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Link to the University of Exeter Back to Strand Archive home page Prelude Spotlights (1983)

Prelude Range

The Prelude range has a robust, yet attractive and lightweight, fully integrated housing of finned, extruded sides and interlocking pressure die-castings. A rear grab handle is fitted and the alloy fork is adjustable in height and also laterally.

All in the Prelude series embody unique, high standards of safety including a separable power connector which has to be withdrawn before hinged internal access can be gained, also a safety bond anchorage on the housing and a sprung safety clip over the colour frame runners.

Power Connector

Prelude 16/30

Prelude 16/30 Profile Spots
22 402 08

Beam shape is adjustable by the four built-in shutters, and the distribution of light within the chosen beam is determined by the peaky/flat adjustment knob recessed within the bottom die-casting. Gate runners are provided for the addition of a pattern (gobo) holder or for a drop-in iris diaphragm accessory for even smaller circular beams.

Beam spread - 16° - 30°
Throw - 13m - 5m

650W Lamp RSE/26, GY9.5

16° , Peaky field 54,000 cd, ½pk.angle 11°
  Flat field 44,000 cd, ½pk.angle 15°
32° , Peaky field 26,500 cd, ½pk.angle 19 °
  Flat field 20,500 cd, ½pk.angle 22 °

500W Lamp RSE/18, GY9.5
500W Lamp CP82, GY9.5


Prelude 28/40


Prelude 28/40 Profile Spots
22 405 04

New, medium to wide angle variable spread 650/500W Profile spot replacing and improving upon the previous fixed spread Prelude 30 and Prelude 40 in one, more flexible luminaire with exceptional performance.
Beam shape is adjustable by the four built-in shutters, and the distribution of light within the chosen beam is determined by the peaky/flat adjustment knob recessed within the bottom die-casting. Gate runners are provided for the addition of a pattern (gobo) holder or for a drop-in iris diaphragm accessory for even smaller circular beams.

Beam spread - 28° - 40°
Throw - 9m - 3m

650W Lamp RSE/26, GY9.5

28° , Peaky field 36,500 cd, ½pk.angle 16°
  Flat field 28,000 cd, ½pk.angle 26°
40° , Peaky field 25,500 cd, ½pk.angle 17°
  Flat field 15,500 cd, ½pk.angle 33°

500W Lamp RSE/18, GY9.5
500W Lamp CP82, GY9.5

Prelude F

Prelude Fresnel
22 500 01

High efficiency Fresnel spot, with a 120mm diameter short-focus lens, projecting a circular beam variable from a tight spot focus to a medium angle flood. Beam spread adjustment is by fast slide focusing with the fingertip knob recessed in the bottom die-casting. The soft, indeterminate edges to the beam are excellent for highlighting, without isolating, but can be contained and roughly shaped by the addition of a four door, rotatable barndoor accessory.
(Half peak beam angle 9° - 40°)

650W Lamp RSE/26, GY9.5
Spot 56,000 cd
½pk.angle 9°, tenth peak angle 17°
Flood 12,000
cd ½pk.angle 40°, tenth peak angle 52°
500W Lamp RSE/18, GY9.5 / 500W Lamp CP82, GY9.5
300W Lamp CP81, GY9.5
Weight 3.5kg

Prelude PC

Prelude PC

Prism-Convex spot projecting a circular beam variable, by a single recessed knob, from a tight spot to a wide flood with diffused edges to the beam. The beam edge quality, free from colouration, is softer than that of a Prelude profile spot, but tighter than that of the Fresnel; the Prelude PC therefore bridges the gap between these two extremes and is a very useful alternative, especially for fast, 'tight' lighting. The edges of the beam can be roughly shaped by the addition of a four-door barndoor attachment.
(Half peak beam angle 7.5° - 55°)


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