How loud should a concert sound system be?
Quick answer
A concert sound system should deliver 100–110 dB SPL at FOH for most genres, with peaks up to 120 dB, and at least 6 dB of headroom above the target level to avoid distortion.
The ideal loudness depends on the genre and venue size. For rock or EDM concerts, target 105–110 dB continuous with 120 dB peaks. Acoustic or classical events may need only 95–100 dB. Always ensure the system can hit these levels cleanly without clipping — headroom of 6–10 dB is essential.
System selection starts with calculating required SPL at the farthest seat. For a 1,000-capacity venue, a single SSOUNDS line array with 8–12 boxes per side can deliver 110 dB+ at 40m. For larger festivals, add more cabinets or use flown subwoofer arrays for even coverage. Always model coverage with prediction software to avoid hot spots and dead zones.
Don't overlook low-frequency headroom. Subwoofers need to be sized to handle kick drum transients — typically 3–6 dB more headroom than the mains. SSOUNDS subwoofer arrays are designed to couple coherently, providing punch without muddiness. Finally, use a calibrated SPL meter at FOH and set limiters to protect both ears and equipment.
Key things to consider
- Target 100–110 dB continuous, 120 dB peaks for most concerts; adjust for genre.
- Ensure at least 6 dB of system headroom above target level to prevent distortion.
- Calculate SPL at farthest seat; use line arrays for consistent coverage in medium to large venues.
- Size subwoofers for 3–6 dB extra headroom to handle kick drum transients.
- Always model the system acoustically and set limiters based on measured SPL.
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