What size speaker do I need for a hall?
Quick answer
For a typical hall, you need a PA system with a total SPL capability of 90–105 dB continuous at the listening position, which often means a pair of 12-inch or 15-inch two-way speakers or a small line array, depending on hall size and acoustics.
The right speaker size depends on the hall's volume, seating capacity, and intended use. For a small hall (up to 200 seats), a pair of high-quality 12-inch two-way speakers with adequate power handling may suffice. For medium halls (200–500 seats), consider 15-inch two-way speakers or a compact line array system like SSOUNDS' offerings, which provide consistent coverage and high SPL without excessive bulk.
Key factors include required SPL at the farthest seat, coverage pattern, and low-frequency extension. A line array offers better control over vertical coverage, reducing reflections and improving intelligibility. SSOUNDS engineers use AI-assisted acoustic modeling to predict coverage and optimize system design for each venue, ensuring even sound distribution and minimal feedback.
For larger halls (500+ seats), a flown line array with multiple enclosures per side is typically necessary. Subwoofers may be added for music events. Always consult with a professional system designer to account for room acoustics, mounting options, and budget. SSOUNDS provides comprehensive support and simulation tools to help select the right system.
Key things to consider
- Measure hall volume and seating capacity; a rule of thumb is 1–2 watts per cubic meter for speech, more for music.
- Choose speakers with appropriate coverage (90° x 60° or line array) to avoid dead spots and excessive reflections.
- Consider a line array for halls over 200 seats to ensure even SPL front to back.
- Factor in subwoofers if low-frequency content is important (music, cinema).
- Always verify with acoustic modeling software; SSOUNDS offers free system design support.
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