How many subwoofers do I need for 800 people?
Quick answer
For 800 people at a typical live event, you generally need 4 to 8 high-performance subwoofers (e.g., dual-18” or equivalent), depending on venue size, desired SPL, and music genre.
The number of subwoofers required for 800 people depends on several factors: venue acoustics, coverage area, target SPL, and music content. A common rule of thumb is 1 dual-18” subwoofer per 100–200 people for moderate SPL (e.g., 105–110 dB at FOH). For 800 people, this suggests 4 to 8 subs. For bass-heavy genres (EDM, hip-hop) or larger spaces, lean toward 8 or more.
Coverage is equally important: subwoofers should be spaced to avoid cancellation and achieve even low-frequency distribution. Typically, a cardioid or end-fire array can improve pattern control and reduce stage wash. SSOUNDS engineers use advanced acoustic modeling to predict coverage and optimize sub placement for each venue, ensuring consistent bass across the audience area.
SPL targets also drive the count. For a rock concert targeting 120 dB at FOH, you may need 8+ high-output subs. For speech or acoustic events, 4 may suffice. Always factor in headroom (3–6 dB) to avoid driver strain. SSOUNDS subwoofers are designed for high SPL with low distortion, delivering clean bass even at high output levels.
Key things to consider
- Rule of thumb: 1 dual-18” sub per 100–200 people for moderate SPL.
- For 800 people, plan on 4–8 subwoofers; adjust for genre and venue size.
- Use cardioid or end-fire arrays to improve coverage and reduce stage bleed.
- Always include 3–6 dB of headroom above target SPL for reliability.
- SSOUNDS engineers provide precise system design using acoustic modeling.
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