What are you planning to light with these front light leds. Honestly I can see using any form of led for fronts... But that's just my opinion.
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Anything from bands to speakers to choir concerts... they're supposed to replace a par56 rig (2 red, 2 blue, 1 n/c pink, 2 purple per side)... planning to put 2-4 LED pars per side. I'm getting 2 per side for now, and adding additionals (possibly AW units) in the future.
If you have the money go with the Chroma Q ColorForce, but that's just my opinion.
So, you have blue red and purple front light? Two cans of each? And only one can front light of N/C pink? How saturated are those reds, blues and purples? Are these the only lights in the space?
Definitely don't have the money for the Chroma Q...
You are correct on the current rig. Pretty saturated... I think red is R27, blues are R68 usually, and I don't remember purple. It changes a bit depending on what gels I have lying around (occasionally it becomes pink, amber, blue, red or such). Only wash/front light. We use LEDs for backlight/ uplight (backdrop/cyc depending on the gig)/ eye candy...
RGBA and here is why:
LED's are monochromatic devices that put out one frequency of light* and the three (R,G,B) frequencies they output for RGB are not in ideal locations of the spectrum. The color "pot-hole" is in the amber area, making a white balance hard to achieve. Having the amber LED output spike right in the middle of the dead area gives the fixtures a more pleasant and realistic apparent color balance.
*= White LEDs are actually UV LED's with phosphate inside them that produces multiple outputs that we perceive as white light. Your phosphate choices are about the same as they are for CFLs and they are all weak in the amber area.
Our eyes only perceive three colors as well, and if the center frequencies of our eyes and the frequencies of the LED's were the same, we would not need the Amber one. The same problem exists in television displays and this is why at least one manufacturer is producing RGBA displays. (A is decoded from the RGB signal.)
Why not opt for fixtures offering RGBAW.
Well I'd second the notion of using RGBA for the can's that are typically used as saturated colors and using AW for whatever can(s) you use as clear or N/C. Who's LED's are you currently using for back/up light? Do you like them, or wish they had more power? Consider how they function and then consider how LED's will function in a front light roll.
Some minor quibbles.
An led does not produce a single frequency, but a narrow band of frequencies. (typically around 10nm)
Our eyes have cells that respond to colored light, but the response is not narrow. Ie the red and green receptors will both fire for some frequencies of light. The issue is not the frequency of the
LED source, it is the narrowness of the frequencies output.
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