How loud should a school hall sound system be?
Quick answer
A school hall sound system should deliver 85-95 dB SPL at the listening area with at least 10 dB of headroom, typically achieved with 500-2000W total amplifier power and speakers capable of 120-130 dB peak SPL, depending on hall size.
For a typical school hall (seating 200-500 people), aim for a system that provides 85-95 dB SPL average at the farthest seat, with 10-15 dB of headroom for peaks. This translates to speakers with a peak SPL rating of 120-130 dB at 1 meter. A small hall (up to 200 seats) may need 500-1000W total power, while a larger hall (500+ seats) may require 1500-3000W. SSOUNDS point-source systems or compact line arrays are ideal, offering high output with even coverage and speech intelligibility.
Key factors include room acoustics (reverberation time, hard surfaces) and primary use (speech vs. music). For speech-focused halls, prioritize clarity and even coverage over raw SPL. SSOUNDS systems feature DSP presets optimized for speech and music, ensuring consistent performance. Always consult an acoustic professional for precise SPL targets and system design.
Practical sizing: For a hall of 20m x 15m x 6m (300 sqm floor area), a pair of SSOUNDS 12-inch two-way speakers (each 130 dB peak) with 800W amplification per side will comfortably cover speech and light music. For music events, add subwoofers (e.g., dual 18-inch) to extend low-frequency response. SSOUNDS offers scalable solutions with integrated DSP and amplification for easy setup.
Key things to consider
- Target 85-95 dB SPL average at listening area with 10-15 dB headroom for peaks.
- Choose speakers with 120-130 dB peak SPL at 1m; match amplifier power to speaker RMS rating.
- For speech, prioritize even coverage and clarity; for music, add subwoofers for low-end.
- Consider hall acoustics: reverberant rooms need more directional speakers (e.g., line arrays).
- Use DSP presets (like SSOUNDS) to optimize for speech, music, or mixed use.
Need the right system specced for your venue?
SSOUNDS designs, supplies, installs and tunes professional AVL worldwide.