Speaker Planner
Results update live. The 3D stage below shows your setup — your LED wall and speaker choices are shared between tools.
Speakers needed
4
L/R pair + 2 fills
Coverage / box
6.0 m
Width at front row (3.0 m)
Front-row SPL
114.0 dB
at 3.2 m, one box
Back-row SPL
96.0 dB
at 25.0 m, one box
Back row falls 4.0 dB short of the 100 dB target. Add delay speakers part-way back, choose a louder box, or consider a line array. Front-to-back level difference: 18.0 dB — large; delays would even this out.
How this is calculated
- Coverage width at throw D = 2 × D × tan(H° ÷ 2). We evaluate it at the front row, where coverage is narrowest.
- Speakers ≈ 1 + ceil((venue width − one coverage width) ÷ (coverage width × (1 − overlap))), minimum 1. Stereo layout uses at least an L/R pair, rounded to even.
- SPL = sensitivity + 10·log10(watts) − 20·log10(distance), inverse-square law, one box, free field. Distances include height difference to 1.5 m ears.
- Multiple boxes covering the same seat add level (two coherent boxes ≈ +3 to +6 dB); rooms add reflections. Not included here.
Planning estimate only. Final system design, rigging loads and safety must be confirmed on site and with manufacturer data.
3D stage preview
Loading 3D preview…
Send these numbers to us and we’ll confirm the right setup for your venue.