"What diameter should our dome be?" is the first question on every immersive theater project — and the most expensive one to get wrong. Diameter drives screen area, panel count, steel tonnage, content resolution and, ultimately, ticket capacity. We have delivered LED domes from 5 m to 60 m; here are the four inputs that actually decide the answer.
Input 1: Seats and Show Capacity
Start from the business case, not the screen. A 7 m-diameter dome comfortably serves a boutique theater of a few dozen riders per cycle; a 20–22 m-diameter dome seats 100+ guests per show; a mega dome becomes a destination in itself. Work backwards: daily visitors × show length → guests per cycle → dome diameter that fits the seating bowl under the chosen coverage angle.
Input 2: Minimum Viewing Distance
The closest viewer should sit far enough back that individual pixels disappear — roughly 3× the pixel pitch in meters as a minimum viewing distance (P1.9 → ~5.7 m). Close seating also widens the coverage angle guests can see comfortably. We size pitch and diameter together against the seat layout, which is why the same 20 m-diameter dome may use P2 in one venue and P2.5 in another.
Input 3: The Building You Actually Have
Dome diameter consumes interior volume fast: a 20 m-diameter dome needs roughly 20 m of clear width and significant height at the spring line. Existing columns, ceiling steel and escape routes all constrain the geometry. Send us the architectural drawings — we check loads, volumes and mounting details free of charge before you commit to a size.
Input 4: Budget — Which Grows With the Square of the Radius
Screen area scales with πr², so doubling the diameter roughly quadruples panel count. That is why 5–8 m training domes, 14–22 m commercial domes and 60 m mega domes are three different pricing worlds. The good news: per-square-meter cost falls as diameter rises, because structure is shared across more area.
Real Delivered Examples
| Delivered Dome | Diameter | Configuration |
|---|---|---|
| Twin Immersive Domes — Beijing | 5 m / 8 m | Sound-transparent · P2 |
| Flight Theater Dome — Shenzhen | 7 m | Sound-transparent · P1.9 |
| Ethnic-Culture Dome — Guiyang | 14 m | Sound-transparent · P3 |
| Immersive Dome — Changzhi | 20 m | Sound-transparent · P2 |
| Flight Theater Dome — Chengdu Happy Valley | 22 m | Sound-transparent inner dome |
| Kongtong Island Mega Dome — Yantai | 60 m | Asia's largest, 5,300 m², kinetic & openable |
A Practical Rule of Thumb
- 2–8 m diameter: training, R&D, VIP preview domes, single-exhibit theaters.
- 10–20 m diameter: museum and cultural-tourism immersive theaters, mid-size flight theaters.
- 20–30 m diameter: commercial flight theaters with 100+ seats per cycle and strong photo value.
- 40 m+ diameter: landmark destination domes — engineered in phases, typically with kinetic features.
Unsure between two diameters? Model both with real seat counts and a 10-year show schedule. The revenue delta usually decides it — and we will run the geometry for both options at no cost.
Tell us your seat target and building drawings via the inquiry form, and we will return a diameter recommendation with pitch, area and budget ranges within one business day.