Projector Placement Basics

Projector placement is the single biggest factor in show safety and visual impact. Get it right and your zones are easy, your effects look professional, and your DSR writes itself. Get it wrong and you spend the show fighting beam geometry.

The golden rule: mount as high as possible. Every extra metre of height gives you more vertical separation from the audience, wider beam coverage, and better audience perspective on aerial effects. In a club with a 4 m ceiling, you might only get 3.5 m — just barely above the 3 m minimum. In a theatre with 8 m trim, you have room to work.

Rear projection (projector behind the audience, beams going away from them toward the stage) is inherently safer than front projection (projector on stage, beams going toward the audience). With rear projection, the audience sees the beams from behind — they can never look directly into the aperture. Use rear projection whenever the venue geometry allows it.

For multiple projectors, consider beam overlap carefully. Two projectors whose beams can converge at the same point produce cumulative irradiance at that point. If Projector A delivers 40% of the MPE and Projector B delivers 40% of the MPE at the same spot, the combined exposure is 80% — still below MPE, but not by much. Map out overlap zones on your venue plan.

Side-mounted projectors (on walls or side trusses) create interesting cross-beam effects but introduce horizontal beam paths that may sweep across exits, bars, or technical positions. Every horizontal beam path needs a termination point — a wall, a beam dump, or at minimum a surface assessment.

For outdoor shows, projector height becomes even more critical. Ground-mounted projectors pointing upward require careful assessment of the beam path through the entire accessible airspace above the audience. Elevated positions (scaffold towers, building roofs) give much better geometry for above-audience effects.