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Ranum Efterskole: From Bomb Shelter to Blockbuster

A bomb shelter turned blockbuster.

Ranum Efterskole wanted a room where students could actually watch a film, not squint at a wall. We delivered the big screen, serious sound, and the acoustics to make it happen.

Rows of empty, modern gray seats in a small, dark theater or cinema, with a projector mounted on the ceiling and black curtains along the walls.

We turned an old bomb shelter at Ranum Efterskole into a proper cinema: big screen, serious sound, zero compromises.

Case study

From Bomb Shelter to Blockbuster

Ranum Efterskole wanted a proper cinema, not a projector wheeled into a common room. We turned an old bomb shelter into a real screening room: big picture, serious sound, and the acoustics to match.

A modern building with a large, colorful rainbow mural featuring a white tree-like design above glass doors; trees and green grass frame the scene.
The brief

From Common Room to Cinema

Ranum Efterskole wanted to turn an existing room into a cinema where students could gather for films, lessons, and shared moments. We delivered and installed the complete technical setup: picture, sound, and acoustics working together to nail the cinema feel.

    Rows of empty, dark gray theater seats with a textured fabric surface are shown in close-up. A black curtain covers the background, and seat numbers are visible on small metal plaques.
    An empty movie theater with rows of gray seats faces a blank projection screen. Black curtains and a ceiling-mounted projector are visible, creating a modern, minimalist cinema atmosphere.

    Big Picture, Big Sound

    The projector throws a big, sharp image that keeps the film alive even with a room full of students. It’s sized to the room, so everyone gets a clear view of the screen. A great picture needs sound to match. The room runs on a proper speaker set and a serious amp, so dialogue, music, and effects all come through clearly, wall to wall.

      Rows of empty, dark gray theater seats face a ceiling-mounted projector in a dimly lit room with square ceiling lights.
      The kit

      What We Delivered

      • Projector

        Laser projector, 6,200 lumens

      • Screen

        133" screen (2,944 × 1,656 mm)

      • Sound

        5.1 surround system, upgradeable to 7.2: front centre 5", front L/R 8", rear L/R 5", sub 2×8"

      • Drape

        26 metres of black stage drape (300g, 75% fullness), height-matched to the room's different levels

        Rows of empty, dark fabric theater seats beside illuminated steps, with black curtains hanging alongside the aisle.

        Better Acoustics, Better Mood

        Sound-dampening stage drapes cut the room’s reverb and keep dialogue crisp. The dark fabric doubles up on the cinema mood and helps control light in the room.

          • Rows of empty theater seats face a large blank screen in a dark room. A projector is mounted on the ceiling, and black curtains cover the side wall.
          • A small room with five red chairs, movie posters on white walls, gray carpet, and green plant leaves in the foreground. The posters include The Shining, Ghostbusters, and Pulp Fiction.
          • Rows of empty, dark gray theater seats with a textured fabric surface are shown in close-up. A black curtain covers the background, and seat numbers are visible on small metal plaques.
          • A row of empty, dark gray theater seats faces a ceiling-mounted projector in a modern, dimly lit cinema room with black walls and bright ceiling lights.
          • A ceiling-mounted white projector is turned on in a dark room, projecting blue light. Black curtains and illuminated ceiling panels are visible in the background.
          • Rows of empty gray theater seats face a bright projector light in a dark, curtained cinema room.
          • A large yellow-brick building stands behind a wooden fence with a sign reading Ranum Efterskole College. Green trees frame the scene under a partly cloudy blue sky.
          • Rows of empty, modern, dark gray theater seats in a small cinema room with black walls, ceiling lights, and a ceiling-mounted projector.
          • A close-up view of dark curtains hanging from metal rings on a shiny curtain rod, against a dimly lit wall.

          Why this setup works

          Rows of empty, dark gray theater seats face a ceiling-mounted projector in a dimly lit room with square ceiling lights.
          A ceiling-mounted white projector is turned on in a dark room, projecting blue light. Black curtains and illuminated ceiling panels are visible in the background.
          Rows of empty, modern, dark gray theater seats in a small cinema room with black walls, ceiling lights, and a ceiling-mounted projector.
          The fit

          Built for the room

          Every fixture is sized and placed to match the actual space, not a generic template.

          The flexibility

          One Room, Many Uses

          Film nights, lessons, and assemblies all run through the same room and the same setup. No swapping gear between them.

          The upkeep

          Reliable day to day

          Built to run without babysitting, so staff can focus on the event, not the tech.