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ARRIMAX 18/12

Truly "The Most Powerful HMI Light On The Planet" the ARRIMAX 18/12 combines the variable beam spread of a Fresnel fixture and the light output of a PAR fixture. The ARRIMAX uses a unique multi-faceted reflector that eliminates the need for spread lenses, This powerful unit produces a shadow that is crisp, clean and sharp, similar to that of vintage carbon arc fixtures. The 580mm (22.8”) diameter, specular, flatted reflector can be adjusted to provide continuous focus from 15° – 50° and, since the ARRIMAX does not require a set of spread lenses, shadows are sharp and easily cut. An optional Spot Reflector with a beam angle of 8-15° produces an astonishing 11,570 FC at 50 feet which is brighter than the noon day sun.

18,000W Single Ended lamps use a sturdier GX51 lamp base for which ARRI engineers have designed a special lampholder. This new lampholder alleviates mechanical stress from the lamp pins, which now serve only as an electrical connection. The lamp clamping mechanism is self-aligning and uses a rugged, recessed lamp lock handle. To ensure that crews can easily use 12,000W lamps or versions of 18K Single Ended lamps with G38 bases, the new lampholder accepts either lamp type with no modification or adjustment required.

Weight 143 lbs. (65 kg)
Reflector ARRI, multi-faceted, paraboloidal-ellipsoidal shaped using high purity aluminum
Lampholder ARRI spring loaded lampholder and base support clamping mechanism for GX38 and GX51 lamp bases
Mounting 1 1/8" (29 mm) stand mount
Ballast See ARRI Electronic Ballasts
Distance 30 ft. (9.1 m) 50 ft. (15.2 m) 100 ft. (30.5 m) 150 ft. (45.7 m)
Spot Focus Beam Angle 15°        
Footcandles 14440 5198 1300 578
Beam Diameter 7.9 ft. 13.2 ft. 26.3 ft. 39.5 ft.
  2.4 m 4.0 m 8.0 m 12.0 m
Flood Focus Beam Angle 50°        
Footcandles 1495 538 135 60
Beam Diameter 28.0 ft. 46.7 ft. 93.3 ft. 140.0 ft.
  8.5 m 14.2 m 28.4 m 42.6 m

Lens Performance

Spot Performance at any distance:  
Footcandles (or lux) = 12,996,000 ÷ Distance² Beam Diameter = Distance x 0.26
Flood Performance at any distance:  
Footcandles (or lux) = 1,345,900 ÷ Distance² Beam Diameter = Distance x 0.93
ARRIMAX 18 12 Dimensional Drawing Download (pdf, 1.2 MB)
ARRIMAX 18 12 Spare Parts Download (pdf, 1.27 MB)
ARRIMAX 18 12 Operating Instructions Download (pdf, 142 KB)

 

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