ETC releases Source 4WRD PAR/PARnel

[MNicolai]

Announcement video from Jim Uphoff.

Same light engine as before but new PAR/PARnel fixture bodies to support them. Important to note that these are not retrofits. You won't be using S4WRD on your existing PARs anytime soon.

I would be interested in the technical explanation how the same light engine in a PAR is brighter than a 750W/115X HPL but darker than that same HPL in a profile, which is what it seems like is the case.

 

[sk8rsdad]

Well, that graph in the video comparing an HPL PAR to a S4WRD PAR is misleading, since the S4 PAR EA is also "around 10,000 lumens" according to ETC's published photometrics. They're probably using the worst case PARnel values for comparison.

As for PAR vs Profile efficiency, the optical path of a PAR is more efficient than that of an ERS, independent of the light source. Fewer lenses and less stray light means more of the usable light is coming out of the lens and not being converted to heat in the body of the fixture. Adding to that, the geometry of light sources is different, with the HPL being much closer to a point light source than the S4WRD which improves the usable light making it through the aperture for an HPL ERS.

Somewhere in the mix is the way the light is being measured, which can also influence the results.

 

[STEVETERRY]

Announcement video from Jim Uphoff.

Same light engine as before but new PAR/PARnel fixture bodies to support them. Important to note that these are not retrofits. You won't be using S4WRD on your existing PARs anytime soon.

I would be interested in the technical explanation how the same light engine in a PAR is brighter than a 750W/115X HPL but darker than that same HPL in a profile, which is what it seems like is the case.

The original PAR and PARnel reflector was somewhat de-tuned to limit thermal energy absorbed by the color media. The new S4WRD PAR body has an optimized reflector with a new prescription that is more efficient than the original. This is made possible by the lower thermal energy of the S4WRD LED source.

ST

 

[MNicolai]

So @STEVETERRY, for those of us who don't need that extra punch and maybe need to drive our stage lights off of a car battery, when can we anticipate the 115W, 75W, and the obligatory 77v derivatives each in 2700K, 3200K, and 5600K?