How much LED do you need for a conference stage?
A conference stage has 1–3 LED zones: the main screen for presentations, 2 side screens for live camera when the room is deep and, optionally, scenic LED across the rest of the stage. For 200–500 people, 10–21 m² is usually enough, which means one screen from 4×2.5 m to 6×3.5 m. Above 500 people the side screens come in, and the total climbs to 33–75 m².
Updated: October 2026. Mobile Event.
What does the LED on a conference stage consist of?
Zone | What it shows | When you use it |
|---|---|---|
Main screen | Slides, video, charts | Always |
Side screens (IMAG) | The speaker, filmed live | Room deeper than 15 m or more than 500 attendees |
LED backdrop | Set, visual identity, session title | When the stage needs scenic design |
Confidence monitors | The current and next slide, for the speaker | Always, on the stage floor, facing the speaker |
IMAG stands for image magnification: the speaker's face, enlarged on screen so the back rows can see it. Confidence monitors aren't visible from the audience and don't count toward the m² total.
How many m² of LED for each room size?
Attendees | Setup | Total LED |
|---|---|---|
Under 200 | One 3.5×2 m or 4×2.5 m screen | 7–10 m² |
200–500 | One screen from 4×2.5 m to 6×3.5 m | 10–21 m² |
500–1,000 | 6×3.5 m main screen + 2 side screens of 3×2 m | 33 m² |
1,000–2,500 | 8×4.5 m main screen + 2 side screens of 4×2.5 m | 56 m² |
Over 2,500 | 10×5.5 m main screen + 2 side screens of 4×2.5 m | 75 m² |
The table is the starting point. The exact calculation comes from the distance to the last row and the type of content, using the method in the sizing guide.
When do you need side screens?
When the speaker's face gets too small for the back rows. With 400 people seated theater-style, the back rows are already 15–20 m from the stage. From there, the speaker's facial expression is no longer readable.
Side screens solve one more problem: the main screen stays on the slide, and the audience sees the slide and the speaker at the same time. Without them, the video director has to choose every second what to show.
Under 50–100 attendees, IMAG is rarely needed. Above 500, it's close to standard.
The cameras for IMAG and the video direction that switches between them are part of the package. Mobile Event films with professional 4K cameras and runs its own AV control, detailed on the AV direction page.
A center screen or LED across the whole stage?
There are 2 approaches, and both work:
A 16:9 center screen with a dark stage around it. Everything focuses on the slide and the speaker. Fewer m², a faster build, standard content.
An LED backdrop across the full width of the stage. For example, 12×4 m in P3.9, which is 48 m² and 3,072×1,024 pixels. The presentation runs in a 16:9 area in the middle, about 1,820×1,024 pixels, and the rest of the screen shows the set, the session title or the speaker. The whole stage carries one visual identity, and between sessions the screen changes the look of the room.
The second option needs a designer who builds templates at the exact resolution of the screen and an operator who runs them. For annual conferences, internal launches and filmed events, it's worth it.
What comes with every m² of LED?
Power. One m² draws about 190–270 W on average and 560–800 W at peak, depending on the panel. The 56 m² in the example for 1,000–2,500 people can call for 31–45 kW at peak. Check the venue's available power before you lock the size.
Weight. Panels weigh about 30 kg/m², without the structure. A flown 36 m² screen means more than 1 metric ton in panels alone, so the rigging points have to be verified.
Crew. For 30–60 m² of LED, at least 2–3 LED technicians plus a video operator.
Build time. Side screens and the backdrop add hours to the build. Ask the venue for access the day before for setups over 50 m².
Mobile Event owns 300 m² of LED, enough for a 75 m² stage plus spares and other rooms running in parallel. Conference setups are on the corporate conferences page. If you're considering LCD monitors instead of LED for a small room, see the LED screen vs videowall comparison.
Frequently asked questions
How much LED do I need for a 300-person conference?
Usually a main screen of 5×3 m or 6×3.5 m, which is 15–21 m². The exact size depends on the distance to the last row and on how much text the presentations have.
When do I need side screens at a conference?
When the back rows are more than 15 m from the stage or when you have more than 500 attendees. Side screens show the speaker live, and the main screen stays on the presentation.
Do confidence monitors count toward the LED area?
No. They're separate monitors, also called comfort monitors, placed on the stage floor facing the speaker, so the speaker can see the current and next slide without turning toward the screen.
How much electrical power does the LED on a conference stage need?
About 190–270 W/m² on average and up to 560–800 W/m² at peak. A stage with 56 m² of LED can call for 31–45 kW at peak, on top of sound and lighting.
Is a full-stage LED backdrop better than a center screen?
It depends on the event. A full-stage backdrop changes the look of the room between sessions and looks good on a broadcast, but it needs templates built at its resolution. A center screen is simpler and faster to build.
