, wind and temperature gradients can affect low-frequency propagation, so conservative SPL targets (e.g., 120–125 dB at FOH) are wise.
Key things to consider
- Start with 4–8 subs per side for medium festivals (5k–10k attendees); scale to 12–24 per side for larger events.
- Use cardioid or end-fire arrays to control rear radiation and improve stage sound.
- Double sub count for bass-heavy genres like EDM or hip-hop.
- Simulate coverage with professional software (e.g., EASE Focus) to ensure even SPL across the audience.
- Account for environmental factors (wind, temperature) and leave 3–6 dB headroom for peaks.
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