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Source Four vs S4 jr.

I have a need for 4 ellipsoidals. Lights will be mounted about 50 feet from the stage.  We have 60 Chauvet SlimPar LED over the stage and need some front lights. 

I am attracted to the S4JR due to price and size, but will they light my actors well from that distance? If I figure right a 14 or 19 degree lens?

Thoughts?

Thanks in advance

  • The S4jr fixtures are only available in 26, 36, 50, and a 25-50 zoom configuration. To actually get a 14 or 19 degree beam angle, you'll need the full Source Four. (The jr fixtures also do not have interchangeable lenses)

  • The Jr. doesn't have a 14 or 19 degree lens, only 26, 36, or 50 degree lenses. The Jr. Zoom is 25-50 degree. A Jr from 50 feet will provide adequate coverage. The Source Four is worth the extra money if you can afford it.

    Edit: Hans, I need to type faster.

  • Thanks for the quick reply. I have looked at so many specs I should have remembered the JR do not have 19 & 14. A little new to the lighting game. So a good recommendation would be either a S4 14 or 19 or a S4 Junior zoom for my needs? Knowing the limitations of the JR and weighing cost vs features/ performance.

  • You can pretty easily calculate your beam size and brightness by looking at the photometrics tables. Take a Look at https://www.etcconnect.com/WorkArea/DownloadAsset.aspx?id=10737461834
    or
    https://www.etcconnect.com/WorkArea/DownloadAsset.aspx?id=10737461933
    15m is approximately 50 feet. Remember that your true throw distance is the hypoteneuse on the triangle made from horizontal distance from the stage to the light and the vertical distance from the actors face to the light. From geometry A^2+b^2=C^2. If your light are 50' horizontally from the stage and 30' in the air then the True throw distance is C^2= 50^2+30^2 or TTD= 58'or 18m.
    At that true throw distance a 19deg will make a beam 19.5'w by 41' deep.
    Depending on how big you want the areas and how bright you might want to go with a 14deg or 19deg or maybe even some 10 degs.
    HTH
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